<?xml version='1.0' encoding='UTF-8'?><?xml-stylesheet href="http://www.blogger.com/styles/atom.css" type="text/css"?><feed xmlns='http://www.w3.org/2005/Atom' xmlns:openSearch='http://a9.com/-/spec/opensearchrss/1.0/' xmlns:georss='http://www.georss.org/georss' xmlns:gd='http://schemas.google.com/g/2005' xmlns:thr='http://purl.org/syndication/thread/1.0'><id>tag:blogger.com,1999:blog-22297760</id><updated>2011-04-21T16:11:42.036-07:00</updated><title type='text'>Sport - Alimentazione</title><subtitle type='html'>L'allenamento - Fisiologia dei muscoli - Fonti di energia - Psicologia - Metodi e tabelle d'allenamento ed altro...</subtitle><link rel='http://schemas.google.com/g/2005#feed' type='application/atom+xml' href='http://omarmagazinesport.blogspot.com/feeds/posts/default'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/22297760/posts/default?max-results=100'/><link rel='alternate' type='text/html' href='http://omarmagazinesport.blogspot.com/'/><link rel='hub' href='http://pubsubhubbub.appspot.com/'/><author><name>Omar</name><uri>http://www.blogger.com/profile/00706607423468173707</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='32' height='24' src='http://4.bp.blogspot.com/_jgm8E7gW3QY/SvFNV2vhhQI/AAAAAAAABck/uHSQBKPWnfo/S220/io+duna+45.jpg'/></author><generator version='7.00' uri='http://www.blogger.com'>Blogger</generator><openSearch:totalResults>6</openSearch:totalResults><openSearch:startIndex>1</openSearch:startIndex><openSearch:itemsPerPage>100</openSearch:itemsPerPage><entry><id>tag:blogger.com,1999:blog-22297760.post-113966232564021620</id><published>2006-02-12T04:48:00.000-08:00</published><updated>2006-02-15T03:27:29.786-08:00</updated><title type='text'>SPORT - Il libro - parte 1. (Da premessa a Dizionario delle fonti di energia e loro utilizzo)</title><content type='html'>&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;span style="font-family:Verdana;font-size:100%;"&gt;&lt;/span&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:100%;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;span style="color:#ffcc80;"&gt;&lt;/span&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4269.0.jpg"&gt;&lt;img style="DISPLAY: block; MARGIN: 0px auto 10px; CURSOR: hand; TEXT-ALIGN: center" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4269.jpg" border="0" /&gt;&lt;/a&gt;&lt;span style="font-size:130%;color:#000099;"&gt;&lt;strong&gt; PREMESSA:&lt;/strong&gt;&lt;/span&gt;&lt;br /&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4269.jpg"&gt;&lt;/a&gt;&lt;br /&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;L’allenamento è costituito da una serie di stimoli, ognuno dei quali è in grado di alterare temporaneamente l’equilibrio in cui si trova l’organismo.&lt;br /&gt;L’organismo, a sua volta, fornisce una risposta immediata,modulata in rapporto allo stimolo, che tende a ripristinare temporaneamente una nuova situazione di equilibrio.&lt;br /&gt;&lt;br /&gt;Se gli stimoli che alterano temporaneamente l’equilibrio vengono riproposti con una certa periodicità, l’effetto temporaneo si trasforma progressivamente in effetto duraturo che tende a persistere per tempi più lunghi ed a decedere molto più lentamente anche in assenza di minori stimoli.&lt;br /&gt;&lt;br /&gt;La ripetizione degli stimoli ha, cioè, comportato un adattamento dell’organismo ad un livello superiore di prestazione di quello di partenza.&lt;/span&gt; &lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;br /&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;* * * &lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;br /&gt;&lt;br /&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;br /&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#990000;"&gt;&lt;strong&gt;&lt;span style="font-family:verdana;font-size:130%;color:#cc0000;"&gt;SISTEMA CARDIOCICOLATORIO&lt;/span&gt;&lt;/strong&gt;&lt;br /&gt;&lt;/span&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;&lt;strong&gt;&lt;span style="color:#000099;"&gt;S&lt;/span&gt;&lt;span style="color:#000099;"&gt;OGLIA MASSIMA DEL RITMO CARDIACO&lt;/span&gt;&lt;/strong&gt;: senza strumenti si può calcolare così: &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;&lt;strong&gt;&lt;span style="color:#cc0000;"&gt;220 – l’età&lt;/span&gt;&lt;/strong&gt; (es.: un individuo di &lt;span style="color:#cc0000;"&gt;&lt;strong&gt;30 anni = 220 – 30 = 190&lt;/strong&gt;&lt;/span&gt; &lt;strong&gt;Soglia Massima&lt;/strong&gt; (&lt;strong&gt;SM&lt;/strong&gt;).&lt;br /&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;span style="color:#000099;"&gt;&lt;strong&gt;VELOCITA’&lt;/strong&gt; &lt;strong&gt;DI DEFLESSIONE&lt;/strong&gt;&lt;/span&gt;: velocità massima e mantenibile per poco tempo, poiché l’ossigeno&lt;br /&gt;che viene introdotto nell’organismo non è sufficiente al lavoro dei&lt;br /&gt;muscoli, per cui si accumula acido lattico.&lt;br /&gt;&lt;br /&gt;&lt;span style="color:#000099;"&gt;&lt;strong&gt;RITMO ALLENANTE&lt;/strong&gt;&lt;/span&gt;: si ottiene tenendo il ritmo cardiaco tra il &lt;strong&gt;&lt;span style="color:#cc0000;"&gt;75% e l’ 85%&lt;/span&gt;&lt;/strong&gt; della soglia&lt;br /&gt;(resistenza aerobica) massima per periodi di tempo programmati (fig. I )&lt;br /&gt;&lt;span style="font-size:78%;"&gt;&lt;em&gt;(fonte: American College of Sports Medicine – ACSM)&lt;/em&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;em&gt;&lt;span style="font-family:Verdana;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/em&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;em&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/em&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;em&gt;&lt;span style="font-family:Verdana;font-size:100%;"&gt;&lt;/span&gt;&lt;/em&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;em&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/em&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:verdana;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:verdana;"&gt;&lt;strong&gt;N. B.:&lt;/strong&gt; per migliorare significativamente le qualità aerobiche, è utile che nei muscoli venga&lt;br /&gt;utilizzata una piccola quantità di acido lattico.&lt;br /&gt;Questo si ottiene avvicinandosi per periodi medio - lunghi all’ 85% della SM, o per&lt;br /&gt;periodi brevi (da &lt;strong&gt;30 secondi&lt;/strong&gt; – &lt;span style="color:#cc0000;"&gt;&lt;strong&gt;interval training&lt;/strong&gt;&lt;/span&gt;- fino a &lt;strong&gt;4, 5 minuti&lt;/strong&gt; – &lt;span style="color:#cc0000;"&gt;&lt;strong&gt;frazionati lunghi&lt;/strong&gt;&lt;/span&gt;)&lt;br /&gt;superando l’ &lt;strong&gt;85%&lt;/strong&gt; della SM (accumulando comunque debito d’ossigeno). &lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:verdana;"&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;em&gt;Ogni atleta ha una velocità, o sforzo fisico, in cui non si produce acido lattico, una&lt;br /&gt;in cui se ne produce una limitata quantità che è subito riutilizzata ed una in cui si&lt;br /&gt;produce acido lattico fino all’affaticamento (velocità di deflessione – fig. xxv - &lt;/em&gt;&lt;em&gt;&lt;strong&gt;test Conconi&lt;/strong&gt;).&lt;br /&gt;&lt;/em&gt;&lt;/span&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;br /&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;Per elevare il più possibile la &lt;strong&gt;velocità di deflessine&lt;/strong&gt; occorre scegliere velocità e/o intensità dello sforzo d’allenamento, che si discostino di poco da essa per un elevato numero di sedute.&lt;br /&gt;Inoltre è indispensabile usare anche altri metodi, primo fra i quali quello che facilita l’utilizzo degli acidi grassi da parte dei muscoli.&lt;br /&gt;Questo si ottiene allenandosi a basse intensità di sforzo (basse velocità) per periodi lunghi (&lt;strong&gt;RESISTENZA AEROBICA&lt;/strong&gt;).&lt;/span&gt; &lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4270.0.jpg"&gt;&lt;/a&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;&lt;/div&gt;&lt;/span&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4270.jpg"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; CURSOR: hand" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4270.jpg" border="0" /&gt;&lt;/a&gt;&lt;/span&gt;&lt;/div&gt;&lt;div 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style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="center"&gt;* * *&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#ffcc80;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-size:130%;color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-size:130%;color:#000099;"&gt;EFFETTI DI TRAINING SUL:&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-size:130%;color:#ffcc80;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-size:130%;color:#000099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:arial;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#330099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#330099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#330099;"&gt;SISTEMA MUSCOLARE:&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;la forza di un muscolo è direttamente proporzionale alla sua superficie di sezione trasversale, quindi, quanto più il muscolo aumenta di volume tanto più aumenta la forza.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#330099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#330099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#330099;"&gt;SISTEMA CARDIO CIRCOLATORIO: &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;l’allenamento determina l’aumento del volume e del peso del cuore, oltre all’ampiezza delle cavità, con conseguente aumento delle quantitàdi sangue immesso in circolazione ad ogni pulsazione. La conseguenza è la &lt;strong&gt;diminuizione&lt;/strong&gt; delle pulsazioni nell’ individuo allenato, sia sotto sforzo che a riposo. &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;span style="color:#330099;"&gt;SISTEMA RESPIRATORIO:&lt;/span&gt; &lt;/span&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;&lt;br /&gt;&lt;/span&gt;&lt;span style="font-family:verdana;"&gt;&lt;span style="color:#000000;"&gt;aumento dell’elasticità toracica. Diminuizione della frequenza respiratoria. Elevazione dello scambio gassoso. Migliore utilizzo dell’ossigeno. &lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:verdana;"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-size:78%;"&gt;(fonte: “CORRERE” – Arcelli)&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;span style="font-family:verdana;"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-size:78%;"&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style="color:#330099;"&gt;SALUTE:&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;un allenamento costante e corretto producono benefici sullo stato di salute generale. Soprattutto quello cardiovascolare o aerobico, che è strettamente correlato alla capacità del sistema cardiovascolare di trasportare ossigeno nell’organismo e quindi all’aumento del &lt;strong&gt;&lt;span style="color:#3333ff;"&gt;massimo consumo d’ossigeno (VO2max)&lt;/span&gt;&lt;/strong&gt;, determinando un cuore più forte ed efficiente, con relativa diminuizione del rischio di malattie cardiovascolari.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#330099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#330099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#330099;"&gt;CONTROLLO DELPESO CORPOREO:&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;se ci si allena per dimagrire è da tener presente quanto segue: quando si bruciano calorie, il corpo utilizza i &lt;strong&gt;grassi &lt;/strong&gt;(&lt;strong&gt;&lt;em&gt;lipidi&lt;/em&gt;&lt;/strong&gt;) ed i &lt;strong&gt;carboidrati &lt;/strong&gt;(&lt;strong&gt;&lt;em&gt;zuccheri&lt;/em&gt;&lt;/strong&gt;) come fonti principali d’energia.&lt;br /&gt;La quantità di grassi nel totale del calcolo del consumo calorico varia tra il &lt;strong&gt;10%&lt;/strong&gt; e il &lt;strong&gt;60%.&lt;/strong&gt; La parte rimanente (&lt;strong&gt;40%&lt;/strong&gt; ÷ &lt;strong&gt;10%&lt;/strong&gt;) è costituita per lo più da carboidrati. Più bassa è la &lt;strong&gt;&lt;span style="color:#cc0000;"&gt;frequenza cardiaca&lt;/span&gt;&lt;/strong&gt;, maggiore sarà la percentuale di grassi sul totale delle calorie bruciate. Se, quindi, l’obiettivo è quello del controllo del peso, ci si deve allenare rimanendo nella parte di fascia allenante con i limiti inferiori, o anche con una frequenza cardiaca più bassa, calcolata attorno al &lt;strong&gt;65%&lt;/strong&gt; ÷ &lt;strong&gt;70%&lt;/strong&gt; della soglia massima (vedi fig. I, pag. 2) – esempio per un individuo di 30 anni:&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#ffcc80;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Verdana;color:#ff0000;"&gt;&lt;strong&gt;220 - 30 = 190 x 65% = 124&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Verdana;font-size:78%;color:#ffcc80;"&gt;&lt;strong&gt;.&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;color:#cc0000;"&gt;__________&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;color:#663333;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-size:78%;color:#000000;"&gt;(fonte: “AEROBIC FITNES NORMS FOR MALES END FAMELES AGED 6 TO 75 YEARS” )&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:78%;"&gt;* * *&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:100%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:100%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:100%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:100%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:verdana;font-size:130%;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:verdana;font-size:130%;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:100%;color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:100%;color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:100%;color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:100%;color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#000099;"&gt;&lt;strong&gt;POTENZIAMENTO GENERALE ARTI INFERIORI&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;ul&gt;&lt;li&gt;&lt;span style="font-family:Verdana;color:#000000;"&gt;Corsa su terreno collinare&lt;/span&gt;&lt;/li&gt;&lt;li&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;Circuit training in palestra&lt;/span&gt;&lt;/li&gt;&lt;li&gt;&lt;span style="font-family:verdana;"&gt;&lt;span style="font-size:100%;color:#000000;"&gt;Esercizi neuro muscolari a carico naturale ( skip, salti, balzi e controbalzi)&lt;/span&gt;&lt;/span&gt;&lt;/li&gt;&lt;li&gt;&lt;span style="font-family:verdana;"&gt;&lt;span style="font-size:100%;color:#000000;"&gt;Lavoro specifico con attrezzi &lt;/span&gt;&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;&lt;p&gt;&lt;span style="font-family:Verdana;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/p&gt;&lt;p align="center"&gt;&lt;span style="font-family:Verdana;font-size:100%;"&gt;&lt;/span&gt;&lt;/p&gt;&lt;p align="center"&gt;&lt;span style="font-family:Verdana;font-size:100%;"&gt;* * *&lt;/span&gt; &lt;/p&gt;&lt;p align="center"&gt;&lt;span style="color:#ffcc80;"&gt;..&lt;/span&gt;&lt;/p&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#330099;"&gt;&lt;strong&gt;MECCANISMO ENERGETICO DEI MUSCOLI&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#330099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#330099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#330099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#330099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#330099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;color:#330099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;Il meccanismo energetico della &lt;strong&gt;contrazione muscolare&lt;/strong&gt; è il seguente: la scissione di una molecola ad alto potere energetico (&lt;strong&gt;ATP&lt;/strong&gt;) in un’altra a più basso potere (&lt;strong&gt;ADP&lt;/strong&gt;), provoca la liberazione d’energia utilizzabile per l’esercizio. La &lt;strong&gt;resintesi&lt;/strong&gt; dei legami energetici (da ADP a ATP) avviene in prevalenza a spese dei &lt;strong&gt;carboidrati&lt;/strong&gt; e, cioè, del &lt;strong&gt;glucosio&lt;/strong&gt;. Acidi grassi e proteine vengono utilizzati principalmente durante sforzi di intensità superiore ai 60 secondi.&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:verdana;font-size:78%;"&gt;&lt;span style="color:#000000;"&gt;(fonte: “SPORT E MEDICINA” mag-giu 1994)&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;color:#330099;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#330099;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#330099;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#330099;"&gt;&lt;strong&gt;I MUSCOLI, IL TESSUTO MUSCOLARE, LA CONTRAZIONE MUSCOLARE&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#330099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#330099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#330099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#330099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;color:#330099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#000000;"&gt;&lt;em&gt;&lt;/em&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;em&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;span style="font-family:verdana;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/em&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;em&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;span style="font-family:verdana;"&gt;Premessa&lt;/span&gt;: nozioni.&lt;/strong&gt;&lt;/span&gt;&lt;/em&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;em&gt;&lt;span style="font-family:Verdana;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/em&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;em&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/em&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;em&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/em&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;em&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/em&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;em&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/em&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;em&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/em&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#cc0000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#cc0000;"&gt;NEURONI:&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#cc0000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;unità elementare del funzionamento cerebrale. Ce ne sono circa &lt;strong&gt;30 miliardi&lt;/strong&gt; alla nascita e non si rinnovano. Ogni neurone è costituito da un corpo cellulare, da una o più dendriti e da un solo cilindrasse. Questi due elementi formano le fibre nervose. In ogni fibra circola una mini corrente elettrica, l’impulso nervoso. I neuroni non si toccano tra loro, giunto all’estremità di un primo neurone, l’impulso nervoso si trova di fronte ad uno spazio che non riesce a superare: tale spazio e detto &lt;strong&gt;sinapsi&lt;/strong&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#cc0000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#cc0000;"&gt;&lt;strong&gt;NEUROTRASMETTITORI:&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#cc0000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#cc0000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#cc0000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;sostanze chimiche che permettono di superare le sinapsi e di comunicare tra neuroni. L’arrivo dell’impulso nervoso a livello sinaptico provoca il riversamento di questi neurotrasmettitori nello spazio sinaptico. I neurotrasmettitori vengono quindi captati dall’elemento post – sinaptico (secondo neurone), il che genera un nuovo impulso nervoso. Tutto il funzionamento cerebrale interno si riduce a questa trasformazione &lt;strong&gt;elettro – chimico – elettrico&lt;/strong&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#cc0000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#cc0000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#cc0000;"&gt;&lt;strong&gt;MUSCOLO:&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#cc0000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#cc0000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;il muscolo, che è all’origine dei movimenti, è un tessuto contrattile di varia costituzione (&lt;strong&gt;liscio&lt;/strong&gt;, &lt;strong&gt;striato&lt;/strong&gt;, &lt;strong&gt;cardiaco&lt;/strong&gt;). La contrazione del muscolo è il risultato di un complesso processo di reazioni chimiche.&lt;br /&gt;I &lt;strong&gt;muscoli striati&lt;/strong&gt;, che fanno muovere lo scheletro, dipendono dalla volontà sotto l’azione del sistema nervoso: un impulso nervoso proveniente dal cervello, o dal midollo spinale, provoca la liberazione di una sostanza chimica, l’acetilcolina, che è all’origine di una contrazione.&lt;br /&gt;Quando si contraggono i muscoli consumano energia e liberano acqua, anidride carbonica e &lt;strong&gt;acido lattico&lt;/strong&gt;. Dopo un grande sforzo quest’ultimo si accumula, provocando una sensazione dolorosa, crampi, indolenzimento.&lt;br /&gt;La sezione sagittale di un muscolo mostra che è simile ad un cavo. Può essere definito una fascia di fili, ognuno dei quali è costituito da fili più piccoli, detti &lt;strong&gt;miofibrille&lt;/strong&gt; che sono filamenti di proteine: l’&lt;strong&gt;actina&lt;/strong&gt; e la &lt;strong&gt;miosina&lt;/strong&gt;. I muscoli striati sono di due tipi: a &lt;strong&gt;contrazione rapida&lt;/strong&gt; e a &lt;strong&gt;contrazione lenta&lt;/strong&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;em&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/em&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#cc0000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#cc0000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#cc0000;"&gt;&lt;strong&gt;TESSUTO MUSCOLARE:&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#cc0000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;il tessuto muscolare è fondamentalmente di tre tipi: liscio, striato, miocardio. Il tessuto muscolare, processo di trasformazione e di sintesi delle &lt;strong&gt;proteine&lt;/strong&gt;, è organizzato in filamenti fino a costituire le &lt;strong&gt;miofibrille&lt;/strong&gt; che raggiungono il loro numero definitivo poco dopo la nascita. In seguito l’aumento volumetrico dei muscoli avviene per ipertrofia delle fibre causata da &lt;strong&gt;stimoli funzionali&lt;/strong&gt;. Le fibre muscolari sono infatti elementi perenni, non sostituibili, ma in grado di rigenerare alcune parti.&lt;br /&gt;Le fibre muscolari costituenti il &lt;strong&gt;&lt;em&gt;tessuto striato&lt;/em&gt;&lt;/strong&gt; sono plasmodi cilindrici che possono raggiungere i 200 µm. di diametro e talvolta i 20 cm. di lunghezza. Oltre che alle striature trasversali, hanno una filettatura longitudinale che testimonia la suddivisione in tante miofibrille parallele. Le fibre striate, infatti, risultano costituite da una membrana esterna avvolgente (sarcolemma) in cui, oltre alle miofibrille, sono contenuti numerosi nuclei e una certa quantità di citoplasma indifferenziato, il &lt;strong&gt;&lt;em&gt;sarcoplasma&lt;/em&gt;&lt;/strong&gt; che tramite il &lt;strong&gt;&lt;em&gt;sarcolemma&lt;/em&gt;&lt;/strong&gt; contrae rapporti con le fibre nervose della placca motrice.&lt;br /&gt;Il tessuto muscolare striato è sottoposto al controllo della volontà. (Il cuore, tessuto muscolare striato, ha caratteristiche particolari; vedi miocardio).&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#cc0000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#cc0000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#cc0000;"&gt;&lt;strong&gt;RECETTORI MUSCOLARI:&lt;/strong&gt;&lt;/span&gt; &lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;sono formazioni diverse che rappresentano il punto di partenza di eccitazioni destinate ad alimentare &lt;strong&gt;azioni riflesse&lt;/strong&gt;, o eventi dolorosi. Sono distribuiti nel muscolo, nei tendini, nelle capsule articolari e se ne distinguono quattro diversi tipi:&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000099;"&gt;&lt;strong&gt;1. FUSI MUSCOLARI:&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;molto importanti nella regolazione della contrazione muscolare, sono costituiti da esili fibre che nella porzione mediana sono circondate dalla terminazione di una fibra sensoriale, avvolta a spirale e da una capsula fusiforme. Quando il muscolo è &lt;strong&gt;stirato&lt;/strong&gt;, il fuso muscolare viene stimolato e la fibra che ne diparte eccita i neuroni motori del muscolo (d’altro canto i fusi muscolari partecipano alla contrazione muscolare adeguando la loro lunghezza a quella delle altre fibre).&lt;br /&gt;I fusi muscolari svolgono anche una specie di funzione che potremmo definire di &lt;strong&gt;memoria motoria&lt;/strong&gt;, funzionando come chips di un computer, memorizzando il grado di contrazione del muscolo, appunto adeguando la loro lunghezza. Inviano il loro segnale ai centri nervosi responsabili delle attività motorie e ne contorcevano ulteriori informazioni che vengono a loro volta memorizzate, questo soprattutto per i movimenti più complessi. (E’ importante comprendere come nello sviluppo dell’età vi sia sempre più una saturazione delle “memorie”, ecco perché alcuni gesti tecno – atletici è fondamentale che vengano appresi in età precoce, attorno ai 5, 6 anni).&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#000099;"&gt;&lt;strong&gt;2. ORGANI TENDINEI DEI GOLGI:&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;terminazioni sensitive specializzate che avvolgono le estremità delle fibre muscolari, dove queste trapassano nel tendine. Vengono stimolati quando il muscolo si tende e quando si contrae ed inibiscono i centri motori del muscolo proteggendolo dai sovraccarichi.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#000099;"&gt;&lt;strong&gt;3. CORPUSCOLI DEL PACINI:&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;formazioni microscopiche costituite da lamine fibrose. Sono presenti nelle guaine dei muscoli nei tendini, nelle capsule articolari e sono sensibili alle deformazioni meccaniche (pressioni, spostamenti, gravità). &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#000099;"&gt;&lt;strong&gt;4. TERMINAZIONI LIBERE:&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;stanno prevalentemente presso i vasi sanguigni e sono recettori dolorifici.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#cc0000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#cc0000;"&gt;&lt;strong&gt;CONTRAZIONE MUSCOLARE:&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#cc0000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;color:#cc0000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;la contrazione muscolare consiste in un accorciamento del muscolo secondo un asse determinato, con un contemporaneo aumento di spessore senza variazione del volume ed è legata alla struttura anisotropa propria dei tessuti contrattili. I muscoli sono infatti dotati, in una certa direzione e secondo un certo asse, di una consistenza diversa da quella che presentano in altre direzioni. La contrazione muscolare presenta alcuni fenomeni: &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#000099;"&gt;&lt;strong&gt;1. FENOMENI MECCANICI:&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;la contrazione muscolare è determinata dall’impulso nervoso che perviene ai muscoli dai centri nervosi mediante i nervi motori. Un muscolo, eccitato direttamente o indirettamente, può accorciarsi se una delle sue estremità è libera ed una è fissa (&lt;strong&gt;contrazione isotonica&lt;/strong&gt;) o cambiare di tensione se entrambe le estremità sono fisse (&lt;strong&gt;contrazione isometrica&lt;/strong&gt;).&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#000099;"&gt;&lt;strong&gt;2. FENOMENI ELETTRICI:&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;il muscolo che entra in attività è sede di manifestazioni elettriche dette “correnti di azione”.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#000099;"&gt;&lt;strong&gt;3.FENOMENI TERMICI:&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;tutte le contrazioni muscolari sono accompagnate da una liberazione di calore.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;span style="color:#000099;"&gt;&lt;strong&gt;4. FENOMENI CHIMICI&lt;/strong&gt;:&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;Alla base della contrazione muscolare stanno reazioni chimiche esotermiche che forniscono l’energia necessaria alla contrazione stessa. Questa comprende &lt;strong&gt;due fasi&lt;/strong&gt;:&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#3333ff;"&gt;&lt;strong&gt;4.1. FASE ANAEROBIA (O ANAEROBICA):&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;che si effettua in assenza di ossigeno ed in cui l’&lt;strong&gt;ATP&lt;/strong&gt; (acido AdenosinTriPhosforico), costituente muscolare, si decompone bruscamente, fornendo l’energia chimica che si trasforma direttamente in energia meccanica responsabile dell’accorciamento delle fibre muscolari.&lt;br /&gt;Il &lt;strong&gt;glicogeno&lt;/strong&gt;, altro costituente muscolare, usufruendo dell’acido fosforico liberato dall’&lt;strong&gt;ATP&lt;/strong&gt; (che si scinde in &lt;strong&gt;ADP&lt;/strong&gt; – acido AdesinDiPhosforico e acido fosforico) subisce una serie di trasformazioni (reazioni di &lt;strong&gt;fosforilazione&lt;/strong&gt;) da cui deriva l’acido piruvico e da questi, infine, l’acido lattico. Contemporaneamente si verificano reazioni di sintesi che conducono alla ricostruzione dell’ATP. &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#3333ff;"&gt;&lt;strong&gt;4.2. FASE AEROBIA (O AEROBICA):&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;in cui l’&lt;strong&gt;ossigeno&lt;/strong&gt; è necessario per eliminare un quinto dell’&lt;strong&gt;acido lattico&lt;/strong&gt; formatosi in precedenza. Questa reazione di ossidazione è esotermica e fornisce l’energia necessaria per la resintesi del &lt;strong&gt;glicogeno&lt;/strong&gt; dai quattro quinti di acido lattico residuo.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000099;"&gt;&lt;strong&gt;5. FENOMENI MOLECOLARI&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;i componenti più importanti delle fibrille muscolari sono due proteine: la &lt;strong&gt;miosina&lt;/strong&gt; e la &lt;strong&gt;actina&lt;/strong&gt;, i cui filamenti sono disposti in fasci sei intorno ad ogni filamento di miosina; il processo di contrazione, scatenato dall’impulso nervoso, comporta l’intervento di diversi sistemi &lt;strong&gt;enzimatici&lt;/strong&gt; e consiste essenzialmente nello scorrimento dei filamenti di miosina fra quelli di actina.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#cc0000;"&gt;&lt;strong&gt;CONTRAZIONE STATICA:&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#cc0000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#cc0000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;color:#cc0000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;è una contrazione sostenuta senza lavoro in senso meccanico, come ad esempio per sostenere un peso. Il &lt;strong&gt;tono muscolare&lt;/strong&gt; è quindi lo stato di tensione di un muscolo a riposo.La &lt;strong&gt;contrazione tonica&lt;/strong&gt; è lo stato di contrazione perdurante nel tempo, mentre quella clonica consiste in una successione ritmica di contrazioni involontarie, riflesse ed irregolari, conseguenti alla brusca distensione di un muscolo.&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:verdana;font-size:78%;color:#000000;"&gt;(fonte: enciclopedia RIZZOLI LAROUSSE)&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;* * *&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;color:#000000;"&gt;DEDUZIONE&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;em&gt;&lt;span style="font-family:verdana;"&gt;Dalle sopraesposte informazioni, possiamo fare una deduzione che, togliendo molto del romanticismo relativo ai concetti di “atleta” e “allenamento”, riconduce la materia ad un dato poco poetico, ma estremamente chiaro: l’&lt;strong&gt;azione&lt;/strong&gt; risponde a trasformazioni &lt;strong&gt;elettro&lt;/strong&gt; – &lt;strong&gt;chimico&lt;/strong&gt; – &lt;strong&gt;elettriche&lt;/strong&gt; a livello cerebrale e a livello muscolare. Il muscolo, poi, è un laboratorio chimico dove si genera, si accumula e si consuma energia.&lt;br /&gt;L’&lt;strong&gt;allenamento&lt;/strong&gt; deve avere la funzione di dare maggiore efficienza all’impulso nervoso e maggiore capacità ai muscoli di produrre e consumare energia. &lt;/span&gt;&lt;/em&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;em&gt;&lt;span style="font-family:Verdana;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/em&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;em&gt;&lt;span style="font-family:Verdana;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/em&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;em&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/em&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;em&gt;&lt;span style="font-family:Verdana;"&gt;* * *&lt;/span&gt;&lt;/em&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;em&gt;&lt;span style="font-family:Verdana;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/em&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;em&gt;&lt;span style="font-family:Verdana;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/em&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;em&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/em&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;em&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/em&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;em&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/em&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;em&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/em&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;em&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/em&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#330099;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#330099;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#330099;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#330099;"&gt;&lt;strong&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/muscoli.figura.0.jpg"&gt;&lt;/a&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;strong&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/muscoli.figura.1.jpg"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; CURSOR: hand" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/muscoli.figura.0.jpg" border="0" /&gt;&lt;/a&gt;fig. II &lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;"&gt;Muscoli scheletrici&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;..&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span 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style="font-family:verdana;font-size:130%;color:#330099;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#330099;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#330099;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#330099;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#330099;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#330099;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#330099;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#330099;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#330099;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#330099;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#330099;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#330099;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#330099;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#330099;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#330099;"&gt;&lt;strong&gt;ANCORA SUI MUSCOLI&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#330099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#330099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#330099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#330099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;Il muscolo scheletrico, anche a riposo, è in uno stato di semi contrazione che si chiama &lt;strong&gt;tono muscolare&lt;/strong&gt;.&lt;br /&gt;I muscoli sono organizzati in &lt;strong&gt;paia antagoniste&lt;/strong&gt; (ad esempio bicipite e tricipite del braccio), quando uno si contrae, l’altro si rilassa. Questo si ottiene grazie ad un’innervazione reciproca dei due muscoli, in modo che quando uno si contrae stimolato da un neurone di moto, contemporaneamente un segnale nervoso inibitorio agisce sui neuroni di moto del muscolo antagonista, impedendogli la contrazione. Grazie a questo meccanismo i movimenti risultano coordinati.&lt;br /&gt;I muscoli scheletrici sono costituiti da lunghe fibre che sono &lt;strong&gt;cellule polinucleate&lt;/strong&gt;. Il loro citoplasma contiene da alcune centinaia ad alcune migliaia di fibre ancora più piccole (Ø 1 ÷ 2 µm.), dette &lt;strong&gt;miofibrille&lt;/strong&gt; disposte parallelamente all’asse maggiore della fibra. Ciascuna miofiblilla è formata dall’alternarsi di bande chiare (I) e bande scure (A), dovute alla regolare distribuzione di filamenti all’interno della miofibrilla. E’ una differenza con una precisa corrispondenza chimica, essendo le due bande costituite da due diverse proteine.&lt;br /&gt;La &lt;strong&gt;banda A&lt;/strong&gt; è fatta di grossi filamenti (12 ÷ 18 µm.), comprendenti ognuno circa 200 molecole di miosina disposte nel senso della lunghezza del filamento.&lt;br /&gt;La &lt;strong&gt;banda I&lt;/strong&gt; è formata invece da filamenti più sottili (5 ÷ 8 µm.) di &lt;strong&gt;actina&lt;/strong&gt;, molecola costituita da due catene avvolte ad elica, disposte parallelamente all’asse della fibra. L’unità contrattile del muscolo che comprende questa fascia è chiamata &lt;strong&gt;sarcomero&lt;/strong&gt; (fig. II). Quando il muscolo è rilassato i filamenti di actina e di miosina appaiono tra loro separati. Quando i filamenti di actina slittano sopra quelli di miosina si ha la contrazione. La contrazione è dunque il risultato di una interreazione tra le due diverse proteine che viene resa possibile dall’energia fornita dall’&lt;strong&gt;ATP&lt;/strong&gt; e dal glicogeno, presenti in quantità notevoli nel muscolo stesso.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;em&gt;&lt;span style="font-family:Verdana;"&gt;&lt;/span&gt;&lt;/em&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;"&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/miofibrilla.jpg"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; CURSOR: hand" alt="" src="http://photos1.blogger.com/blogger/1986/1520/320/miofibrilla.jpg" border="0" /&gt;&lt;/a&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:100%;"&gt;fig. III&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:100%;"&gt;Sarcomero&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;"&gt;(fonte: “FONDAMENTI DI BIOLOGIA" L. Alberghina)&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Times New Roman;font-size:100%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:100%;"&gt;* * *&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:100%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:100%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:100%;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:100%;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:100%;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:100%;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;p&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/p&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:verdana;"&gt;&lt;span style="font-size:130%;color:#000099;"&gt;IL RUOLO DELL’ATP&lt;/span&gt; (acido Adenosintrifosfato) &lt;/span&gt;&lt;/strong&gt;&lt;span style="font-family:verdana;font-size:130%;color:#000099;"&gt;&lt;strong&gt;NELLA CONTRAZIONE&lt;br /&gt;MUSCOLARE, FONTI ENERGETICHE DEL MUSCOLO E&lt;br /&gt;DEBITO D’OSSIGENO&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#000099;"&gt;_____&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;span style="font-family:times new roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;span style="color:#000000;"&gt;Le proteine contrattili rappresentano il macchinario del sistema contrattile (muscolatura scheletrica); esso utilizza la scissione dell’&lt;strong&gt;ATP&lt;/strong&gt; per ricavare l’energia necessaria alla produzione di lavoro meccanico.&lt;br /&gt;La miosina che idrolizza&lt;strong&gt; ATP&lt;/strong&gt; ad &lt;strong&gt;ADP&lt;/strong&gt; + &lt;strong&gt;fosfato&lt;/strong&gt; (Pi), viene stimolata nella reazione dal legame con l’actina. L’energia di legame dell’ATP così liberata viene utilizzata per consentire lo &lt;strong&gt;scorrimento della miosina sui filamenti di actina&lt;/strong&gt;. All’esatto funzionamento di questo sistema contrattile partecipano gli &lt;strong&gt;ioni calcio&lt;/strong&gt; (Ca²+) che favoriscono o inibiscono, a seconda della concentrazione, la formazione dei &lt;strong&gt;ponti &lt;/strong&gt;fra miosina ed actina e quindi la contrazione, o il rilassamento del muscolo.&lt;br /&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;Il funzionamento del muscolo è strettamente connesso alla sua disponibilità d’energia e quindi di ATP. Se questo viene a mancare il muscolo si affatica e cessa la sua attività.&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;span style="font-family:times new roman;"&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;span style="color:#000000;"&gt;Ma l’ATP è presente nel muscolo in &lt;strong&gt;piccole quantità&lt;/strong&gt;, appena sufficienti per &lt;strong&gt;otto&lt;/strong&gt; contrazioni.&lt;br /&gt;Poiché le contrazioni sono molte più di otto, è necessario che l’ATP, man mano che viene scisso, &lt;strong&gt;sia ripristinato&lt;/strong&gt; sfruttano altre fonti d’energia, a seconda dell’intensità dello sforzo fisico.&lt;br /&gt;La prima rapida richiesta viene soddisfatta dalla &lt;strong&gt;creatina fosfato&lt;/strong&gt; (CP + ADP = C + ATP) che assicura circa &lt;strong&gt;100 contrazioni&lt;/strong&gt;.&lt;br /&gt;Quando la CP non è più sufficiente, interviene il metabolismo degli acidi grassi, che fornisce l’ATP necessario attraverso la &lt;strong&gt;fosforilazione ossidativa&lt;/strong&gt;.&lt;br /&gt;Se lo sforzo si prolunga ulteriormente vengono intaccate le riserve di &lt;strong&gt;&lt;span style="color:#000099;"&gt;glicogeno&lt;/span&gt;&lt;/strong&gt; immagazzinate nei muscoli. Questo può fornire energia per &lt;strong&gt;10.000 ÷ 20.000 contrazioni&lt;/strong&gt;.&lt;br /&gt;Il glicogeno viene dapprima trasformato in &lt;strong&gt;&lt;span style="color:#000099;"&gt;glucosio&lt;/span&gt;&lt;/strong&gt; e poi, attraverso la &lt;strong&gt;&lt;span style="color:#000099;"&gt;glicolisi&lt;/span&gt;&lt;/strong&gt; e la fermentazione, in &lt;strong&gt;&lt;span style="color:#000099;"&gt;acido piruvico&lt;/span&gt;&lt;/strong&gt; e quindi in &lt;strong&gt;&lt;span style="color:#cc0000;"&gt;acido lattico&lt;/span&gt;&lt;/strong&gt;.&lt;br /&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;Ultimate anche queste risorse il muscolo entra in crisi: non vi è più l’equilibrio fra ATP prodotto e ATP consumato e &lt;strong&gt;l’accumulo di acido lattico&lt;/strong&gt; fa subentrare il fenomeno &lt;strong&gt;della fatica&lt;/strong&gt;, costringendo a porre fine all’attività muscolare.&lt;br /&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;Buona parte dell’acido lattico, circa i &lt;strong&gt;quattro quinti&lt;/strong&gt;, viene rimossa ed inviata al &lt;strong&gt;&lt;span style="color:#000099;"&gt;fegato&lt;/span&gt;&lt;/strong&gt;, dove verrà trasformata nuovamente in glicogeno (&lt;strong&gt;&lt;span style="color:#000099;"&gt;gliconeogenesi&lt;/span&gt;&lt;/strong&gt;). L’energia necessaria a ciò viene fornita &lt;strong&gt;dall’ossidazione dell’acido&lt;/strong&gt; lattico rimanente e cioè un quinto circa.&lt;br /&gt;L’intero processo contrattile si realizza in assenza di ossigeno (&lt;strong&gt;&lt;span style="color:#000099;"&gt;fase anaerobica&lt;/span&gt;&lt;/strong&gt;), ad eccezione dell’ossidazione di &lt;strong&gt;1/5&lt;/strong&gt; di acido lattico, necessaria per il ripristino delle scorte di &lt;strong&gt;creatina&lt;/strong&gt; e di &lt;strong&gt;glicogeno&lt;/strong&gt; consumate (&lt;strong&gt;&lt;span style="color:#000099;"&gt;fase aerobica&lt;/span&gt;&lt;/strong&gt;). Questa fase che avviene con l’intervento dell’&lt;strong&gt;&lt;span style="color:#cc0000;"&gt;ossigeno &lt;/span&gt;&lt;/strong&gt;provoca un “&lt;strong&gt;&lt;span style="color:#000099;"&gt;debito d’ossigeno&lt;/span&gt;&lt;/strong&gt;”, evidenziato dal fatto che, nonostante si sospenda l’attività muscolare, la ventilazione polmonare rimane ancora accelerata (nella fase attiva fino a &lt;strong&gt;5 volte&lt;/strong&gt; maggiore che a riposo); il respiro è più profondo e più frequente per un certo periodo che corrisponde a quello necessario per soddisfare il debito d’ossigeno contratto. &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;Il massimo debito d’ossigeno che l’organismo può contrarre è di circa 8 litri e dipende dalla massa muscolare interessata e dall’entità dello sforzo.&lt;/span&gt; &lt;span style="color:#000099;"&gt;Infatti lo sforzo fisico può essere protratto fino ad un limite massimo cui corrisponde il massimo debito d’ossigeno.&lt;br /&gt;&lt;/span&gt;&lt;span style="color:#000000;"&gt;Il fatto limitante che impedisce l’ulteriore protrarsi dell’attività muscolare è l’impossibilità di un congruo apporto d’ossigeno ai muscoli rispetto al debito d’ossigeno che l’organismo contrae: le reazioni &lt;strong&gt;anaerobiche&lt;/strong&gt; di scissione dell’ATP sono più rapide di quelle &lt;strong&gt;aerobiche&lt;/strong&gt; di sintesi e così si contrae il debito d’ossigeno.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000000;"&gt;* * *&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;Abbiamo visto come il ripristino delle riserve energetiche avvenga completamente in fase&lt;strong&gt;&lt;span style="color:#000000;"&gt; aerobica&lt;/span&gt;&lt;/strong&gt;. C’è da aggiungere che al termine dello sforzo muscolare, con riposo assoluto o attivo, durante la fase di recupero, il fabbisogno di ATP cala notevolmente, mentre non cessa il fabbisogno di ossigeno che si mantiene elevato per colmare il “debito” e ripercorrere in senso inverso i processi &lt;/span&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;lattacidi&lt;/strong&gt;.&lt;br /&gt;&lt;/span&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;span style="color:#000000;"&gt;Poiché la produzione di ATP attraverso il processo &lt;strong&gt;anaerobico&lt;/strong&gt; può verificarsi &lt;strong&gt;senza &lt;/strong&gt;formazione di acido lattico (sistema ATP – PC), o &lt;strong&gt;con &lt;/strong&gt;formazione di acido lattico (&lt;strong&gt;glicolisi&lt;/strong&gt;), anche il recupero del debito d’ossigeno prende il nome di&lt;/span&gt; &lt;span style="color:#000099;"&gt;&lt;strong&gt;alattacido&lt;/strong&gt;&lt;/span&gt;&lt;span style="color:#000000;"&gt; o&lt;/span&gt; &lt;span style="color:#000099;"&gt;&lt;strong&gt;lattacido&lt;/strong&gt;&lt;/span&gt;.&lt;br /&gt;&lt;span style="color:#000000;"&gt;La parte &lt;strong&gt;alattacida&lt;/strong&gt; è quella che viene pagata più rapidamente: in genere, anche di fronte ad uno sforzo intenso, entro i &lt;strong&gt;tre minuti&lt;/strong&gt; successivi al cessare dello sforzo stesso il ripristino di PC a livello muscolare dovrebbe essere già completo.&lt;br /&gt;Invece il debito d’ossigeno &lt;strong&gt;lattacido&lt;/strong&gt; viene pagato in un tempo notevolmente superiore, &lt;strong&gt;circa 45 minuti&lt;/strong&gt;, in quanto è necessario che l’acido lattico compia il ciclo di resintesi attraverso la &lt;strong&gt;fase aerobica&lt;/strong&gt;, così come abbiamo visto nei paragrafi precedenti.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;-------------------------------------------------------------------------------------------------&lt;br /&gt;&lt;/span&gt;&lt;span style="font-family:arial;"&gt;&lt;span style="color:#000000;"&gt;Il pagamento del debito d’ossigeno, sia alattacido che lattacido, è anche detto&lt;/span&gt; &lt;strong&gt;&lt;span style="color:#000000;"&gt;recupero&lt;/span&gt;&lt;/strong&gt;. &lt;span style="color:#000000;"&gt;Questo non avviene in modo lineare, ma segue una &lt;strong&gt;&lt;span style="color:#000000;"&gt;curva discendente&lt;/span&gt;&lt;/strong&gt; che inizia in modo ripido per diventare sempre più dolce.&lt;br /&gt;&lt;/span&gt;&lt;span style="color:#000000;"&gt;Nel &lt;/span&gt;&lt;strong&gt;&lt;span style="color:#000099;"&gt;debito alattacido&lt;/span&gt;&lt;/strong&gt; &lt;span style="color:#000000;"&gt;entro i&lt;/span&gt;&lt;strong&gt;&lt;span style="color:#cc0000;"&gt; primi 30 secondi&lt;/span&gt;&lt;/strong&gt; &lt;span style="color:#000000;"&gt;ne è già stato pagato&lt;/span&gt; &lt;strong&gt;&lt;span style="color:#000000;"&gt;la metà&lt;/span&gt;&lt;/strong&gt; &lt;span style="color:#000000;"&gt;ed in&lt;/span&gt; &lt;strong&gt;&lt;span style="color:#cc0000;"&gt;un minuto&lt;/span&gt;&lt;/strong&gt; &lt;span style="color:#000000;"&gt;i&lt;/span&gt; &lt;strong&gt;&lt;span style="color:#000000;"&gt;3 quarti&lt;/span&gt;&lt;/strong&gt; &lt;span style="color:#000000;"&gt;; per quello &lt;/span&gt;&lt;strong&gt;&lt;span style="color:#000099;"&gt;lattacido&lt;/span&gt;&lt;/strong&gt;&lt;span style="color:#000000;"&gt;, invece, per pagare la&lt;/span&gt; &lt;strong&gt;&lt;span style="color:#000000;"&gt;metà del debito&lt;/span&gt;&lt;/strong&gt; &lt;span style="color:#000000;"&gt;occorrono circa&lt;/span&gt; &lt;strong&gt;&lt;span style="color:#cc0000;"&gt;15 minuti&lt;/span&gt;&lt;/strong&gt; &lt;span style="color:#000000;"&gt;e per i&lt;/span&gt;&lt;span style="color:#000000;"&gt; &lt;strong&gt;3 quarti&lt;/strong&gt;&lt;/span&gt; &lt;span style="color:#000000;"&gt;circa&lt;/span&gt; &lt;span style="color:#cc0000;"&gt;&lt;strong&gt;30 minuti&lt;/strong&gt;&lt;/span&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;color:#000000;"&gt;-------------------------------------------------------------------------------------------------------&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;Inoltre per la completa ristabilizzazione occorre che siano ricostruite tutte le riserve di &lt;strong&gt;glicogeno&lt;/strong&gt; nel &lt;strong&gt;fegato&lt;/strong&gt; e nei &lt;strong&gt;muscoli&lt;/strong&gt;, che sia ristabilito l’equilibrio &lt;strong&gt;idro – salinico&lt;/strong&gt; e che si siano ricostruite tutte quelle sostanze, anche di natura plastica, che possono essere state deteriorate da uno sforzo intenso e prolungato. Per questi motivi il tempo occorrente per una completa ristabilizzazione può variare da una prestazione sportiva e l’altra: &lt;strong&gt;alcuni minuti per i salti ed i lanci&lt;/strong&gt;; &lt;span style="color:#000099;"&gt;alcune ore per le corse di velocità prolungata&lt;/span&gt;; &lt;span style="color:#993399;"&gt;uno o più giorni per le partite di calcio, rugby, pallacanestro&lt;/span&gt;, &lt;span style="color:#993399;"&gt;gare di fondo podistiche o di sci, ciclismo e simili&lt;/span&gt;; &lt;span style="color:#cc0000;"&gt;più settimane per gare come la maratona o incontri di pugilato professionistico&lt;/span&gt;.&lt;br /&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;Uno degli accorgimenti che l’organismo mette in atto per far fronte alle maggiori richieste d’ossigeno, è un aumento della &lt;strong&gt;quantità di sangue&lt;/strong&gt; che circola nei muscoli interessati, questo attraverso una &lt;strong&gt;dilatazione dei vasi capillari&lt;/strong&gt; degli stessi muscoli, a scapito di altri organi dove avviene contemporaneamente vasocostrizione (soprattutto organi viscerali). Il flusso circolatorio può così aumentare da &lt;strong&gt;40 a 100 volte&lt;/strong&gt;. Aumenta inoltre, la concentrazione della parte corpuscolata del sangue: nuovi &lt;strong&gt;&lt;span style="color:#cc0000;"&gt;globuli rossi&lt;/span&gt;&lt;/strong&gt; vengono messi in circolo dalla contrazione di organi come la &lt;strong&gt;&lt;span style="color:#cc0000;"&gt;milza &lt;/span&gt;&lt;/strong&gt;che ne costituiscono un deposito (&lt;strong&gt;60% - 65%&lt;/strong&gt; di elementi corpuscolari, contro il &lt;strong&gt;40%&lt;/strong&gt; del normale sangue circolante).&lt;br /&gt;Durante la contrazione muscolare aumenta anche la&lt;strong&gt; temperatura&lt;/strong&gt; corporea. Questa è una conseguenza del fatto che solo il 20% dell’energia chimica fornita ai muscoli si trasforma in energia meccanica, il rimanente 80% si trasforma in calore. Questo è utile all’organismo perché &lt;strong&gt;una temperatura più ele&lt;/strong&gt;vata comporta un &lt;strong&gt;&lt;span style="color:#000099;"&gt;aumento della velocità&lt;/span&gt;&lt;/strong&gt; con cui avvengono le reazioni a livello dei tessuti e &lt;strong&gt;viene favorita&lt;/strong&gt; la cessione ad essi dell’&lt;strong&gt;&lt;span style="color:#cc0000;"&gt;ossigeno&lt;/span&gt;&lt;/strong&gt; da parte del sangue attraverso una diminuizione d’affinità dell’&lt;strong&gt;&lt;span style="color:#cc0000;"&gt;emoglobina&lt;/span&gt;&lt;/strong&gt; con l’ossigeno.&lt;/span&gt;&lt;/div&gt;&lt;span style="color:#000000;"&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;span style="font-family:arial;"&gt;Riassumendo: l’energia per il lavoro muscolare è fornita dalla scissione dell’ATP e il meccanismo della contrazione è regolato dagli ioni Calcio (Ca²+). &lt;/span&gt;(fig.IV)&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;div align="justify"&gt;&lt;span style="font-family:arial;font-size:78%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:arial;font-size:78%;color:#000000;"&gt;&lt;strong&gt;fig.IV. Ciclo dell'ATP nel muscolo&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4286.jpg"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; CURSOR: hand" alt="" src="http://photos1.blogger.com/blogger/1986/1520/320/DSCN4286.jpg" border="0" /&gt;&lt;/a&gt;&lt;/span&gt;&lt;/div&gt;&lt;/span&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;NOTA:&lt;/strong&gt; &lt;/span&gt;&lt;span style="font-family:verdana;"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-size:78%;"&gt;dal punto di vista energetico, la &lt;strong&gt;fermentazione&lt;/strong&gt; del glucosio (fase anaerobica) utilizza solo in piccola parte l’energia liberata dallo zucchero, in quanto porta alla produzione di solo &lt;strong&gt;due molecole&lt;/strong&gt; di ATP per ogni molecola di glucosio utilizzata, mentre nella fase aerobica l’ossidazione di ogni molecola di glucosio fornisce &lt;strong&gt;38 molecole&lt;/strong&gt; di ATP (&lt;strong&gt;36 se per glicolisi&lt;/strong&gt;).&lt;br /&gt;Inoltre è da tener presente che l’ossidazione degli acidi grassi (lipidi) produce circa &lt;strong&gt;sei volte&lt;/strong&gt; più ATP di quanto non si ottenga con l’ossidazione degli zuccheri.&lt;/span&gt; &lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;color:#000000;"&gt;(fonte: “FONDAMENTI DI BIOLOGIA" L. Alberghina)&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Verdana;color:#000000;"&gt;&lt;strong&gt;Leggenda:&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;-----------------------------------------------------------------------------&lt;br /&gt;A = actina Pi = fosfato NAD = nicotamide-adenindinucleotide&lt;br /&gt;M = miosina C = creatina PC = fosfocreatina&lt;br /&gt;M* = miosina attiva H+ = ioni idrogeno AcCoA = acetilcolina&lt;br /&gt;Ca²+ = ioni calcio K+ = ioni potassio LDH = latticodeidrogenesi&lt;br /&gt;Na++ = ioni sodio NaCl = sodio cloruro &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;------------------------------------------------------------------------------&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:arial;font-size:78%;color:#000000;"&gt;(&lt;/span&gt;&lt;span style="font-family:arial;font-size:78%;color:#000000;"&gt;fonte: “FONDAMENTI DI BIOLOGIA" L. Alberghina)&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;strong&gt;fig. V. Schema semplificato dell’utilizzo delle fonti d’energia nei muscoli&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4287.0.jpg"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;img style="FLOAT: right; MARGIN: 0px 0px 10px 10px; CURSOR: hand" alt="" src="http://photos1.blogger.com/blogger/1986/1520/320/DSCN4287.0.jpg" border="0" /&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/a&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;color:#ffcc80;"&gt;&lt;strong&gt;.&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;N.B.:&lt;/strong&gt; la presenza di &lt;strong&gt;glicogeno&lt;/strong&gt; nei muscoli è inversamente proporzionale alla presenza di &lt;strong&gt;acido lattico&lt;/strong&gt; (più acido lattico, meno glicogeno).&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:100%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:100%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:lucida grande;font-size:130%;"&gt;* * *&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:100%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:100%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:100%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:100%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:100%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;p&gt;&lt;/span&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/p&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#000099;"&gt;&lt;strong&gt;DIZIONARIO DELLE FONTI DI ENERGIA E DEL LORO UTILIZZO&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#000099;"&gt;_________________&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;strong&gt;ADP&lt;/strong&gt; (&lt;span style="color:#000099;"&gt;acido adenosindifosforico&lt;/span&gt;):&lt;br /&gt;sostanza presente nei tessuti viventi dove funge da trasportatore dell’ &lt;span style="color:#000099;"&gt;acido fosforico&lt;/span&gt;. Utilizzato nel &lt;span style="color:#000099;"&gt;metabolismo&lt;/span&gt;, ad esempio, degli &lt;span style="color:#000099;"&gt;zuccheri&lt;/span&gt;. Costituito da adenina, ribosio, e un residuo di pirofosforico.&lt;br /&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;strong&gt;ATP&lt;/strong&gt; (&lt;span style="color:#000099;"&gt;acido adenosintrifosfrico&lt;/span&gt;):&lt;br /&gt;composto formato da adenite, ribosio e &lt;span style="color:#000099;"&gt;tre molecole di acido fosforico&lt;/span&gt;. E’ una sostanza fondamentale per lo svolgimento delle funzioni vitali, in quanto la sua scissione in &lt;strong&gt;ADP&lt;/strong&gt; e &lt;strong&gt;fosforo inorganico&lt;/strong&gt; libera una notevole quantità di &lt;strong&gt;energia&lt;/strong&gt;, calcolabile in circa &lt;strong&gt;&lt;span style="color:#cc0000;"&gt;9.000 calorie&lt;/span&gt;&lt;/strong&gt; per mole. L’ATP si forma nelle cellule a spese dell’energia derivante dai processi di degradazione delle sostanze organiche e può essere considerato un trasportatore ed una riserva di energia chimica che la cellula può utilizzare per le sue molteplici attività.&lt;br /&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;strong&gt;ACIDO FOSFORICO&lt;/strong&gt;:&lt;br /&gt;composti fosforici presenti in vari modi nei tessuti viventi (ortofosforico, ecc. – fosforo).&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;strong&gt;ACIDO LATTICO&lt;/strong&gt;:&lt;br /&gt;presente in natura nei tessuti animali e vegetali, deriva dalla riduzione dell’ &lt;span style="color:#000099;"&gt;&lt;strong&gt;acido piruvico&lt;/strong&gt;&lt;/span&gt;, prodotto molto importante del metabolismo sia dei &lt;span style="color:#000099;"&gt;glucidi&lt;/span&gt;, dei &lt;span style="color:#000099;"&gt;protidi&lt;/span&gt; che dei &lt;span style="color:#000099;"&gt;lipidi&lt;/span&gt;. Il suo tasso abituale nel sangue umano è intorno ai &lt;strong&gt;&lt;span style="color:#000000;"&gt;10 ÷ 20 mg&lt;/span&gt;&lt;/strong&gt;. per cm³, ma può salire fino a &lt;strong&gt;200 mg&lt;/strong&gt;. durante violenti sforzi muscolari in condizioni di &lt;strong&gt;carenza&lt;/strong&gt; d’ossigeno, anche relativa, come accade durante un intenso sforzo muscolare, questo composto chiave &lt;strong&gt;sostituisce&lt;/strong&gt; l’&lt;span style="color:#000099;"&gt;ossigeno&lt;/span&gt;, legando l’idrogeno prodotto da reazioni liberatrici d’energia e permettendo il regolare proseguimento di queste. Durante tale reazione l’acido piruvico si trasforma in &lt;strong&gt;&lt;span style="color:#000099;"&gt;acido lattico&lt;/span&gt;&lt;/strong&gt;, il quale si accumula nel sangue e che verrà riossidato ad acido piruvico al termine dello sforzo (tramite il legame tra ossigeno e i &lt;strong&gt;4/5&lt;/strong&gt; di acido lattico presente). In tali condizioni si dice che i muscoli hanno contratto un &lt;strong&gt;&lt;span style="color:#000099;"&gt;debito d’ossigeno&lt;/span&gt;&lt;/strong&gt; che viene saldato al termine della situazione d’emergenza.&lt;br /&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;strong&gt;ACIDO PIRUVICO&lt;/strong&gt;:&lt;br /&gt;è molto diffuso nei tessuti animali in quanto è un importante intermedio del metabolismo dei &lt;span style="color:#000099;"&gt;carboidrati&lt;/span&gt;; può provenire dalla metabolizzazione del &lt;span style="color:#000099;"&gt;&lt;strong&gt;glucosio&lt;/strong&gt;&lt;/span&gt;, o dal &lt;span style="color:#000099;"&gt;&lt;strong&gt;glicogeno&lt;/strong&gt;&lt;/span&gt; attraverso la &lt;span style="color:#000099;"&gt;&lt;strong&gt;glicolisi&lt;/strong&gt;&lt;/span&gt;; nel muscolo la sua riduzione porta alla formazione di acido lattico. Inoltre costituisce un punto di contatto con il &lt;strong&gt;metabolismo&lt;/strong&gt; delle &lt;span style="color:#000099;"&gt;&lt;strong&gt;proteine&lt;/strong&gt;&lt;/span&gt;.&lt;br /&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;strong&gt;CARBOIDRATO&lt;/strong&gt;:&lt;br /&gt;semiacetale o semichetale poliossidrilato, o sostanza che può fornirli per idrolisi. Un carboidrato può essere &lt;strong&gt;monosaccaride&lt;/strong&gt;, &lt;strong&gt;disaccaride&lt;/strong&gt; o &lt;strong&gt;polisaccaride&lt;/strong&gt;. I primi sono distinti in aldosi e chetosi. I secondi possono, o no, &lt;/span&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;mantenere la funzione carbolinica ed a ciò è legato il loro potere riducente. Fra i polisaccaridi, che sono veri polimeri, citiamo l’&lt;span style="color:#000099;"&gt;amido&lt;/span&gt;, la &lt;span style="color:#000099;"&gt;cellulosa&lt;/span&gt;, l’&lt;span style="color:#000099;"&gt;inulina&lt;/span&gt;. Una classe particolare è quella dei &lt;span style="color:#000099;"&gt;glucosidi&lt;/span&gt;, i quali per &lt;strong&gt;idrolisi&lt;/strong&gt; danno due molecole di glucosio e una di cianidrica.&lt;br /&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;strong&gt;FOSFOCREATINA&lt;/strong&gt; (o creatinfosfato):&lt;br /&gt;composto isolato dal tessuto muscolare di &lt;strong&gt;fondamentale&lt;/strong&gt; importanza per la &lt;span style="color:#cc0000;"&gt;&lt;strong&gt;contrazione&lt;/strong&gt;&lt;/span&gt;. Il ruolo essenziale sostenuto dalla fosfocreatina è dato da: &lt;strong&gt;F + ADP &lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4287.1.jpg"&gt;&lt;img style="CURSOR: hand" height="17" alt="" src="http://photos1.blogger.com/blogger/1986/1520/200/DSCN4287.jpg" width="41" border="0" /&gt;&lt;/a&gt; creatina + ATP&lt;/strong&gt;. &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;La reazione è catalizzata da una tranfosforilasi che agisce in presenza di &lt;strong&gt;&lt;span style="color:#000099;"&gt;ioni magnesio&lt;/span&gt;&lt;/strong&gt;. In pratica la fosfocreatina rende possibile la &lt;strong&gt;resintesi &lt;/strong&gt;dell’ATP.&lt;br /&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;strong&gt;FOSFORILAZIONE&lt;/strong&gt;:&lt;br /&gt;reazione di addizione di &lt;span style="color:#000099;"&gt;acido fosforico&lt;/span&gt; da parte di un composto organico con eliminazione di acqua. Riveste notevole importanza biologica in quanto molte sostanze (ad esempio gli zuccheri) sono assimilabili solo se sono stati fosforilati.&lt;br /&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;strong&gt;GLICOGENESI&lt;/strong&gt;:&lt;br /&gt;polimerazione del &lt;span style="color:#000099;"&gt;&lt;strong&gt;glucosio&lt;/strong&gt;&lt;/span&gt; in &lt;span style="color:#000099;"&gt;&lt;strong&gt;glicogeno&lt;/strong&gt;&lt;/span&gt; verificatesi nel &lt;span style="color:#000099;"&gt;fegato&lt;/span&gt; e nei &lt;span style="color:#000099;"&gt;muscoli&lt;/span&gt;. Processo completo che implica una serie di reazioni:&lt;br /&gt;1) il &lt;strong&gt;glucosio&lt;/strong&gt;, in presenza di &lt;strong&gt;ATP &lt;/strong&gt;e per azione di un enzima, si lega in posizione 6 ad una molecola di &lt;strong&gt;acido fosforico&lt;/strong&gt;, trasformandosi in &lt;strong&gt;glucosio-6-fosfato&lt;/strong&gt;;&lt;br /&gt;2) nel &lt;strong&gt;glucosio-6-fosfato&lt;/strong&gt;, per azione di un altro enzima, avviene uno spostamento del gruppo fosforico dalla posizione 6 alla posizione 1, per cui si forma &lt;strong&gt;glucosio-1-fosfato&lt;/strong&gt; (estere di Cori);&lt;br /&gt;3) questo in presenza di un altro enzima polimerizza finalmente a &lt;strong&gt;glicogeno&lt;/strong&gt;.&lt;br /&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;strong&gt;GLICOGENO&lt;/strong&gt;:&lt;br /&gt;polisaccaride di riserva dei tessuti animali ad alto peso molecolare che, per idrolisi, fornisce &lt;span style="color:#000099;"&gt;glucosio&lt;/span&gt;. Il &lt;span style="color:#000099;"&gt;glicogeno &lt;/span&gt;costituisce la tipica riserva di &lt;span style="color:#000099;"&gt;zuccheri&lt;/span&gt; dell’organismo animale. È presente soprattutto nel &lt;span style="color:#000099;"&gt;fegato&lt;/span&gt;, nei &lt;span style="color:#000099;"&gt;muscoli&lt;/span&gt; e nel &lt;span style="color:#000099;"&gt;rene&lt;/span&gt;. Sottoposto a idrolisi acida o enzimatica, si scinde in &lt;span style="color:#000099;"&gt;&lt;strong&gt;maltosio&lt;/strong&gt;&lt;/span&gt; e quindi in &lt;span style="color:#000099;"&gt;&lt;strong&gt;glucosio&lt;/strong&gt;&lt;/span&gt;. Questa scissione avviene nel fegato ogni volta che l’organismo richiede una immissione di glucosio nel sangue. Nel &lt;strong&gt;fegato &lt;/strong&gt;avviene la formazione del &lt;strong&gt;glicogeno&lt;/strong&gt; sia dal glucosio (&lt;span style="color:#cc0000;"&gt;&lt;strong&gt;glicogenesi&lt;/strong&gt;&lt;/span&gt;), sia da fonti non glucidiche (&lt;span style="color:#cc0000;"&gt;&lt;strong&gt;gliconeogenesi&lt;/strong&gt;&lt;/span&gt;).&lt;br /&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;strong&gt;GLICOLISI&lt;/strong&gt;:&lt;br /&gt;degradazione enzimatica dei glucidi. Conversione anaerobica del glucosio fino a &lt;span style="color:#000099;"&gt;&lt;strong&gt;lattato&lt;/strong&gt;&lt;/span&gt; che avviene principalmente nel muscolo. La glicolisi è nel muscolo in stretta connessione con la &lt;strong&gt;contrazione&lt;/strong&gt;, in quanto è accertato che il tasso di glicogeno in questo tessuto &lt;strong&gt;diminuisce&lt;/strong&gt; in condizioni di lavoro, mentre parallelamente cresce il contenuto di &lt;strong&gt;acido lattico&lt;/strong&gt;. La glicolisi consta di molte reazioni di &lt;strong&gt;fosforilazione&lt;/strong&gt; alle quali partecipano l’ATP e il &lt;strong&gt;DPN&lt;/strong&gt; (coenzima di idrogeno). I composti intermedi più importanti sono il &lt;strong&gt;glucosio-6-fosfato&lt;/strong&gt;, lo fosfogliceraldeide, l’acido ossalacetico e &lt;strong&gt;l’acido fosfopiruvico&lt;/strong&gt;. Attraverso la formazione di &lt;span style="color:#000099;"&gt;&lt;strong&gt;piruvato&lt;/strong&gt;&lt;/span&gt;, ciascuna molecola di glucosio da, alla fine della reazione, &lt;strong&gt;due molecole di lattato&lt;/strong&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;strong&gt;GLICONEOGENESI:&lt;br /&gt;&lt;/strong&gt;sintesi del &lt;strong&gt;glicogeno&lt;/strong&gt; da metabolici protidici, lipidici, o da &lt;strong&gt;acido lattico&lt;/strong&gt; che si verifica nel fegato.&lt;br /&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;strong&gt;GLUCOSIO&lt;/strong&gt;:&lt;br /&gt;&lt;strong&gt;monosaccaride&lt;/strong&gt;; composto organico più diffuso in natura. Per la parte che ci interessa (biochimica), il glucosio è uno dei più importanti &lt;span style="color:#cc0000;"&gt;&lt;strong&gt;carboidrati&lt;/strong&gt;&lt;/span&gt; della dieta, costituisce la forma di trasporto degli idrati di carbonio mediante la quale questi vengono utilizzati. Pertanto il &lt;strong&gt;&lt;span style="color:#000099;"&gt;glucosio &lt;/span&gt;&lt;/strong&gt;è sempre presente nel sangue, di cui è un costituente essenziale e la sua concentrazione (&lt;strong&gt;glicemia&lt;/strong&gt;) è costante in condizioni fisiologiche.&lt;br /&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;strong&gt;GLUCIDE&lt;/strong&gt;:&lt;br /&gt;il &lt;strong&gt;metabolismo glucidico&lt;/strong&gt; consta di una serie complessa di degradazione e di sintesi. Le prime rappresentano una delle maggiori &lt;strong&gt;fonti di energia&lt;/strong&gt; per gli organismi viventi e possono esplicarsi sia in &lt;span style="color:#000099;"&gt;&lt;strong&gt;anaerobiosi&lt;/strong&gt;&lt;/span&gt;, sia in &lt;span style="color:#000099;"&gt;&lt;strong&gt;aerobiosi&lt;/strong&gt;&lt;/span&gt;. In entrambi i casi l’energia chimica che si libera durante la &lt;strong&gt;degradazione&lt;/strong&gt;, viene in parte trasformata in calore ed in parte immagazzinata in legami ad alto valore energetico, principalmente nell’&lt;strong&gt;&lt;span style="color:#000099;"&gt;ATP&lt;/span&gt;&lt;/strong&gt;. Il glucide che più frequentemente si riscontra nel sangue e nei tessuti animali è il &lt;span style="color:#000099;"&gt;glucosio&lt;/span&gt;, che può essere stato ingerito direttamente, o che può provenire dalla scissione di disaccaridi e/o polisaccaridi. Il glucosio assorbito a livello &lt;strong&gt;dell’intestino tenue&lt;/strong&gt;, segue la corrente sanguigna che lo trasporta nei luoghi di utilizzo o di deposito. Quest’ultimo si effettua per &lt;strong&gt;glicogenesi&lt;/strong&gt;. L’utilizzo segue vie diverse a seconda che avvenga nel muscolo per produrre lavoro, o a livello cellulare (nutrizione). Nel muscolo si ha un catabolismo anaerobico che si svolge secondo le tappe della glicolisi. Il metabolismo dei glucidi diversi dal glucosio (&lt;span style="color:#000099;"&gt;fruttosio e lattosio&lt;/span&gt;) comporta la loro trasformazione in uno dei prodotti intermedi del catabolismo del glucosio, dopo di che ha lo stesso funzionamento.&lt;br /&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;strong&gt;LIPIDE&lt;/strong&gt; (lipidico):&lt;br /&gt;il significato &lt;strong&gt;metabolico dei lipidi&lt;/strong&gt; è diverso da quello dei &lt;span style="color:#000099;"&gt;glucidi&lt;/span&gt;: infatti, mentre questi rappresentano il combustibile biologico per eccellenza, i lipidi sono il &lt;strong&gt;&lt;span style="color:#cc0000;"&gt;combustibile biologico di riserva&lt;/span&gt;&lt;/strong&gt; e vengono sottratti ai depositi naturali (tessuto adiposo) solo in caso di prolungato digiuno, di malattie (diabete) e per &lt;strong&gt;prolungati sforzi fisici&lt;/strong&gt;. Tuttavia i lipidi hanno in genere un metabolismo molto attivo e vengono di continuo depositati e mobilizzati. I grassi sono di estrema importanza nella dieta, in quanto apportano gli &lt;strong&gt;acidi grassi essenziali&lt;/strong&gt; che non possono essere fabbricati dall’organismo (acidi linoleico, linoleinico e arachidonico) e rappresentano, inoltre, il veicolo delle&lt;strong&gt; vitamine liposolubili&lt;/strong&gt; (A, D, E, K). I lipidi alimentari vengono scissi (lipolisi) nell’intestino per giungere per via linfatica ed ematica al tessuto adiposo e al &lt;span style="color:#000099;"&gt;&lt;strong&gt;fegato&lt;/strong&gt;&lt;/span&gt;. Questo svolge un ruolo importante nel metabolismo lipidico: qui avviene la scissione dei lipidi in &lt;strong&gt;glicerolo&lt;/strong&gt; e &lt;strong&gt;acido grasso&lt;/strong&gt;. Mentre il primo segue il destino dei glucidi, l’acido grasso subisce una β-ossidazione che comporta la progressiva formazione di composti a due atomi di carbonio.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;strong&gt;PROTEINE&lt;/strong&gt; (protidico, proteico) &lt;/span&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;br /&gt;(Metabolismo protidico):&lt;br /&gt;delle proteine non approfondiremo le conoscenze, limitandoci ad alcuni cenni generali ed alla conoscenza della funzione energetica. Le &lt;span style="color:#000099;"&gt;&lt;strong&gt;proteine&lt;/strong&gt;&lt;/span&gt; sono il &lt;strong&gt;supporto architettonico dell’organismo&lt;/strong&gt;: pelle, ossa, muscoli, ecc., sono formati da lunghe catene di proteine (funzione plastica). Le proteine sono composte da 20 &lt;span style="color:#000099;"&gt;&lt;strong&gt;amminoacidi&lt;/strong&gt;&lt;/span&gt;, &lt;strong&gt;8&lt;/strong&gt; dei quali essenziali, cioè che l’organismo non riesce a produrre e che, quindi, debbono essere presenti nell’alimentazione. L’organismo, inoltre, non è capace di accumulare gli amminoacidi, per cui le proteine rappresentano una quota indispensabile nell’alimentazione giornaliera: &lt;strong&gt;il fabbisogno minimo è di &lt;span style="color:#cc0000;"&gt;1 g. per kg. di peso&lt;/span&gt; &lt;span style="color:#cc0000;"&gt;corporeo&lt;/span&gt; al giorno.&lt;br /&gt;&lt;/strong&gt;La funzione fondamentale degli amminoacidi è quella plastica, solo secondariamente, quelli non utilizzati nella funzione primaria, vengono utilizzati in funzione energetica. Per far si che ciò avvenga gli amminoacidi debbono perdere il gruppo amminico; si forma così un chetoacido che può essere convertito in glucosio o in acido grasso, oppure essere amminato per transamminazione per formare un nuovo amminoacido. Gli acidi α-chetoacido, α chetoglutarico, ossalacetico e piruvico sono punti di contatto importanti per il metabolismo protidico, in quanto consentono la perdita del gruppo amminico e, quindi, l’utilizzo degli amminoacidi in funzione energetica.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;* * *&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;strong&gt;MINERALI – VITAMINE&lt;/strong&gt;:&lt;br /&gt;qui non rientriamo nelle fonti d’energia, ma entrambi svolgono funzioni fondamentali per il metabolismo, per le attività motorie e funzioni di controllo enzimatico ed ormonale. Non approfondiremo l’argomento, ma ci limiteremo ad indicare i più indispensabili per le funzioni organiche:&lt;br /&gt;MINERALI: &lt;span style="color:#000099;"&gt;&lt;strong&gt;calcio, fosforo, ferro, iodio, magnesio, potassio, sodio&lt;/strong&gt;&lt;/span&gt;.&lt;br /&gt;VITAMINE: (liposolubili) &lt;span style="color:#000099;"&gt;&lt;strong&gt;A, D, E, K&lt;/strong&gt;&lt;/span&gt;. (Idrosolubili) gruppo &lt;span style="color:#000099;"&gt;&lt;strong&gt;B, C&lt;/strong&gt;&lt;/span&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;* * *&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;strong&gt;DEDUZIONE&lt;/strong&gt;:&lt;br /&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;strong&gt;ALLENARSI PER SFRUTTARE MEGLIO LE FONTI D’ENERGIA&lt;/strong&gt;:&lt;br /&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;Il nostro organismo può essere paragonato ad un perfetto &lt;strong&gt;laboratorio chimico&lt;/strong&gt; che produce, trasforma, immagazzina e consuma l’energia che serve a farci vivere, pensare, compiere azioni. Un laboratorio complesso e perfetto che è in grado di ampliare le proprie prestazioni se opportunamente allenato ed addestrato. Il raggiungimento della &lt;strong&gt;forma&lt;/strong&gt; in un atleta presuppone anche questa capacità di aumentare tali possibilità dell’organismo e che possiamo riassumere in pochi cenni schematici: abituare il fegato a produrre ed a immagazzinare più glicogeno; abituare i muscoli a immagazzinare più &lt;strong&gt;ATP&lt;/strong&gt; e più &lt;strong&gt;glicogeno&lt;/strong&gt;; abituare l’organismo a utilizzare anche &lt;strong&gt;lipidi&lt;/strong&gt; come carburante energetico, in quanto costituiscono la &lt;strong&gt;maggiore&lt;/strong&gt; riserva di energia; aumentare le capacità d’ossigenazione dei tessuti muscolari e dell’intero organismo in modo da utilizzare maggiormente la fase aerobica e quindi il riutilizzo dell’acido lattico (aumento delle capacità cardiocircolatorie e del sistema respiratorio).&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;* * * &lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;strong&gt;IMPORTANTE&lt;/strong&gt;:&lt;br /&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;strong&gt;1)&lt;/strong&gt; poiché la contrazione muscolare è dovuta ad un impulso nervoso cerebro-spinale verso e dal muscolo, la produzione di tali impulsi ed il loro trasporto (&lt;strong&gt;velocità e frequenza dei neuroni&lt;/strong&gt;) è fondamentale per compiere l’azione (condizione psicologica, capacità di concentrarsi, volontà);&lt;br /&gt;&lt;strong&gt;2)&lt;/strong&gt; poiché alla base del lavoro muscolare stanno reazioni esotermiche per fornire l’energia necessaria, è importante &lt;strong&gt;preriscaldare &lt;/strong&gt;i muscoli stessi per prepararli ad un lavoro più intenso;&lt;br /&gt;&lt;strong&gt;3)&lt;/strong&gt; poiché è importante recuperare i debiti d’ossigeno, occorre alla fine di ogni lavoro intenso (gare, allenamenti specifici) compiere un &lt;span style="color:#000099;"&gt;&lt;strong&gt;recupero aerobico&lt;/strong&gt;&lt;/span&gt; (&lt;strong&gt;defaticamento&lt;/strong&gt;) in modo da riossidare (e poter riutilizzare) l’acido lattico.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;em&gt;&lt;span style="font-family:Times New Roman;"&gt;continua in SPORT il libro parte 2...&lt;/span&gt;&lt;/em&gt;&lt;/div&gt;&lt;div class="blogger-post-footer"&gt;&lt;img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/22297760-113966232564021620?l=omarmagazinesport.blogspot.com' alt='' /&gt;&lt;/div&gt;</content><link rel='replies' type='application/atom+xml' href='http://omarmagazinesport.blogspot.com/feeds/113966232564021620/comments/default' title='Post Comments'/><link rel='replies' type='text/html' href='http://www.blogger.com/comment.g?blogID=22297760&amp;postID=113966232564021620' title='0 Comments'/><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/22297760/posts/default/113966232564021620'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/22297760/posts/default/113966232564021620'/><link rel='alternate' type='text/html' href='http://omarmagazinesport.blogspot.com/2006/02/sport-il-libro-parte-1-da-premessa.html' title='SPORT - Il libro - parte 1. (Da premessa a Dizionario delle fonti di energia e loro utilizzo)'/><author><name>Omar</name><uri>http://www.blogger.com/profile/00706607423468173707</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='32' height='24' src='http://4.bp.blogspot.com/_jgm8E7gW3QY/SvFNV2vhhQI/AAAAAAAABck/uHSQBKPWnfo/S220/io+duna+45.jpg'/></author><thr:total>0</thr:total></entry><entry><id>tag:blogger.com,1999:blog-22297760.post-113966378690236283</id><published>2006-02-11T05:08:00.000-08:00</published><updated>2006-02-11T05:16:27.213-08:00</updated><title type='text'>SPORT - Il Libro - parte 2. (Da Acido Lattico a La Resistenza Organica Anaerobica)</title><content type='html'>&lt;div align="center"&gt;&lt;span style="font-size:180%;color:#000099;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:78%;color:#ff9900;"&gt;&lt;strong&gt;.&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:180%;color:#cc0000;"&gt;&lt;strong&gt;ACIDO LATTICO&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-size:100%;color:#000099;"&gt;_________________&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;span style="color:#000099;"&gt;&lt;span style="font-size:130%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;br /&gt;&lt;strong&gt;&lt;span style="font-size:130%;color:#000099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;br /&gt;&lt;span style="color:#000099;"&gt;&lt;span style="font-size:130%;"&gt;&lt;strong&gt;COINVIVERE CON L’ACIDO LATTICO:&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;br /&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;span style="color:#000000;"&gt;Abbiamo visto come in presenza di sforzi intensi la contrazione muscolare conduca inesorabilmente alla produzione di acido lattico. Questo, che a prima vista può sembrare un danno per il tessuto muscolare (intossicazione, quindi dolore, affaticamento), può diventare, attraverso opportuni allenamenti, un’ulteriore riserva di energia utilizzabile dall’organismo.&lt;/span&gt; &lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;Infatti, contratto un &lt;strong&gt;&lt;span style="color:#000099;"&gt;debito d’ossigeno&lt;/span&gt;&lt;/strong&gt; che ha portato alla produzione di acido lattico, abituando l’organismo a saldare tale debito, si ha il risultato che in presenza d’ossigeno, un quinto dell’acido lattico presente viene ossidato per fornire l’energia necessaria per trasformare i rimanenti quattro quinti in acido piruvico (nel fegato per gliconeogenesi) senza che questo debba essere sintetizzato dal metabolismo dei carboidrati (cioè risparmiando &lt;strong&gt;glucosio&lt;/strong&gt; e &lt;strong&gt;glicogeno&lt;/strong&gt;). &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;Gli allenamenti, quindi, dovranno avere, in momenti ben precisi, la caratteristica di abituare l’organismo alla &lt;/span&gt;&lt;span style="color:#000000;"&gt;produzione ed al riutilizzo dell’ &lt;strong&gt;&lt;span style="color:#000099;"&gt;acido lattico&lt;/span&gt;&lt;/strong&gt;, con molta attenzione ai livelli di produzione, poiché un accumulo troppo elevato porterebbe ai fenomeni di intossicazione sopra citati. &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;In definitiva tutto questo serve ad aumentare la &lt;strong&gt;&lt;span style="color:#cc0000;"&gt;resistenza organica anaerobica&lt;/span&gt;&lt;/strong&gt;, cioè la capacità di sopportare quantità sempre maggiori di acido lattico, allontanando nello stesso tempo il punto di affaticamento che costringe alla sua produzione, aumentando la capacità di &lt;strong&gt;&lt;span style="color:#000099;"&gt;debito d’ossigeno&lt;/span&gt;&lt;/strong&gt; accumulabile. &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;Inoltre allenarsi a queste condizioni porta a favorire altri processi fondamentali per un atleta: la produzione di acido lattico avviene in prossimità della soglia massima del ritmo cardiaco, questo significa che la ripetizione programmata per periodi stabiliti di azioni che portano il ritmo cardiaco intorno a tale soglia massima, produce un aumento delle capacità cardiache con conseguente maggior flusso ematico verso i tessuti muscolari e una maggiore loro ossigenazione. Questo fa si che si innalzi il tetto di resistenza organica aerobica, con conseguenza di allontanare il punto in cui si contrae il debito d’ossigeno.&lt;br /&gt;&lt;br /&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;br /&gt;&lt;span style="color:#000099;"&gt;&lt;strong&gt;ACIDO LATTICO (lattato) – ACIDOSI LATTICA FISIOLOGICA:&lt;/strong&gt;&lt;/span&gt;&lt;br /&gt;&lt;br /&gt;come abbiamo visto l’esercizio fisico &lt;strong&gt;massimale&lt;/strong&gt; provoca &lt;strong&gt;&lt;span style="color:#000099;"&gt;acidosi lattica&lt;/span&gt;&lt;/strong&gt; fisiologica. Questo si sviluppa a livello delle attività &lt;strong&gt;glicolitica citoplasmatica&lt;/strong&gt; e &lt;strong&gt;ossidativa mitocondriale&lt;/strong&gt;. Il normale metabolismo dei tessuti produce circa 1400 mEq/die, ma l’equilibrio deve essere assicurato anche quando, a seguito di stress anaerobio muscolare (esercizio fisico massimale) i ritmi di produzione si incrementano fino a decine di volte i livelli basali.&lt;/span&gt;&lt;/div&gt;&lt;span style="color:#000000;"&gt;&lt;div align="justify"&gt;&lt;br /&gt;I livelli di lattato sono determinati dal ritmo di produzione del &lt;strong&gt;&lt;span style="color:#000099;"&gt;piruvato&lt;/span&gt;&lt;/strong&gt; (acido piruvico), dipendente a sua volta soprattutto dalla &lt;strong&gt;&lt;span style="color:#000099;"&gt;glicolisi&lt;/span&gt;&lt;/strong&gt; (quote minori derivano dalla tranaminazione dell’alanina nel muscolo e nell’intestino, o dalla glutamina nel rene). In condizioni fisiologiche il destino del piruvato è mitocondriale, attraverso una via degradativa, via &lt;strong&gt;AcCoA&lt;/strong&gt; ed inserimento nel ciclo dei &lt;strong&gt;TCA&lt;/strong&gt; e due vie sintetiche, di cui la prima, ancora attraverso l’&lt;strong&gt;AcCoA&lt;/strong&gt;, è indirizzata verso la sintesi di diversi composti (acidi grassi, corpi chetonici, colesterolo, ormoni steroidi, acetilcolina), l’altra, più rilevante in termini quantitativi, è alla base della prima tappa, mitocondriale, della gliconeogenesi.&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;Sia le &lt;strong&gt;glicolisi &lt;/strong&gt;che la funzione mitocondriale, trovano un fattore critico di regolazione nella disponibilità di ossigeno. Infatti di fronte ad un deficit di&lt;strong&gt;&lt;span style="color:#000099;"&gt; O2&lt;/span&gt;&lt;/strong&gt;, sia per difettoso apporto, o difettoso utilizzo, i livelli di piruvato e, quindi di lattato, aumentano [questa risposta dipende dagli effetti prodotti dal disturbo ipossico sul pool energetico (deplezione di &lt;strong&gt;&lt;span style="color:#000099;"&gt;ATP&lt;/span&gt;&lt;/strong&gt;) e sullo stato “redox” cellulare (aumento della quantità di &lt;strong&gt;NADH&lt;/strong&gt; e quindi del rapporto &lt;strong&gt;NADH/NAD&lt;/strong&gt;)].&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;Il &lt;strong&gt;&lt;span style="color:#000099;"&gt;lattato&lt;/span&gt;&lt;/strong&gt; possiede una cinetica complessa, basata sull’equilibrio tra organi prevalentemente produttori (cellule ematiche, muscolo scheletrico, cute, intestino, midollare renale) ed organi che in condizione basale lo sintetizzano (&lt;strong&gt;fegato&lt;/strong&gt; e &lt;strong&gt;rene&lt;/strong&gt;) attraverso meccanismi &lt;strong&gt;mitocondriali&lt;/strong&gt;. Tra questi una particolare rilevanza in termini quantitativi, è da attribuire alla gliconeogenesi. È infatti verso questa via che è indirizzata la maggior quota di piruvato, al fine della conservazione dei substrati energetici, secondo un meccanismo di recupero del glucosio (&lt;strong&gt;&lt;span style="color:#000099;"&gt;ciclo di Cori&lt;/span&gt;&lt;/strong&gt;) da destinare agli organi dove è substrato indispensabile (cervello, eritrociti).&lt;/div&gt;&lt;div align="justify"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;Nella fase fisiologica di recupero dell’acidosi lattica spontanea (lavoro anaerobico muscolare) assume rilevante importanza la piruvato-carbosillasi epatica, da cui prende inizio la via di smaltimento del lattato&lt;/span&gt; &lt;span style="color:#000000;"&gt;quantitativamente più rilevante.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;&lt;strong&gt;.&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;strong&gt;fig. VI - Ciclo di Cori&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4297.jpg"&gt;&lt;span style="color:#ffcc66;"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; CURSOR: hand" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4297.jpg" border="0" /&gt;&lt;/span&gt;&lt;/a&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc66;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc66;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc66;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc66;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:100%;color:#ffcc66;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:100%;color:#ffcc66;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:100%;color:#ffcc66;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:100%;color:#ffcc66;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:100%;color:#ffcc66;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:100%;color:#ffcc66;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:100%;color:#ffcc66;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:100%;color:#ffcc66;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:100%;color:#ffcc66;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:100%;color:#ffcc66;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:100%;color:#ffcc66;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:100%;color:#ffcc66;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:100%;color:#ffcc66;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;strong&gt;&lt;span style="font-family:times new 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Roman;font-size:100%;color:#ffcc66;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#ffcc66;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#ffcc66;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#ffcc66;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#ffcc66;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#ffcc66;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#ffcc66;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#ffcc66;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#ffcc66;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:100%;color:#000000;"&gt;tab. b - Note di fisiologia del lattato&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4298.0.jpg"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; CURSOR: hand" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4298.0.jpg" border="0" /&gt;&lt;/a&gt;&lt;/div&gt;&lt;/span&gt;&lt;/strong&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div 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c&lt;/span&gt;&lt;/strong&gt;&lt;br /&gt;&lt;/span&gt;&lt;span style="font-family:times new roman;"&gt;&lt;strong&gt;&lt;span style="color:#000000;"&gt;Fattori di regolazione della produzione e utilizzo del lattato&lt;/span&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4299.0.jpg"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; CURSOR: hand" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4299.0.jpg" border="0" /&gt;&lt;/a&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span 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style="color:#000000;"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span 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style="color:#000000;"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;fig. VII&lt;br /&gt;Glicolisi e vie di utilizzazione del piruvato&lt;/span&gt;&lt;/strong&gt; &lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4300.jpg"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; CURSOR: hand" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4300.jpg" border="0" /&gt;&lt;/a&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div 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style="font-family:times new roman;color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc80;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;.fig.VIII&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;span style="color:#000000;"&gt;Deficit di O2 e acidosi lattica&lt;/span&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4301.jpg"&gt;&lt;span style="color:#000000;"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; CURSOR: hand" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4301.jpg" border="0" /&gt;&lt;/span&gt;&lt;/a&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#ffcc33;"&gt;..&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;Fonte: “FM AGGIORNAMENTI”&lt;br /&gt;A. Borghetti – A. Guariglia &lt;/span&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;(Università degli Studi di Parma)&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#000000;"&gt;* * *&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:180%;color:#cc0000;"&gt;&lt;strong&gt;PRIMA DI TUTTO RESISTENZA&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-size:100%;color:#000099;"&gt;___________________&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-size:100%;color:#000099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-size:100%;color:#000099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-size:100%;color:#000099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;font-size:100%;color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;font-size:100%;color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;font-size:100%;color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;font-size:100%;color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;font-size:100%;color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;font-size:100%;color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;font-size:100%;color:#000000;"&gt;&lt;strong&gt;tab. d&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;font-size:100%;color:#000000;"&gt;&lt;strong&gt;Parametri fisiologici dello sportivo e del sedentario&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4302.0.jpg"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; CURSOR: hand" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4302.0.jpg" border="0" /&gt;&lt;/a&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;..&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-size:130%;color:#000099;"&gt;&lt;strong&gt;RESISTENZA FISICA&lt;/strong&gt;&lt;/span&gt;&lt;br /&gt;&lt;br /&gt;&lt;span style="font-size:100%;"&gt;Essere resistenti è la condizione indispensabile per tutti gli atleti che praticano discipline di durata, ma è importante anche per quelli che praticano uno sport di squadra (calcio, pallacanestro, pallavolo, ecc.) e per chi pratica discipline veloci ed esplosive. La &lt;strong&gt;resistenza generale&lt;/strong&gt; (buona efficienza del sistema &lt;strong&gt;cardiocircolatorio&lt;/strong&gt;) è alla base di tutte le discipline sportive. Negli sport dove il sistema &lt;span style="color:#000099;"&gt;&lt;strong&gt;aerobico &lt;/strong&gt;&lt;/span&gt;è quello che fornisce l’energia indispensabile allo sforzo, il miglioramento della resistenza generale è il primo passo verso prestazioni di qualità.&lt;br /&gt;Negli sport di squadra il discorso è molto più complesso, ma nessuno può negare che un pallavolista necessita di una resistenza al salto, o meglio al gesto esplosivo, che un calciatore deve sviluppare la resistenza allo scatto e così via.&lt;br /&gt;Quindi l’allenatore dovrà preparare programmi che tengano conto della durata della gara, del tipo di sforzo, del carattere delle pause e di tanti altri aspetti specifici dell’intervento.&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;span style="color:#000000;"&gt;Un’altra caratteristica molto importante è che attraverso l’allenamento prolungato si migliora la capacità di stabilire rapidamente gli equilibri &lt;strong&gt;idrosalinici e termici&lt;/strong&gt;. Anche questo aspetto, che è fondamentale per i fondisti, risulta importante per gli atleti che gareggiano in determinate condizioni (temperature elevate, alta percentuale di umidità), poiché le difficoltà a smaltire il calore prodotto dal lavoro muscolare determina una scarsa efficienza del sistema nervoso centrale, cioè un appannamento tecnico-tattico, imprecisione, scarsa reattività.&lt;br /&gt;Infine con l’allenamento alla resistenza si impara a convivere con la &lt;strong&gt;fatica&lt;/strong&gt; ed a migliorare alcuni aspetti psicologici: è utile fare dei &lt;span style="color:#000099;"&gt;test da campo&lt;/span&gt; a carattere di resistenza. &lt;/span&gt;&lt;/div&gt;&lt;span style="color:#000000;"&gt;&lt;div align="justify"&gt;&lt;br /&gt;Un altro aspetto importante è il carattere multilaterale dell’allenamento che deve essere visto anche per instaurare rapporti arto-muscolari ottimali. Un’importanza enorme va attribuita al &lt;strong&gt;potenziamento &lt;/strong&gt;mirato dei &lt;strong&gt;&lt;span style="color:#000099;"&gt;muscoli antagonisti&lt;/span&gt;&lt;/strong&gt; e all’allungamento della muscolatura principale. Quindi a seconda della specificità dello sport praticato, è necessario determinare quali siano i muscoli che presentano deficit di forza; questo in genere è il caso degli antagonisti dei muscoli più impegnati e che vanno, quindi, rinforzati in modo specifico. &lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;Così pure vanno individuati i &lt;strong&gt;gruppi di muscoli&lt;/strong&gt; che tendono ad &lt;strong&gt;accorciarsi&lt;/strong&gt; per poterli &lt;strong&gt;&lt;span style="color:#000099;"&gt;allungare&lt;/span&gt;&lt;/strong&gt; in allenamento, in modo mirato. &lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#333399;"&gt;I muscoli possono essere allungati per azione degli antagonisti, per trazione di altri gruppi muscolari, per forza di gravità o con l’aiuto di un pater&lt;/span&gt;. &lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;Infine è bene precisare che non è razionale usare lo stesso carico ciclico per defaticare (ad esempio: dopo lunghe sedute di allenamento di corsa, non è bene usare la corsa lenta, perché ciò continua a sollecitare il tessuto connettivo, le articolazioni ed i legamenti interessati). In alternativa occorre cambiare struttura d’allenamento: &lt;strong&gt;nuoto, esercizi ginnici supini, allungamenti, giochi sportivi per almeno 10 – 15 minuti&lt;/strong&gt;.&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;strong&gt;fig. IX&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4304.jpg"&gt;&lt;span style="color:#000000;"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; CURSOR: hand" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4304.jpg" border="0" /&gt;&lt;/span&gt;&lt;/a&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#ffcc80;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;..&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#000000;"&gt;Fonte: “TEORIA DELL’ALLENAMENTO” D. Marre&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#000000;"&gt;* * *&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:130%;color:#000099;"&gt;&lt;strong&gt;LA VELOCITA’, DEFINIZIONE E FATTORI CHE LA DETERMINANO&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;span style="color:#000000;"&gt;&lt;br /&gt;La velocità, qualità fisica dell’uomo, è la capacità di realizzare azioni motorie in tempo minimo; è determinata da tre fattori fondamentali:&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;1) &lt;strong&gt;il tempo di reazione motoria&lt;/strong&gt;;&lt;br /&gt;2) &lt;strong&gt;la rapidità del singolo movimento;la frequenza dei movimenti&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;3) &lt;strong&gt;la frequenza dei movimenti&lt;/strong&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;Bisogna precisare che le componenti sopra menzionate non sono dipendenti l’una dall’altra; si può essere rapidi nella reazione e lenti nei movimenti, per cui lo sviluppo della velocità nasce da una influenza complessiva sui fattori che la determinano.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;span style="color:#000000;"&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;br /&gt;&lt;strong&gt;&lt;span style="color:#000099;"&gt;CARATTERISTICHE DELLE FIBRE MUSCOLARI&lt;/span&gt;&lt;/strong&gt;:&lt;br /&gt;&lt;br /&gt;Inoltre occorre esaminare le caratteristiche delle &lt;strong&gt;&lt;span style="color:#000099;"&gt;fibre bianche&lt;/span&gt;&lt;/strong&gt;, o rapide e di &lt;span style="color:#000099;"&gt;&lt;strong&gt;quelle rosse&lt;/strong&gt;&lt;/span&gt;, o fasiche. Le differenziazioni più evidenti riguardano le capacità &lt;strong&gt;ossidative&lt;/strong&gt; e quelle glicolitiche, &lt;span style="color:#cc0000;"&gt;&lt;strong&gt;la velocità, la durata e l’intensità delle contrazioni.&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;Le &lt;span style="color:#000099;"&gt;fibre rosse&lt;/span&gt; sono tali per la grossa presenza di mioglobina che aumenta la diffusione di ossigeno e quindi ne predispone la fibra ad un alto consumo; a questa caratteristica se ne affiancano altre, come la bassa velocità di reclutamento delle unità motorie, un elevato numero di mitocondri ed una bassa capacità atpasica.&lt;br /&gt;Le &lt;span style="color:#000099;"&gt;fibre bianche&lt;/span&gt; sono all’opposto: alta velocità, alta attività atpasica e glicolitica.&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;Ovviamente ci sono anche tante fibre con caratteristiche intermedie, che sono poi le responsabili dei diversi livelli di adattamento biochimici e nervosi a seconda dell’allenamento. Quindi l’atleta, in base alle caratteristiche ed alla distribuzione delle sue fibre, si specializza in attività di &lt;strong&gt;forza massima&lt;/strong&gt;, o veloce, o in &lt;strong&gt;quelle di resistenza&lt;/strong&gt;. &lt;/div&gt;&lt;div align="justify"&gt;Le modificazioni ottenibili con l’allenamento non sono ancora completamente chiarite, è comunque sicuro che modificazioni significative si verificano nella quantità dei substrati energetici (gruppo dei fosfati e glicogeno) e nella struttura nervosa, con variazioni della funzionalità neuro-muscolare.&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;Possiamo dividere la velocità in&lt;strong&gt; ciclica&lt;/strong&gt; e &lt;strong&gt;aciclica&lt;/strong&gt;. &lt;/div&gt;&lt;div align="justify"&gt;La velocità &lt;span style="color:#000099;"&gt;ciclica&lt;/span&gt; si compone di azioni tendenzialmente identiche ripetute rapidamente, come ad esempi nella corsa veloce dopo la fase di accelerazione e nella velocità del ciclismo su pista dopo la fase di lancio. &lt;/div&gt;&lt;div align="justify"&gt;La velocità &lt;span style="color:#000099;"&gt;aciclica&lt;/span&gt; si differenzia dalla precedente in quanto il gesto non viene ripetuto, ma si tratta di coordinare i movimenti rapidamente, in una singola azione, come ad esempio nell’esecuzione di un qualsiasi tipo di azione tecnica. &lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;Gli eventi fisiologici che si verificano nell’effettuazione di un qualsiasi movimento attraversano cinque fasi:&lt;br /&gt;&lt;strong&gt;1) &lt;/strong&gt;il prodursi di un’eccitazione del recettore;&lt;br /&gt;&lt;strong&gt;2)&lt;/strong&gt; il passaggio dello stimolo nella rete nervosa e la formazione del segnale effettore;&lt;br /&gt;&lt;strong&gt;3)&lt;/strong&gt; la trasmissione dello stimolo al sistema nervoso centrale (S.N.C.);&lt;br /&gt;&lt;strong&gt;4)&lt;/strong&gt; la trasmissione del segnale di risposta dal S.N.C. ai muscoli;&lt;br /&gt;&lt;strong&gt;5)&lt;/strong&gt; la stimolazione del muscolo e la conseguente contrazione di questo.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;Ognuna di queste fasi richiede un certo tempo (&lt;strong&gt;10/1000 di sec&lt;/strong&gt;.), in pratica quindi il passaggio attraverso esse contribuisce a limitare la velocità.&lt;br /&gt;Biochimicamente i fattori che limitano la velocità sono la rapidità di demolizione dei substrati energetici immediatamente disponibili (&lt;span style="color:#000099;"&gt;&lt;strong&gt;ATP e fosfocreatina&lt;/strong&gt;&lt;/span&gt;), la concentrazione enzimatica e la qualità degli stimoli nervosi.&lt;/span&gt;&lt;/div&gt;&lt;span style="color:#000000;"&gt;&lt;div align="justify"&gt;&lt;br /&gt;Un ruolo importante, anche se non determinante, gioca la rapidità delle reazioni motorie; queste possono essere divise in semplici e complesse: per &lt;span style="color:#000099;"&gt;reazione semplice&lt;/span&gt; si intende la reazione ad un segnale predisposto con un movimento anch’esso predisposto. Per &lt;span style="color:#000099;"&gt;reazione complessa&lt;/span&gt; si intende la reazione ad una situazione non prevista, o parzialmente non predisposta, comprendendo nel tempo di reazione quello necessario alla scelta del movimento di risposta.&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;Alla velocità di movimento concorrono in forma determinante la &lt;span style="color:#000099;"&gt;&lt;strong&gt;forza veloce&lt;/strong&gt;&lt;/span&gt;, la &lt;strong&gt;&lt;span style="color:#000099;"&gt;mobilità articolare&lt;/span&gt;&lt;/strong&gt; e la &lt;span style="color:#000099;"&gt;&lt;strong&gt;coordinazione specifica&lt;/strong&gt;&lt;/span&gt;. &lt;/div&gt;&lt;div align="justify"&gt;La prima favorisce la rottura dello stato di quiete ed il superamento di eventuali resistenze esterne; la seconda permette una diminuizione delle resistenze interne, un’escursione più ampia di movimento e quindi un’applicazione per un tempo più lungo; la terza consente di eseguire il movimento con più precisione facendo intervenire con perfetta sincronia tutti i muscoli deputati al movimento. Un ruolo importante nella realizzazione di azioni esplosive riveste anche la &lt;strong&gt;capacità di concentrazione&lt;/strong&gt;; questa capacità varia notevolmente a seconda degli individui ed è migliorabile solo con esercitazioni che coinvolgono notevolmente la volontà stessa dell’atleta.&lt;/div&gt;&lt;div align="center"&gt;&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;* * *&lt;/div&gt;&lt;div align="center"&gt;&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;&lt;span style="font-size:130%;color:#000099;"&gt;&lt;strong&gt;MEZZI E METODI PER LO SVILUPPO GENERALE DELLA VELOCITA’&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;br /&gt;Considerando le varie componenti fisiche e nervose che concorrono alla qualità in oggetto, possiamo definire dei principi generali d’intervento.&lt;br /&gt;&lt;br /&gt;Il &lt;span style="font-family:arial;"&gt;&lt;strong&gt;primo stadio&lt;/strong&gt;&lt;/span&gt; prevede la determinazione nel giovane del grado di reattività motoria a stimoli visivi, uditivi e tattili, dapprima con il metodo delle reazioni semplici (segnale già conosciuto e risposta già predisposta), poi con quello delle reazioni complesse. Come abbiamo precedentemente esposto non esiste un legame tra velocità di reazione motoria e velocità di movimento, ma entrambe concorrono ad esaltare il rendimento dell’atleta nello sport. Stabilito questo fattore di origine prettamente nervosa e poco modificabile, si comincia a lavorare sulla prima componente della velocità di movimento, la forza veloce, senza però ricercare una specializzazione e tenendo presente che per questa qualità in particolare è opportuno intervenire &lt;strong&gt;molto precocemente nell’età&lt;/strong&gt;. &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;I mezzi più congeniali, sia dal punto di vista metodologico, che da quello pedagogico, sono &lt;strong&gt;i giochi sportivi&lt;/strong&gt; ed i &lt;strong&gt;giochi tradizionali&lt;/strong&gt;. &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;Per &lt;span style="color:#000099;"&gt;giochi sportivi&lt;/span&gt; si intende tutto l’insieme dei giochi con la palla, che presentano una vasta gamma di movimenti ed un’alternanza tra momenti di relativo riposo e momenti di notevole impegno fisico e nervoso. &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;Per &lt;span style="color:#000099;"&gt;giochi tradizionali&lt;/span&gt; si deve intendere quelli che richiedono abilità motoria ed impegno muscolare (vari tipi di staffette, con percorsi d’equilibrio, con ostacoli, ecc.).&lt;br /&gt;Inoltre, come mezzo complementare ai giochi è da considerare il &lt;strong&gt;preatletismo in generale&lt;/strong&gt;, con tutto l’insieme di esercizi a carico naturale che lo compongono. &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;Per atleti sui &lt;strong&gt;&lt;span style="font-family:arial;color:#000099;"&gt;16 – 18 anni&lt;/span&gt;&lt;/strong&gt; è necessario che si intervenga anche con carichi specifici per l’aumento della forza veloce.&lt;/span&gt;&lt;/div&gt;&lt;span style="color:#000000;"&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;span style="font-family:arial;"&gt;&lt;strong&gt;Seconda componente&lt;/strong&gt;&lt;/span&gt; essenziale, come abbiamo visto, è la mobilità articolare e la capacità di rapida decontrazione del muscolo. Il mezzo più indicato per migliorarle è la &lt;strong&gt;ginnastica d’allungamento&lt;/strong&gt;, attiva e passiva, da eseguirsi in ogni allenamento; ma esistono anche altri mezzi, quali il fare abituare l’atleta &lt;strong&gt;all’ampiezza del movimento&lt;/strong&gt;. L’importante è che ogni allenatore sappia che una grande mobilità articolare è basilare per la corretta esecuzione di ogni gesto atletico.&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;span style="font-family:arial;"&gt;&lt;strong&gt;Terza componente&lt;/strong&gt;&lt;/span&gt; è la coordinazione generale e specifica. &lt;/div&gt;&lt;div align="justify"&gt;Il primo intervento deve essere generale: il suo scopo sarà quello di ampliare la capacità di fare movimenti, sfruttando gli esercizi più disparati abbinandoli tra loro e &lt;span style="font-family:arial;"&gt;obbligando così il giovane a rielaborare degli schemi motori già acquisiti&lt;/span&gt;. &lt;/div&gt;&lt;div align="justify"&gt;Così facendo si sprona l’intelligenza motoria dell’atleta senza mai consentirgli di adagiarsi sull’abilità che ha raggiunto nei movimenti ormai noti. &lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;Tra questi mezzi possiamo inserire&lt;strong&gt; l’acrobatica&lt;/strong&gt;, con tutta la sua successione di esercizi. &lt;/div&gt;&lt;div align="justify"&gt;L’intervento successivo consiste nell’insegnamento della &lt;strong&gt;tecnica sportiva&lt;/strong&gt;, ricordando che un’ampia conoscenza dei movimenti rende possibile un migliore apprendimento della tecnica. È questa la prima fase della &lt;strong&gt;coordinazione specifica&lt;/strong&gt;. &lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;In seguito si passerà alla &lt;strong&gt;seconda&lt;/strong&gt; fase della coordinazione specifica, cercando di migliorare la capacità d’esecuzione di un gesto tecnico in situazioni particolari di movimento. Tutto ciò è possibile solo se con il continuo addestramento tecnico e la ripetizione dell’azione, riusciamo ad automatizzare l’azione, escludendo dal normale percorso che deve compiere lo stimolo, per ottenere una risposta motoria, il sistema nervoso centrale (riflesso condizionato). &lt;/div&gt;&lt;div align="justify"&gt;Per la velocità di movimento possiamo ancora intervenire migliorando un altro dei fattori che la determinano: la volontà, o meglio la &lt;strong&gt;capacità di concentrazione&lt;/strong&gt;. &lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;Riassumendo possiamo dire che la &lt;strong&gt;&lt;span style="color:#000099;"&gt;velocità &lt;/span&gt;&lt;/strong&gt;ha due motrici:&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;1) &lt;span style="font-family:arial;"&gt;la prima prettamente nervosa, fatta di percezioni, di trasporti più o meno veloci degli stimoli recettori ed effettori dai muscoli al S.N.C. e viceversa;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;2) &lt;span style="font-family:arial;"&gt;la seconda prettamente fisica, correlata alle capacità di forza veloce, di mobilità articolare, di coordinazione generale e specifica.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;Solo intervenendo in tempo su queste due componenti, &lt;strong&gt;in particolare sulla seconda&lt;/strong&gt;, perché la prima e poco modificabile, si può migliorare in modo apprezzabile. Infatti la velocità, come le altre qualità fisiche, ha un andamento condizionato dallo sviluppo complessivo dell’individuo e in primo luogo dalla sua maturazione fisiologica; comunque rispetto alle altre qualità fisiche, quali la forza e la resistenza, la sua alienabilità è di norma sensibilmente inferiore. &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;br /&gt;Secondo alcuni autori gli incrementi non superano il &lt;strong&gt;18%, 20%&lt;/strong&gt; e possibilità concrete di miglioramento si possono avere solo &lt;strong&gt;nell’età precoce&lt;/strong&gt;, diciamo entro i &lt;strong&gt;&lt;span style="color:#000099;"&gt;14 – 15 anni&lt;/span&gt;&lt;/strong&gt;. In seguito gli incrementi saranno relativi ed, in pratica, per ottenerli si potrà agire solo sulla forza veloce.&lt;/span&gt;&lt;/div&gt;&lt;span style="color:#000000;"&gt;&lt;div align="justify"&gt;&lt;br /&gt;Per concludere possiamo fare alcuni esempi metodologici che è bene sempre tenere presenti quando si facciano sostenere allenamenti volti ad incrementare la velocità generale e specifica:&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;span style="font-family:arial;"&gt;1) l’intensità dello stimolo deve essere massimale, tenendo conto che esiste già, o almeno dovrebbe esistere, la padronanza del gesto; la ripetizione sistematica di uno stesso esercizio a velocità costante e non massimale crea, infatti,&lt;br /&gt;una stabilizzazione ed una assimilizzazione del movimento a quella velocità rendendo estremamente difficoltoso il passaggio ad esecuzioni più veloci.&lt;br /&gt;2) la durata dello stimolo deve consentire la realizzazione di movimenti della massima velocità e deve protrarsi per un tempo che risulti sufficientemente allenante (10 ÷ 15 sec.); esecuzioni troppo brevi (2 ÷ 3 sec.) non hanno l’efficacia massimale ed esercitazioni troppo lunghe non consentono lo sviluppo della massima velocità.&lt;br /&gt;3) Il tempo di recupero dovrà essere abbastanza lungo, dai 3 ai 5 minuti e durante esso si dovrà stare attenti a non perdere la dovuta concentrazione nervosa (questo tenendo presente che le prestazioni massimali risultano stressanti dal punto di vista fisico e psicologico).&lt;br /&gt;4) La quantità di lavoro dovrà essere ridotta, essendo alta l’intensità ed il lavoro specifico per la velocità dovrà essere inserito preferibilmente all’inizio dell’allenamento, dopo un riscaldamento accurato, ma non affaticante. Settimanalmente sono sufficienti, per la velocità, una o al massimo due sedute d’allenamento, secondo le necessità soggettive degli atleti ed il periodo di preparazione in atto.&lt;br /&gt;&lt;/span&gt;&lt;br /&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;Fonte: “METODOLOGIE DELL’ALLENAMENTO PER&lt;br /&gt;LO SVILUPPO DELLE QUALITA’ FISICHE”&lt;br /&gt;Centro studi del CONI&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/span&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#ffcc80;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#ffcc80;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:130%;color:#000000;"&gt;* * *&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:130%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:130%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:130%;color:#000099;"&gt;&lt;strong&gt;LA RESISTENZA ORGANICA AEROBICA&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:trebuchet ms;"&gt;&lt;/span&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;&lt;span style="font-size:100%;"&gt;È la qualità che consente&lt;/span&gt; di proseguire il più a lungo possibile uno sforzo muscolare generalizzato in condizioni &lt;strong&gt;&lt;span style="color:#000099;"&gt;aerobiche&lt;/span&gt;&lt;/strong&gt;, cioè durante uno sforzo che richiede una quantità di ossigeno inferiore od uguale a quella massima che è possibile utilizzare ed utilizzabile. &lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;Semplificando: il muscolo sfrutta direttamente una sola fonte d’energia, l’&lt;strong&gt;&lt;span style="color:#000099;"&gt;ATP&lt;/span&gt;&lt;/strong&gt;, che scindendosi in &lt;strong&gt;&lt;span style="color:#000099;"&gt;ADP&lt;/span&gt;&lt;/strong&gt; libera energia chimica che viene trasformata in energia meccanica dal muscolo stesso; ogni altra sorgente d’energia non può essere sfruttata direttamente. Ma poiché l’ATP è contenuto in piccole quantità nei muscoli non sarebbe possibile un’attività continuata se non si riformasse a spese di altri processi (vedi il &lt;span style="color:#000099;"&gt;RUOLO DELL’ATP&lt;/span&gt;). &lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;Il più diretto ed immediato è la riduzione della f&lt;strong&gt;&lt;span style="color:#000099;"&gt;osfocreatina&lt;/span&gt;&lt;/strong&gt; che consente la resintesi dell’ATP ; ma anche la fosfocreatina è contenuta nei muscoli in quantità ridotte e anch’essa non consentirebbe un lavoro prolungato se non si riformasse da altre fonti energetiche biologiche (&lt;span style="color:#000099;"&gt;&lt;strong&gt;glicidi, lipidi&lt;/strong&gt;&lt;/span&gt;). Questo avviene in presenza di &lt;strong&gt;&lt;span style="color:#000099;"&gt;ossigeno&lt;/span&gt;&lt;/strong&gt; e, da qui, la necessità di assumerne una quantità proporzionale allo sforzo effettuato. Inoltre l’ossigeno interviene nei processi di riduzione dell’&lt;strong&gt;&lt;span style="color:#000099;"&gt;acido lattico&lt;/span&gt;&lt;/strong&gt;.&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;span style="font-family:arial;"&gt;Il livello della resistenza organica aerobica, quindi, dipende dalla capacità di un individuo di assumere e trasmettere ossigeno sempre più rapidamente alle masse muscolari. &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;Semplificando ancora: durante un allenamento od una gara aumenta la necessità di &lt;strong&gt;ATP&lt;/strong&gt; e, quindi, la necessità di ossigeno per “bruciare” le fonti d’energia biologiche atte a risentitizzare l’&lt;strong&gt;ATP&lt;/strong&gt; stesso. L’atleta potrà aumentare il suo sforzo fisico fino a quando la richiesta di &lt;strong&gt;ossigeno&lt;/strong&gt; sarà uguale a quella che è capace di assumere e far giungere ai muscoli. &lt;/div&gt;&lt;div align="justify"&gt;Fino a quando l’intensità dello sforzo rimarrà entro questi limiti egli potrà indefinitivamente continuare a sopportarlo (&lt;strong&gt;&lt;span style="font-family:arial;color:#000099;"&gt;condizione di steady-state&lt;/span&gt;&lt;/strong&gt;), se invece l’intensità dello sforzo aumenterà ancora, egli contrarrà un &lt;span style="color:#000099;"&gt;debito d’ossigeno&lt;/span&gt; che gli limiterà la durata dello sforzo stesso e che tratteremo nella &lt;strong&gt;&lt;span style="color:#000099;"&gt;resistenza anaerobica&lt;/span&gt;&lt;/strong&gt;.&lt;br /&gt;&lt;br /&gt;Per concludere indichiamo gli organi responsabili delle capacità d’ossigenare i muscoli e cioè il &lt;strong&gt;cuore &lt;/strong&gt;e quelli atti all’efficacia degli scambi gassosi ed alcune metodologie generali per migliorarne le funzionalità.&lt;br /&gt;&lt;br /&gt;&lt;strong&gt;&lt;span style="color:#000099;"&gt;FUNZIONALITA’ CARDIOCIRCOLATORIA&lt;/span&gt;&lt;/strong&gt;: l’allenamento ad&lt;strong&gt;&lt;span style="font-family:arial;color:#cc0000;"&gt; intervallo corto&lt;/span&gt;&lt;/strong&gt; è lo stimolo più potente per assicurare lo sviluppo del cuore e della sua capacità funzionale. L’allenamento ad intervallo, di cui il più noto è &lt;strong&gt;&lt;span style="color:#000099;"&gt;l’interval-training&lt;/span&gt;&lt;/strong&gt;, è caratterizzato da:&lt;br /&gt;&lt;br /&gt;&lt;strong&gt;1) durata dello sforzo&lt;br /&gt;2) intensità dello sforzo&lt;br /&gt;3) tempo di recupero&lt;br /&gt;4) numero delle prove&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;La &lt;span style="color:#000099;"&gt;durata dello sforzo&lt;/span&gt; dovrà essere compresa fra ca. &lt;strong&gt;30 secondi e 2 minuti&lt;/strong&gt;, con esercizi (corsa fino a 400 m., esercizi a carico naturale, giochi, ecc.) tali da garantire i tempi prestabiliti.&lt;/span&gt;&lt;/div&gt;&lt;span style="color:#000000;"&gt;&lt;div align="justify"&gt;&lt;br /&gt;L’ &lt;span style="color:#000099;"&gt;intensità dello sforzo&lt;/span&gt; dovrà essere compresa tra &lt;strong&gt;l’80% e l’85%&lt;/strong&gt; dello sforzo massimo, cioè i battiti cardiaci dovranno essere tra &lt;strong&gt;l’80% e l’85%&lt;/strong&gt; della &lt;span style="color:#000099;"&gt;&lt;strong&gt;soglia massima&lt;/strong&gt;&lt;/span&gt; (vedi fig. I).&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;I tempi di recupero &lt;strong&gt;non&lt;/strong&gt; devono portare ad una completa ristabilizzazione, il nuovo carico dovrà partire quando avremo una frequenza cardiaca tra &lt;strong&gt;120 e 130 battiti/minuto&lt;/strong&gt; (tenendo di conto degli obiettivi e dell’età).&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;Il numero delle prove dipenderà dal grado d’allenamento e comunque tra&lt;strong&gt; 5 e 10&lt;/strong&gt;.&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;br /&gt;&lt;strong&gt;&lt;span style="color:#000099;"&gt;FUNZIONALITA’ DEGLI ORGANI ATTI AGLI SCAMBI GASSOSI:&lt;/span&gt;&lt;/strong&gt; l’allenamento migliore è il lavoro continuo e, cioè, un lavoro che stia tra i &lt;strong&gt;45 minuti ed 1 ora o più&lt;/strong&gt; e la cui intensità sia tale che la frequenza cardiaca non superi, durante tutto il lavoro,&lt;strong&gt; l’80%&lt;/strong&gt; e non scenda sotto il&lt;strong&gt; 65%&lt;/strong&gt; della &lt;span style="color:#000099;"&gt;&lt;strong&gt;soglia massima&lt;/strong&gt;&lt;/span&gt;. &lt;/div&gt;&lt;div align="justify"&gt;Anche in questo caso l’allenatore potrà sbizzarrirsi nell’indicare i tipi d’esercizio, senza dimenticare che la corsa resta uno dei più efficaci.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;---------------------------------------------------------&lt;br /&gt;&lt;span style="font-family:times new roman;"&gt;(N.B.: i numeri percentuali e quantitativi possono oscillare ± di leggere variazioni in base all’età, alle caratteristiche ed agli obiettivi dell’atleta)&lt;br /&gt;&lt;/span&gt;---------------------------------------------------------&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;La &lt;span style="color:#000099;"&gt;resistenza organica aerobica&lt;/span&gt; è alla base di tutte le specialità, in quanto non solo permette di prolungare i tempi d’allenamento, ma favorisce anche il recupero negli sforzi particolarmente intensi, aumentando le capacità di resistenza anaerobica.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;span style="font-size:130%;color:#000099;"&gt;LA RESISTENZA ORGANICA ANAEROBICA&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;span style="font-size:130%;color:#000099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;br /&gt;È la qualità che permette di proseguire il &lt;strong&gt;più a lungo possibile&lt;/strong&gt; uno sforzo muscolare generalizzato in condizioni &lt;strong&gt;&lt;span style="color:#000099;"&gt;anaerobiche&lt;/span&gt;&lt;/strong&gt;, cioè quando uno sforzo fisico richiede più ossigeno di quello che è possibile assumere (debito d’ossigeno). &lt;/div&gt;&lt;div align="justify"&gt;In questo caso si forma nei muscoli &lt;span style="color:#000099;"&gt;&lt;strong&gt;acido lattico&lt;/strong&gt;&lt;/span&gt; che può essere tollerato in quantità ridotte, dopo di che inibisce le funzionalità del muscolo in quanto è la sostanza chimica causa della fatica. Lo sforzo in queste condizioni può essere molto intenso, ma di breve durata (&lt;strong&gt;circa 45 secondi&lt;/strong&gt;).&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;Una volta cessato lo sforzo l’organismo si trova nella necessità di eliminare una parte dell’acido lattico accumulato e di resintetizzare il rimanente in &lt;strong&gt;&lt;span style="color:#000099;"&gt;acido piruvico&lt;/span&gt;&lt;/strong&gt; e per fare questo occorre recuperare il &lt;span style="color:#000099;"&gt;&lt;strong&gt;debito d’ossigeno&lt;/strong&gt;&lt;/span&gt; ed è per questo che dopo uno sforzo intenso, cessato tale sforzo, gli atti respiratori e la frequenza cardiaca non diminuiscono subito, ma permangono numerosi per un certo tempo. &lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;In definitiva, aumentare la &lt;strong&gt;resistenza organica anaerobica&lt;/strong&gt;, significa aumentare le capacità di sopportare quantità sempre maggiori di acido lattico, aumentare, cioè, il debito d’ossigeno che si può accumulare. &lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;La resistenza organica anaerobica dipende principalmente da due fattori:&lt;br /&gt;&lt;span style="font-family:arial;"&gt;1) dalla &lt;strong&gt;resistenza organica aerobica&lt;/strong&gt;; infatti è evidente che più grande è la capacità dell’organismo di trasportare ed utilizzare ossigeno in quantità sempre maggiori, più difficilmente si andrà in debito d’ossigeno (occorreranno sforzi sempre più intensi).&lt;br /&gt;2) Dalla capacità fisiologica e psicologica di resistere alla presenza di acido lattico.&lt;br /&gt;&lt;/span&gt;&lt;br /&gt;Del primo punto abbiamo già parlato, per il secondo l’allenamento più opportuno è quello ad intervallo lungo, o frazionati lunghi; questo prevede i seguenti parametri:&lt;br /&gt;&lt;strong&gt;1) durata dello sforzo&lt;br /&gt;2) intensità dello sforzo&lt;br /&gt;3) tempo di recupero&lt;br /&gt;4) numero delle prove&lt;br /&gt;&lt;/strong&gt;&lt;br /&gt;La durata dello sforzo dovrà essere compresa, in base all’intensità dello stesso, tra i &lt;strong&gt;45 secondi&lt;/strong&gt; ed i &lt;strong&gt;4 minuti&lt;/strong&gt;, con esercizi di corsa, lavori specifici con o senza carico, ecc.&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;L’intensità dello sforzo deve essere tale da avvicinarsi il più possibile alla &lt;strong&gt;&lt;span style="color:#000099;"&gt;soglia massima del ritmo cardiaco&lt;/span&gt;&lt;/strong&gt; ( vedi fig. I).&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;Il tempo di recupero dovrà essere quello sufficiente a far tornare la frequenza cardiaca a circa &lt;strong&gt;120 battiti/minuto&lt;/strong&gt;, o tale da aver pagato &lt;strong&gt;in parte&lt;/strong&gt; il debito d’ossigeno.&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;Il numero delle prove dovrà essere tra &lt;strong&gt;4 e 8&lt;/strong&gt;, essendo un allenamento impegnativo.&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;Per concludere è bene avere presente che l’allenamento ad intervallo lungo è una metodica molto impegnativa (se ben eseguita) e pertanto &lt;span style="font-family:arial;color:#cc0000;"&gt;&lt;strong&gt;sconsigliabile &lt;/strong&gt;&lt;/span&gt;a ragazzi di età inferiore ai &lt;strong&gt;15/16&lt;/strong&gt; anni ed agli atleti che non abbiano già acquisito una solida resistenza aerobica (una buona preparazione fisica generale).&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;Fonte: “METODOLOGIE DELL’ALLENAMENTO PER&lt;br /&gt;LO SVILUPPO DELLE QUALITA’ FISICHE”&lt;br /&gt;Centro studi del CONI&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;em&gt;&lt;span style="color:#000000;"&gt;continua nel Libro parte 3...&lt;/span&gt;&lt;/em&gt;&lt;/div&gt;&lt;div class="blogger-post-footer"&gt;&lt;img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/22297760-113966378690236283?l=omarmagazinesport.blogspot.com' alt='' /&gt;&lt;/div&gt;</content><link rel='replies' type='application/atom+xml' href='http://omarmagazinesport.blogspot.com/feeds/113966378690236283/comments/default' title='Post Comments'/><link rel='replies' type='text/html' href='http://www.blogger.com/comment.g?blogID=22297760&amp;postID=113966378690236283' title='0 Comments'/><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/22297760/posts/default/113966378690236283'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/22297760/posts/default/113966378690236283'/><link rel='alternate' type='text/html' href='http://omarmagazinesport.blogspot.com/2006/02/sport-il-libro-parte-2-da-acido.html' title='SPORT - Il Libro - parte 2. (Da Acido Lattico a La Resistenza Organica Anaerobica)'/><author><name>Omar</name><uri>http://www.blogger.com/profile/00706607423468173707</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='32' height='24' src='http://4.bp.blogspot.com/_jgm8E7gW3QY/SvFNV2vhhQI/AAAAAAAABck/uHSQBKPWnfo/S220/io+duna+45.jpg'/></author><thr:total>0</thr:total></entry><entry><id>tag:blogger.com,1999:blog-22297760.post-113992180918578251</id><published>2006-02-10T04:48:00.000-08:00</published><updated>2006-02-14T05:19:09.590-08:00</updated><title type='text'>SPORT - Il Libro - parte 3. (Da La Periodizzazione dell' Allenamento a Il Periodo Preparatorio - Competitivo - Transitorio</title><content type='html'>&lt;div align="center"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-size:130%;color:#cc0000;"&gt;&lt;strong&gt;&lt;span style="font-size:180%;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:130%;"&gt;&lt;span style="font-size:180%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-size:130%;color:#cc0000;"&gt;&lt;strong&gt;&lt;span style="font-size:180%;"&gt;LA PERIODIZZAZIONE DELL’ALLENAMENTO&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-size:130%;color:#cc0000;"&gt;&lt;strong&gt;&lt;span style="font-size:85%;"&gt;___________________________&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-size:130%;color:#cc0000;"&gt;&lt;strong&gt;&lt;span style="font-size:85%;"&gt;&lt;/span&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;/strong&gt;&lt;/span&gt;&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;&lt;span style="font-family:times new roman;"&gt;Individuati tutti i mezzi d’allenamento di cui si può disporre, dobbiamo usarli tutti in funzione dell’età e della stagione agonistica, operando una scelta dei mezzi da usare e dei metodi con cui vanno usati. In altre parole occorre&lt;strong&gt; pianificare&lt;/strong&gt; gli allenamenti, o meglio &lt;strong&gt;programmarli&lt;/strong&gt;, in quanto la programmazione è la realizzazione pratica della pianificazione, intendendo con ciò la proiezione di un’attività futura per un&lt;strong&gt; periodo di tempo piuttosto lungo&lt;/strong&gt;.&lt;/span&gt;&lt;/div&gt;&lt;span style="font-family:times new roman;"&gt;&lt;div align="justify"&gt;&lt;br /&gt;Attualmente il principio razionale inspiratore della pianificazione dell’allenamento sportivo è quello della &lt;strong&gt;&lt;span style="color:#000099;"&gt;periodizzazione&lt;/span&gt;&lt;/strong&gt;, cioè della suddivisione in periodi del &lt;strong&gt;&lt;span style="color:#000099;"&gt;ciclo annuale&lt;/span&gt;&lt;/strong&gt; dell’allenamento. I principi della periodizzazione obbediscono a precise leggi fisiologiche che governano la capacità dell’organismo di raggiungere il miglior grado di &lt;strong&gt;&lt;span style="color:#000099;"&gt;forma&lt;/span&gt;&lt;/strong&gt; e di mantenimento per un ceto periodo di tempo.&lt;br /&gt;È necessario, quindi, analizzare più a fondo il concetto di forma sportiva e le leggi che ne regolano lo sviluppo. &lt;/div&gt;&lt;div align="justify"&gt;Innanzitutto occorre distinguere tra &lt;strong&gt;condizione fisica&lt;/strong&gt; e &lt;strong&gt;forma&lt;/strong&gt;. &lt;/div&gt;&lt;div align="justify"&gt;La prima è data da un alto livello delle capacità funzionali dell’organismo e &lt;strong&gt;può essere mantenuta a lungo&lt;/strong&gt;; la forma è quella condizione in cui l’atleta riesce a sintetizzare al massimo tutte le potenzialità fisiche e psicologiche, finalizzandole allo scopo agonistico con il massimo rendimento. Questo può essere raggiunto &lt;strong&gt;&lt;span style="font-family:arial;"&gt;una, due, massimo tre volte&lt;/span&gt;&lt;/strong&gt; in un anno e mantenute per un certo periodo di tempo la cui durata è determinata dal numero di volte che intendiamo farla raggiungere. &lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;Nel processo di acquisizione della forma si distinguono tre fasi:&lt;br /&gt;&lt;strong&gt;1) di sviluppo&lt;br /&gt;2) di mantenimento&lt;br /&gt;3) di perdita temporanea&lt;/strong&gt;&lt;br /&gt;&lt;br /&gt;La fase di sviluppo comprende due tappe:&lt;br /&gt;&lt;strong&gt;a)&lt;/strong&gt; la ricerca della condizione fisica&lt;br /&gt;&lt;strong&gt;b)&lt;/strong&gt; la ricerca, attraverso un lavoro specifico, fisico e tecnico-tattico, della forma.&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;La fase di &lt;strong&gt;&lt;span style="color:#000099;"&gt;mantenimento&lt;/span&gt;&lt;/strong&gt; è caratterizzata da leggere ondulazioni del grado di forma in relazione ai carichi d’allenamento, oppure dovute a cause esterne contingenti (piccoli infortuni o piccole indisposizioni).&lt;br /&gt;La fase della &lt;strong&gt;&lt;span style="color:#000099;"&gt;perdita temporanea&lt;/span&gt;&lt;/strong&gt; si ha nel periodo transitorio ed è caratterizzata da un calo della condizione fisica. In questo caso è assolutamente necessario &lt;strong&gt;non abbandonare&lt;/strong&gt; l’attività fisica, anzi occorre recuperare e mantenere la condizione fisica con lavori specifici.&lt;br /&gt;&lt;span style="font-family:arial;"&gt;È molto importante ricordare che l’eccessivo prolungamento del periodo di mantenimento causa delle difficoltà notevoli nello sviluppo della forma del ciclo successivo &lt;/span&gt;(vedi fig. IX, X, XI, XII).&lt;br /&gt;Per i &lt;strong&gt;giovani&lt;/strong&gt; è opportuna una periodizzazione con &lt;strong&gt;&lt;span style="color:#000099;"&gt;ciclo annuale&lt;/span&gt;&lt;/strong&gt;, per &lt;strong&gt;atleti più evoluti&lt;/strong&gt; quella &lt;strong&gt;semestrale&lt;/strong&gt;.&lt;/span&gt;&lt;/div&gt;&lt;span style="font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-size:78%;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:times new roman;font-size:78%;"&gt;Fonte: “METODOLOGIE DELL’ALLENAMENTO PER&lt;br /&gt;LO SVILUPPO DELLE QUALITA’ FISICHE” Centro studi del CONI&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#000000;"&gt;&lt;strong&gt;GRAFICI DI SVILUPPO E MANTENIMENTO DELLA FORMA. CICLO ANNUALE&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:130%;color:#cc0000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:130%;color:#cc0000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;span style="font-size:130%;color:#cc0000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;"&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4317.jpg"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; WIDTH: 353px; CURSOR: hand; HEIGHT: 400px" height="400" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4317.jpg" width="342" border="0" /&gt;&lt;/a&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffffff;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;"&gt;Fonte: COMITATO OLIMPICO Germania. Federaz. Lanciatori del disco.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:130%;color:#000099;"&gt;&lt;strong&gt;LA COSTRUZIONE DELL'ALLENAMENTO&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-size:130%;color:#000099;"&gt;_________________&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-size:130%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-size:130%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;L’allenamento si costruisce &lt;strong&gt;programmandolo&lt;/strong&gt; unità per unità, ma nel concetto di periodizzazione, tenendo di conto di &lt;strong&gt;tre strutture&lt;/strong&gt;:&lt;br /&gt;&lt;strong&gt;&lt;span style="font-family:arial;"&gt;1) il mesociclo&lt;br /&gt;2) il microciclo&lt;br /&gt;3) il singolo allenamento&lt;br /&gt;&lt;/span&gt;&lt;/strong&gt;&lt;br /&gt;Il &lt;strong&gt;&lt;span style="font-family:arial;color:#000099;"&gt;mesociclo&lt;/span&gt;&lt;/strong&gt; può variare da &lt;strong&gt;20 a 60 giorni&lt;/strong&gt; e quindi essere composto da &lt;strong&gt;3 a 8 microcicli&lt;/strong&gt; e deve rispettare l’andamento ondulatorio dei carichi di lavoro, in modo tale che si possano incrementare lo sviluppo delle qualità ed il rispetto dei tempi di ripristino dell’organismo. Quindi i microcicli che lo compongono dovranno alternarsi tra carichi impegnativi e compensazioni.&lt;br /&gt;I mesocicli possono essere di 5 tipi: &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;br /&gt;&lt;/span&gt;&lt;strong&gt;1) introduttivo&lt;br /&gt;2) di base&lt;br /&gt;3) preagonistici&lt;br /&gt;4) interagonistici&lt;br /&gt;5) di compensazione&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;strong&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt; &lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;/strong&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4318.0.jpg"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; CURSOR: hand" height="369" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4318.0.jpg" width="360" border="0" /&gt;&lt;/a&gt;I &lt;strong&gt;&lt;span style="color:#000099;"&gt;mesocicli introduttivi&lt;/span&gt;&lt;/strong&gt; sono caratterizzati da un aumento costante delle &lt;strong&gt;intensità&lt;/strong&gt; e delle &lt;strong&gt;&lt;span style="color:#cc0000;"&gt;quantità&lt;/span&gt;&lt;/strong&gt;, con netta prevalenza di quest’ultima. Ogni periodo agonistico comincia con questo mesociclo. &lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;I &lt;strong&gt;&lt;span style="color:#000099;"&gt;mesocicli di base&lt;/span&gt;&lt;/strong&gt; sono quelli più &lt;strong&gt;importanti&lt;/strong&gt; dell’intero periodo preparatorio e durante i qualI viene svolto il lavoro fondamentale, volto ad incrementare le capacità funzionali dell’organismo ed al perfezionamento della tattica e della tecnica. A seconda del loro contenuto si distinguono in &lt;strong&gt;mesocicli di preparazione generale&lt;/strong&gt; o di &lt;strong&gt;preparazione specifica&lt;/strong&gt;. A seconda delle esigenze si possono distinguere in mesocicli di &lt;strong&gt;sviluppo &lt;/strong&gt;o di &lt;strong&gt;stabilizzazione&lt;/strong&gt;. Durante questi mesocicli di base il carico di lavoro sarà elevato, anche se si dovranno inserire &lt;span style="color:#000099;"&gt;1 o 2 microcicli di compensazione&lt;/span&gt; per concedere all’organismo un recupero adeguato. &lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;I &lt;strong&gt;&lt;span style="color:#000099;"&gt;mesocicli preagonistici&lt;/span&gt;&lt;/strong&gt; precedono le &lt;strong&gt;competizioni&lt;/strong&gt; più importanti ed in essi l’allenamento sarà di carattere specialistico ed intenso, preceduto di norma da un microciclo di compensazione. &lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;br /&gt;I mesocicli &lt;strong&gt;interagonistici&lt;/strong&gt; sono inseriti fra competizioni vicine tra loro (&lt;strong&gt;3 ÷ 4 settimane&lt;/strong&gt;). Periodi più lunghi vanno affrontati con mesocicli di base. Inizieranno con un microciclo di compensazione e dovranno tendere al mantenimento della forma con carichi appropriati. &lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;I mesocicli di &lt;strong&gt;compensazione&lt;/strong&gt; sono caratterizzati da carichi di bassa intensità ed estremamente vari per consentire il pieno recupero dell’organismo. Non dovranno superare le &lt;strong&gt;2 ÷ 3 settimane&lt;/strong&gt;. Dovranno essere inseriti, comunque, 2 o 3 singoli allenamenti con carichi più elevati (uno per microciclo).&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-size:130%;color:#000099;"&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4319.jpg"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 0px 10px 10px; CURSOR: hand" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4319.jpg" border="0" /&gt;&lt;/a&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4318.jpg"&gt;&lt;/a&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;span style="color:#cc80ff;"&gt;&lt;br /&gt;&lt;/span&gt;&lt;strong&gt;&lt;span style="font-size:130%;color:#000099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-size:130%;color:#000099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-size:130%;color:#000099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-size:130%;color:#000099;"&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4321.jpg"&gt;&lt;img style="FLOAT: right; MARGIN: 0px 0px 10px 10px; CURSOR: hand" height="166" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4321.jpg" width="374" border="0" /&gt;&lt;/a&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-size:130%;color:#000099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-size:130%;color:#000099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;strong&gt;&lt;span style="font-size:78%;"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;strong&gt;&lt;span style="font-size:78%;"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;strong&gt;&lt;span style="font-size:78%;"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;strong&gt;&lt;span style="font-size:78%;"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;strong&gt;&lt;span style="font-size:78%;"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;strong&gt;&lt;span style="font-size:78%;"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;strong&gt;&lt;span style="font-size:78%;"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-size:78%;color:#000099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-size:78%;color:#000099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-size:78%;color:#000099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-size:78%;color:#000099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-size:78%;color:#000099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:78%;"&gt;&lt;strong&gt;&lt;span style="color:#ffcc80;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:78%;"&gt;&lt;strong&gt;&lt;span style="color:#ffcc80;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:78%;"&gt;&lt;strong&gt;&lt;span style="color:#ffcc80;"&gt;.....................................................&lt;/span&gt; Leggenda: G = grande ; M = medio ; L = leggero&lt;/strong&gt;&lt;/span&gt; &lt;/div&gt;&lt;div align="center"&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;..&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;"&gt;&lt;span style="color:#000000;"&gt;Il &lt;/span&gt;&lt;strong&gt;&lt;span style="font-family:arial;color:#000099;"&gt;microciclo&lt;/span&gt;&lt;/strong&gt; &lt;span style="color:#000000;"&gt;è una fase d’allenamento settimanale e può variare dalle &lt;strong&gt;&lt;span style="color:#000000;"&gt;5 alle 10 sedute&lt;/span&gt;&lt;/strong&gt; di singoli allenamenti (nella pratica dello sport amatoriale, dove le esigenze sportive si intrecciano con quelle della vita – studio – lavoro, ecc., tale intensità di sedute è praticamente impossibile perciò occorre calibrare il microciclo avendo a disposizione molte sedute in meno. Si possono ottenere dei buoni risultati – eccetto alcuni sport tipo il nuoto, canottaggio, lotta e simili – con &lt;strong&gt;3 &lt;/strong&gt;singoli allenamenti settimanali).&lt;br /&gt;I microcicli devono avere carattere ondulatorio rispetto ai carichi e si suddividono in 3 tipi&lt;/span&gt;:&lt;br /&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:arial;"&gt;&lt;strong&gt;1) d’allenamento&lt;br /&gt;2) precompetitivi&lt;br /&gt;3) di compensazione&lt;br /&gt;&lt;/strong&gt;&lt;/span&gt;&lt;br /&gt;&lt;/span&gt;&lt;span style="color:#000000;"&gt;I&lt;/span&gt; &lt;span style="color:#3333ff;"&gt;&lt;strong&gt;microcicli d’allenamento&lt;/strong&gt;&lt;/span&gt; &lt;span style="color:#000000;"&gt;si suddividono a loro volta in quelli di preparazione fondamentale e di preparazione specifica.&lt;br /&gt;I microcicli precompetitivi precedono le &lt;strong&gt;gare fondamentali&lt;/strong&gt; e sono caratterizzati da carichi con quantità ridotte e finalizzazioni specifiche.&lt;br /&gt;&lt;/span&gt;I &lt;strong&gt;&lt;span style="color:#3333ff;"&gt;microcicli di compensazione&lt;/span&gt;&lt;/strong&gt; &lt;span style="color:#000000;"&gt;devono avere carichi ridotti e sono inseriti tra &lt;strong&gt;due o tre&lt;/strong&gt; microcicli con carichi intensi.&lt;br /&gt;Il microciclo va considerato la &lt;strong&gt;struttura di base&lt;/strong&gt; dell’allenamento e nella sua costruzione vanno rispettati i principi della multilateralità, della continuità e della dinamica dei carichi, basandoci soprattutto sull’andamento &lt;strong&gt;ondulatorio&lt;/strong&gt; dei carichi.&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;"&gt;&lt;span style="color:#000000;"&gt;.&lt;br /&gt;Tra esercitazioni di diverso tipo vi dovrà inoltre essere sempre una giusta successione, in modo tale da rendere efficace al massimo il lavoro svolto. È bene tener presente che, in linea di massima, si deve inserire all’&lt;strong&gt;inizio&lt;/strong&gt; del microciclo allenamenti per la &lt;strong&gt;velocità&lt;/strong&gt;, per la &lt;strong&gt;tecnica&lt;/strong&gt; e per la &lt;strong&gt;tattica&lt;/strong&gt;, quindi allenamenti per la&lt;strong&gt; forza&lt;/strong&gt; ed infine quelli per la &lt;strong&gt;resistenza specifica&lt;/strong&gt; e &lt;strong&gt;generale&lt;/strong&gt;,&lt;/span&gt; &lt;strong&gt;&lt;span style="color:#cc0000;"&gt;anaerobica&lt;/span&gt;&lt;/strong&gt; &lt;span style="color:#000000;"&gt;ed&lt;/span&gt; &lt;strong&gt;&lt;span style="color:#ff0000;"&gt;aerobica&lt;/span&gt;&lt;/strong&gt;&lt;span style="color:#000000;"&gt;,&lt;/span&gt;&lt;span style="color:#000000;"&gt; questo sempre rispettando il criterio della &lt;strong&gt;prevalenza&lt;/strong&gt; e non quello della uniformità.&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ff9900;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:verdana;font-size:78%;color:#000000;"&gt;Grafici dell'andamento dei carichi&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-size:78%;"&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4322.jpg"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; CURSOR: hand" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4322.jpg" border="0" /&gt;&lt;/a&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4323.jpg"&gt;&lt;img style="FLOAT: right; MARGIN: 0px 0px 10px 10px; CURSOR: hand" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4323.jpg" border="0" /&gt;&lt;/a&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span 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style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#ffcc80;"&gt;..&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:100%;color:#000000;"&gt;* * *&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Verdana;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Verdana;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Verdana;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;Il &lt;span style="font-family:arial;color:#000099;"&gt;&lt;strong&gt;singolo allenamento&lt;/strong&gt;&lt;/span&gt; si compone di 3 parti:&lt;br /&gt;1) &lt;strong&gt;preparatoria&lt;/strong&gt;&lt;br /&gt;2) &lt;strong&gt;fondamentale&lt;br /&gt;&lt;/strong&gt;3) &lt;strong&gt;conclusiva&lt;br /&gt;&lt;/strong&gt;&lt;br /&gt;La parte &lt;strong&gt;preparatoria&lt;/strong&gt; è detta comunemente &lt;strong&gt;&lt;span style="color:#990000;"&gt;riscaldamento&lt;/span&gt;&lt;/strong&gt;; deve comprendere, oltre alla corsa lenta, esercizi ginnici, di mobilità, ecc. La durata sarà &lt;span style="color:#000000;"&gt;minimo&lt;/span&gt; di circa&lt;strong&gt; 20 minuti&lt;/strong&gt;; sarà più breve in allenamenti in cui si dedicherà più tempo alla parte fondamentale e più lunga e più ricca di contenuti per allenamenti in cui la parte fondamentale sarà più breve e molto intensa.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;span style="color:#ff9900;"&gt;.&lt;/span&gt;&lt;br /&gt;La parte &lt;strong&gt;fondamentale&lt;/strong&gt; avrà una durata che potrà variare da &lt;strong&gt;50 minuti&lt;/strong&gt; a &lt;strong&gt;2 ore&lt;/strong&gt; o più, naturalmente la durata deve tener conto dell’intensità dei carichi di lavoro ed è in funzione del periodo agonistico. In genere la parte fondamentale sarà finalizzata allo sviluppo delle qualità fisiche o della tecnica e della tattica. Per quanto riguarda le qualità fisiche in genere sarà bene finalizzare ulteriormente l’allenamento e non dedicare la stessa seduta allo sviluppo di tutte le qualità fisiche.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;span style="color:#ff9900;"&gt;.&lt;/span&gt;&lt;br /&gt;La parte &lt;strong&gt;conclusiva&lt;/strong&gt; (o &lt;span style="color:#cc0000;"&gt;&lt;strong&gt;defaticamento&lt;/strong&gt;&lt;/span&gt;) avrà durata di circa &lt;strong&gt;20 minuti&lt;/strong&gt; e dovrà mirare al ripristino dei normali ritmi biologici in modo graduale, nonché a recuperare il più possibile i debiti d’ossigeno eventualmente contatti. Potrà comprendere esercizi d’allungamento e di rilassamento, massaggi, ecc.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ff9900;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:78%;"&gt;&lt;strong&gt;&lt;span style="color:#000000;"&gt;Esempi di singole unità di allenamento&lt;/span&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4324.1.jpg"&gt;&lt;span style="color:#000000;"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; WIDTH: 363px; CURSOR: hand; HEIGHT: 383px" height="376" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4324.1.jpg" width="337" border="0" /&gt;&lt;/span&gt;&lt;/a&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4326.jpg"&gt;&lt;img style="FLOAT: right; MARGIN: 0px 0px 10px 10px; WIDTH: 376px; CURSOR: hand; HEIGHT: 399px" height="387" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4326.jpg" width="320" border="0" /&gt;&lt;/a&gt;&lt;br /&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:78%;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span 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Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:webdings;font-size:100%;color:#000000;"&gt;l l l&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:times new roman;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;font-size:100%;color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:times new roman;"&gt;&lt;strong&gt;&lt;span style="font-size:130%;color:#000099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:times new roman;"&gt;&lt;strong&gt;&lt;span style="font-size:130%;color:#000099;"&gt;IL PERIODO PREPARATORIO – ILPERIODO COMPETITIVO –&lt;br /&gt;IL PERIODO TRANSITORIO&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:130%;color:#000099;"&gt;__________________________&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;strong&gt;&lt;span style="font-size:130%;"&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;/span&gt;&lt;/strong&gt;&lt;br /&gt;&lt;br /&gt;Questi &lt;strong&gt;tre periodi&lt;/strong&gt; costituiscono la periodizzazione del ciclo che può essere &lt;strong&gt;annuale&lt;/strong&gt; o &lt;strong&gt;semestrale&lt;/strong&gt;.&lt;br /&gt;Il &lt;span style="color:#000099;"&gt;&lt;strong&gt;periodo preparatorio&lt;/strong&gt;&lt;/span&gt;, suddiviso in &lt;strong&gt;due tappe&lt;/strong&gt;, tenderà, nella prima, al raggiungimento della &lt;strong&gt;condizione&lt;/strong&gt; fisica e nella seconda della &lt;strong&gt;forma&lt;/strong&gt;.&lt;br /&gt;Nella &lt;strong&gt;&lt;span style="color:#3333ff;"&gt;prima tappa&lt;/span&gt;&lt;/strong&gt; l’allenamento sarà, quindi, generalizzato, privilegiando la &lt;strong&gt;resistenza organica aerobica&lt;/strong&gt;, la &lt;strong&gt;mobilità articolare&lt;/strong&gt;, la &lt;strong&gt;forza veloce&lt;/strong&gt;, a scapito della parte specialistica, in un rapporto che inizierà da &lt;strong&gt;4 a 1&lt;/strong&gt; per portarsi, al termine della tappa, sul &lt;strong&gt;2 a 1.&lt;br /&gt;&lt;/strong&gt;Nella &lt;strong&gt;&lt;span style="color:#3333ff;"&gt;seconda tappa&lt;/span&gt;&lt;/strong&gt; tale rapporto tenderà a capovolgersi, andando dal &lt;strong&gt;2 a 1&lt;/strong&gt; fino al &lt;strong&gt;1 a 2&lt;/strong&gt; ed in alcuni momenti al &lt;strong&gt;1 a 3&lt;/strong&gt;. Nella seconda tappa dovrà essere privilegiato &lt;strong&gt;l’allenamento anaerobico&lt;/strong&gt; e di tipo &lt;strong&gt;tecnico-tattico&lt;/strong&gt;, aumentando sempre di più la &lt;strong&gt;velocità&lt;/strong&gt; di esecuzione.&lt;br /&gt;Nel &lt;strong&gt;&lt;span style="color:#3333ff;"&gt;periodo competitivo&lt;/span&gt;&lt;/strong&gt; dovrà essere raggiunta la &lt;strong&gt;&lt;span style="color:#cc0000;"&gt;forma&lt;/span&gt;&lt;/strong&gt; e si dovrà cercare di mantenerla il più a lungo possibile. Dovremo,quindi, alternare i carichi tra &lt;strong&gt;aerobici e anaerobici&lt;/strong&gt;, variando le intensità &lt;strong&gt;(I)&lt;/strong&gt; e le quantità&lt;strong&gt; (Q)&lt;/strong&gt;, tenendo sempre presente che gli aspetti &lt;strong&gt;tecnico-tattici&lt;/strong&gt; sono fondamentali ed inserendo &lt;strong&gt;brevi tappe intermedie&lt;/strong&gt; per il ripristino organico e curando la parte &lt;strong&gt;psicologica&lt;/strong&gt;, in quanto un lungo periodo di competizioni può risultare stressante.&lt;br /&gt;Le &lt;strong&gt;gare&lt;/strong&gt; devono essere interpretate (ai fini della forma), come vere e proprie sedute d’allenamento alla &lt;strong&gt;massima&lt;/strong&gt; intensità.&lt;br /&gt;Il &lt;strong&gt;&lt;span style="color:#3333ff;"&gt;periodo transitorio&lt;/span&gt;&lt;/strong&gt; è quello che intercorre tra una stagione e l’altra, o quei periodi di interruzione prolungata di una stessa stagione agonistica. In tali periodi &lt;strong&gt;occorre evitare nel modo più assoluto&lt;/strong&gt; la totale interruzione dell’attività fisica, in quanto si produrrebbero danni psico-fisici ed un notevole disagio alla ripresa delle attività.&lt;/div&gt;&lt;div align="center"&gt;&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;* * *&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;br /&gt;Per concludere occorre ribadire la necessità dell’&lt;strong&gt;organizzazione dell’allenamento attraverso un’opportuna programmazione&lt;/strong&gt;. Di seguito riportiamo come esempio due rappresentazioni grafiche dell’andamento dei parametri del carico (quantità, intensità) relative ad una periodizzazione semestrale (fig. XXIII, XXIV).&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc80;"&gt;.&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc80;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4331.jpg"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; CURSOR: hand" height="400" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4331.jpg" width="355" border="0" /&gt;&lt;/a&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;A proposito dei due grafici occorre precisare che le cifre riportate in ordinata sono puramente convenzionali e servono solo ad una rapida visualizzazione del rapporto tra i valori della &lt;strong&gt;quantità (Q)&lt;/strong&gt; e dell’&lt;strong&gt;intensità (I).&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;La quantità del lavoro è al netto delle pause.&lt;br /&gt;L’intensità è espressa in punti (vedi tab. l, pag.).&lt;br /&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;La &lt;strong&gt;quantità&lt;/strong&gt; del lavoro &lt;strong&gt;Q&lt;/strong&gt; è data dalla somma delle quantità dei singoli esercizi (&lt;strong&gt;Q1 + Q2 + Q3 … Qn = Qa&lt;/strong&gt;, quantità di lavoro in un allenamento).&lt;br /&gt;L’i&lt;strong&gt;ntensità &lt;/strong&gt;del lavoro &lt;strong&gt;I&lt;/strong&gt; è data dalla somma stabilita in punti, in base ad una scala determinata dal numero delle &lt;strong&gt;pulsazioni &lt;/strong&gt;cardiache che, mediamente, si raggiungono negli esercizi. Quindi &lt;strong&gt;I1, I2, I3 … In&lt;/strong&gt; = intensità di ogni esercizio e Ima = intensità media di un allenamento.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:arial;color:#000099;"&gt;&lt;strong&gt;(Q1 · I1) + (Q2 · I2) + …(Qn · In)&lt;br /&gt;Ima = -----------------------------------------------&lt;br /&gt;Q1 + Q2 + …Qn&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;color:#000099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;I valori delle &lt;strong&gt;quantità&lt;/strong&gt; e dell’&lt;strong&gt;intensità&lt;/strong&gt; così determinati ci permettono di conoscere l’andamento di questi due parametri allenamento dopo allenamento, controllando i periodi non troppo lunghi (&lt;strong&gt;microcicli e mesocicli&lt;/strong&gt;) in modo tale da rispettare le scelte fatte.&lt;br /&gt;Se invece si vuol conoscere &lt;strong&gt;l’andamento medio&lt;/strong&gt; delle &lt;strong&gt;quantità&lt;/strong&gt; e delle &lt;strong&gt;intensità &lt;/strong&gt;per periodi di tempo più lunghi che i singoli allenamenti, si dovrà calcolarne i &lt;strong&gt;valori medi settimanali&lt;/strong&gt;. Quindi essendo: &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;strong&gt;Qa&lt;/strong&gt; = &lt;span style="color:#cc0000;"&gt;&lt;strong&gt;quantità di lavoro di un allenamento&lt;/strong&gt;&lt;/span&gt;&lt;br /&gt;&lt;span style="color:#cc0000;"&gt;&lt;strong&gt;&lt;span style="color:#000000;"&gt;Qg =&lt;/span&gt; quantità di lavoro giornaliero&lt;br /&gt;&lt;/strong&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;Qms =&lt;/strong&gt;&lt;/span&gt; &lt;strong&gt;quantità media settimanale&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;avremo:&lt;/span&gt; &lt;/div&gt;&lt;div align="center"&gt;&lt;br /&gt;&lt;span style="font-family:arial;"&gt;&lt;span style="color:#000099;"&gt;&lt;span style="font-family:arial;"&gt;&lt;strong&gt;Qg1 + Qg2 + …Qgn&lt;/strong&gt; &lt;/span&gt;&lt;br /&gt;&lt;/span&gt;&lt;strong&gt;&lt;span style="color:#000099;"&gt;Qms = ----------------------------------------&lt;br /&gt;n° allenamenti settiman.&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;color:#000099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;Ed essendo: &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ff9900;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;strong&gt;Ima&lt;/strong&gt; = &lt;strong&gt;intensità media di un allenamento&lt;br /&gt;Img = intensità media giornaliera&lt;br /&gt;Ims = intensità media settimanale&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ff9900;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;avremo:&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="color:#000099;"&gt;(Img1 · Qg1) + (Img2 · Qg2) + ... (Imgn · Qgn)&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="color:#000099;"&gt;Ims = --------------------------------------------------------------&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="color:#000099;"&gt;Qg1 + Qg2 + …Qgn&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="color:#000099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;color:#000000;"&gt;* * *&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:times new roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4332.jpg"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; CURSOR: hand" height="412" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4332.jpg" width="308" border="0" /&gt;&lt;/a&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Times New Roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;em&gt;&lt;span style="font-family:Times New Roman;color:#000000;"&gt;continua nel il libro parte 4...&lt;/span&gt;&lt;/em&gt;&lt;/div&gt;&lt;div class="blogger-post-footer"&gt;&lt;img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/22297760-113992180918578251?l=omarmagazinesport.blogspot.com' alt='' /&gt;&lt;/div&gt;</content><link rel='replies' type='application/atom+xml' href='http://omarmagazinesport.blogspot.com/feeds/113992180918578251/comments/default' title='Post Comments'/><link rel='replies' type='text/html' href='http://www.blogger.com/comment.g?blogID=22297760&amp;postID=113992180918578251' title='0 Comments'/><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/22297760/posts/default/113992180918578251'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/22297760/posts/default/113992180918578251'/><link rel='alternate' type='text/html' href='http://omarmagazinesport.blogspot.com/2006/02/sport-il-libro-parte-3-da-la.html' title='SPORT - Il Libro - parte 3. (Da La Periodizzazione dell&apos; Allenamento a Il Periodo Preparatorio - Competitivo - Transitorio'/><author><name>Omar</name><uri>http://www.blogger.com/profile/00706607423468173707</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='32' height='24' src='http://4.bp.blogspot.com/_jgm8E7gW3QY/SvFNV2vhhQI/AAAAAAAABck/uHSQBKPWnfo/S220/io+duna+45.jpg'/></author><thr:total>0</thr:total></entry><entry><id>tag:blogger.com,1999:blog-22297760.post-113992199611792224</id><published>2006-02-08T04:58:00.000-08:00</published><updated>2006-02-14T05:21:01.630-08:00</updated><title type='text'>SPORT - Il Libro - parte 4. (Da Psicologia. Come migliorare le aspettative... , a Test IRI. - FINE)</title><content type='html'>&lt;div align="center"&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#ffcc33;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt; &lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#ffcc33;"&gt;&lt;strong&gt;.&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:180%;color:#cc0000;"&gt;&lt;strong&gt;PSICOLOGIA. COME MIGLIORARE LE ASPETTATIVE DI EFFICACIA&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;________________________________________&lt;br /&gt;&lt;br /&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;Uno dei fattori che influenza la prestazione è la fiducia che l’atleta ripone nelle proprie capacità di affrontare una specifica situazione competitiva. Le &lt;strong&gt;aspettative di efficacia&lt;/strong&gt; – concetto introdotto da Bandura (1977) con il nome di &lt;strong&gt;self efficacy&lt;/strong&gt; – sono una forma particolare di &lt;strong&gt;autostima&lt;/strong&gt; e consistono nel sentirsi, hic et nunc, capaci di eseguire bene un determinato compito, di prendere decisioni giuste (decision taking), di cavarsela davanti a qualunque problema (problem solving), di fronteggiare con successo potenziali avversità (coping), di gestire con obiettività le cosiddette attribuzioni di casualità (interna o esterna).&lt;br /&gt;In tutte le attività umane ciascuno conosce i propri limiti e agisce con disinvoltura e sicurezza entro quegli ambiti, mentre evita le azioni giudicate fuori dalla sua portata. Così fa lo sportivo con i suoi gesti atletici.&lt;br /&gt;Uno degli scopi dell’allenamento è proprio il progressivo &lt;strong&gt;arricchimento &lt;/strong&gt;dell’efficacia. Ciò può avvenire attraverso varie tecniche, o meglio, fonti d’informazione:&lt;br /&gt;&lt;strong&gt;realizzazione di prestazioni&lt;/strong&gt;, cioè la capacità di centrare un obiettivo anche solo poche volte può avviare il processo di aspettativa di efficacia, cioè la consapevolezza di riuscire a farlo.&lt;br /&gt;&lt;strong&gt;Esperienze sostitutive&lt;/strong&gt;: il confronto sociale è importante, vedere altri che riescono nell’esecuzione di una certa attività può convincere che ne è capace anche chi osserva (modeling).&lt;br /&gt;&lt;strong&gt;Persuasione&lt;/strong&gt;: incoraggiamenti verbali da parte dell’allenatore (dai, ce la puoi fare), o gratificazioni (bravo, forte!), possono convincere l’atleta attraverso la suggestione di potersi impegnare con successo. La persuasione verbale è valida se mantenuta entro certi limiti realistici e se fatta propria dall’atleta che deve imparare a ripetersi da se (self talk) incoraggiamenti ed approvazioni anche a livello di solo pensiero.&lt;br /&gt;&lt;strong&gt;Arousal emozionale&lt;/strong&gt;: un soggetto si sente più sicuro delle proprie capacità quando non è troppo teso e agitato. Ansia, paura, rabbia derivano dalla percezione del divario tra potenziali avversità (per esempio avversario troppo forte) e le proprie capacità a farvi fronte. Incrementando la&lt;strong&gt; self efficacy&lt;/strong&gt;, eventi che inizialmente intimidivano non provocano più stati di tensione.&lt;br /&gt;&lt;strong&gt;Attribuzione di casualità:&lt;/strong&gt; un elemento fondamentale della &lt;strong&gt;self efficacy&lt;/strong&gt; è l’attribuzione delle cause. Questa teoria (locus of control) è il modo in cui gli individui valutano i propri risultati in termini di casualità e l’influenza che tali valutazioni hanno sulle reazioni emotive e sui comportamenti successivi. Si può attribuire una sconfitta a fattori interni (scarso impegno, troppi errori), o esterni (sfortuna, errori arbitrali, avversario scorretto o troppo forte).&lt;br /&gt;In genere le prestazioni buone si ripetono – &lt;strong&gt;una tira l’altra&lt;/strong&gt; – anche per l’effetto &lt;strong&gt;euforizzante&lt;/strong&gt; che, appunto, conferma l’efficacia. Però bisogna sempre aspettarsi il periodo nero del &lt;strong&gt;slamp&lt;/strong&gt; (calo atletico) per &lt;strong&gt;cessazione dello stato di forma&lt;/strong&gt;, con l’inevitabile messa in crisi della self efficacy. È opportuno incentivare al massimo le tecniche di &lt;strong&gt;rafforzamento &lt;/strong&gt;della &lt;strong&gt;self efficacy&lt;/strong&gt; nei periodi di forma, perché la stabilità dei risultati è, di per se, un altro importante fattore di incremento dell’efficacia.&lt;br /&gt;&lt;br /&gt;Abitualmente le vittorie si attribuiscono ai propri meriti e le &lt;strong&gt;sconfitte a fattori esterni&lt;/strong&gt;, ma questa non è la strada giusta perché esclude l’&lt;strong&gt;autocritica&lt;/strong&gt;. Le emozioni positive (per la vittoria) e negative (per la sconfitta), vanno opportunamente &lt;strong&gt;gestite&lt;/strong&gt; per farne comunque tesoro.&lt;br /&gt;L’attribuzione di casualità interna è una regola preziosa del &lt;strong&gt;mental training&lt;/strong&gt;. Talvolta &lt;strong&gt;riconoscere&lt;/strong&gt; di aver sbagliato una gara risulta molto utile a quel continuo processo di crescita che è lo svolgere un’attività atletica. Così come è bene ricordare le prestazioni migliori per cercare di ripeterle, è bene ricordare le peggiori per&lt;strong&gt; non&lt;/strong&gt; commettere più gli stessi errori. Oltretutto il termine &lt;strong&gt;locus of control&lt;/strong&gt; è chiaro: se il locus è interno è possibile controllarlo, se è solo esterno, non resterebbero che gli scongiuri.&lt;/span&gt;&lt;/div&gt;&lt;span style="font-family:times new roman;color:#000000;"&gt;&lt;div align="right"&gt;&lt;br /&gt;&lt;span style="font-size:78%;"&gt;Fonte: “SPORT E MEDICINA” Mag. Giu. 1994&lt;/span&gt; &lt;/div&gt;&lt;div align="right"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:webdings;"&gt;l l l &lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Webdings;"&gt;&lt;/span&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;span style="font-family:Webdings;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#000099;"&gt;&lt;strong&gt;L’ALIMENTAZIONE PER L’ATLETA&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#000000;"&gt;____________________&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#000099;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;&lt;span style="color:#000000;"&gt;Una corretta alimentazione è presupposto indispensabile per affrontare nel migliore dei modi gare e allenamenti; è infatti la “benzina” che dà potenza al motore umano e ne migliora il rendimento, cioè il carburante che se scelto oculatamente, permette di far brillare al massimo le capacità.&lt;br /&gt;Una corrette alimentazione deve essere composta per il&lt;/span&gt; &lt;strong&gt;&lt;span style="color:#990000;"&gt;60%&lt;/span&gt;&lt;/strong&gt; &lt;span style="color:#000000;"&gt;da carboidrati (pane, pasta, riso o cereali), per il&lt;/span&gt; &lt;span style="color:#990000;"&gt;&lt;strong&gt;25%&lt;/strong&gt;&lt;/span&gt; ÷ &lt;span style="color:#990000;"&gt;&lt;strong&gt;30%&lt;/strong&gt;&lt;/span&gt; &lt;span style="color:#000000;"&gt;dai grassi (formaggi, latte, burro) e per il restante&lt;/span&gt; &lt;span style="color:#990000;"&gt;&lt;strong&gt;10%&lt;/strong&gt;&lt;/span&gt; ÷&lt;span style="color:#990000;"&gt;&lt;strong&gt; 15%&lt;/strong&gt;&lt;/span&gt; &lt;span style="color:#000000;"&gt;da proteine (pesce, uova, carne).&lt;br /&gt;&lt;/span&gt;&lt;span style="color:#000000;"&gt;Naturalmente tali percentuali possono lievemente variare a seconda degli sport praticati.&lt;/span&gt;&lt;br /&gt;&lt;span style="color:#000000;"&gt;Abbiamo visto come nelle cellule l’energia venga immagazzinata sotto forma di &lt;strong&gt;ATP&lt;/strong&gt; e come questi deve essere costantemente resintetizzato; è un processo graduale che ha luogo soprattutto nelle centrali energetiche delle cellule, i mitocondri.&lt;br /&gt;Quindi occorre rifornire l’organismo con le giuste qualità e quantità di nutrienti. Le tabelle che seguono sono un esempio di corrette alimentazione per atleti di varie discipline sportive&lt;/span&gt;.&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;tab. o&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:arial;color:#000000;"&gt;-----------------------------------------------------------------&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;span style="font-family:arial;"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;CONSUMO DI CALORIE&lt;/strong&gt; &lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;span style="font-family:arial;color:#000000;"&gt;-----------------------------------------------------------------&lt;br /&gt;Attività &lt;span style="color:#ffcc33;"&gt;....................................&lt;/span&gt;Kcal./ora &lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:arial;"&gt;-----------------------------------------------------------------&lt;br /&gt;&lt;span style="color:#3333ff;"&gt;Calcio&lt;/span&gt; &lt;span style="color:#ffcc33;"&gt;........................................&lt;/span&gt; &lt;/span&gt;&lt;span style="font-family:arial;"&gt;&lt;span style="color:#3333ff;"&gt;500&lt;br /&gt;&lt;/span&gt;&lt;span style="color:#000000;"&gt;&lt;span style="color:#cc0000;"&gt;Canottaggio&lt;/span&gt; &lt;span style="color:#ffcc33;"&gt;.................................&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style="font-family:arial;"&gt;&lt;span style="color:#cc0000;"&gt;500&lt;br /&gt;&lt;/span&gt;Ciclismo &lt;span style="color:#ffcc33;"&gt;.....................................&lt;/span&gt;380&lt;br /&gt;Corsa &lt;span style="color:#ffcc33;"&gt;..........................................&lt;/span&gt;&lt;/span&gt;&lt;span style="font-family:arial;"&gt;&lt;span style="color:#006600;"&gt;600&lt;br /&gt;&lt;/span&gt;&lt;span style="color:#3333ff;"&gt;Ginnastica aerobica&lt;/span&gt; &lt;span style="color:#ffcc33;"&gt;.....................&lt;/span&gt;&lt;/span&gt;&lt;span style="font-family:arial;"&gt;&lt;span style="color:#3333ff;"&gt;400&lt;br /&gt;&lt;/span&gt;Nuoto &lt;span style="color:#ffcc33;"&gt;.........................................&lt;/span&gt;330&lt;br /&gt;&lt;span style="color:#cc0000;"&gt;Pallacanestro&lt;/span&gt; &lt;span style="color:#ffcc33;"&gt;..............................&lt;/span&gt;6&lt;span style="color:#cc0000;"&gt;00&lt;/span&gt;&lt;br /&gt;&lt;span style="color:#993399;"&gt;Pallavolo&lt;/span&gt; &lt;span style="color:#ffcc33;"&gt;.....................................&lt;/span&gt;&lt;/span&gt;&lt;span style="font-family:arial;"&gt;&lt;span style="color:#cc33cc;"&gt;400&lt;br /&gt;&lt;/span&gt;Pattinaggio &lt;span style="color:#ffcc33;"&gt;.................................&lt;/span&gt;380&lt;br /&gt;&lt;span style="color:#330099;"&gt;Tennis&lt;/span&gt; &lt;span style="color:#ffcc33;"&gt;........................................&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style="font-family:arial;color:#330099;"&gt;360&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;span style="font-family:arial;color:#000000;"&gt;---------------------------------------------------------------- &lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;p&gt;&lt;span style="color:#ffcc33;"&gt;&lt;span style="font-family:arial;color:#000000;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span style="color:#ffcc33;"&gt;&lt;span style="font-family:arial;color:#000000;"&gt;&lt;/p&gt;&lt;div align="justify"&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4333.jpg"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; CURSOR: hand" height="421" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4333.jpg" width="322" border="0" /&gt;&lt;/span&gt;&lt;/a&gt;&lt;span style="color:#ffcc33;"&gt; .&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;br /&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;br /&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4334.jpg"&gt;&lt;img style="FLOAT: right; MARGIN: 0px 0px 10px 10px; CURSOR: hand" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4334.jpg" border="0" /&gt;&lt;/a&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div 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style="font-family:Arial;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;font-size:78%;color:#ffcc33;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:arial;color:#000000;"&gt;&lt;strong&gt;N.B: le tabelle sono puramente esemplificative e non esaustive. È da tener presente che la DIETA MEDITERRANEA è completa. Basta aver presente una qualsiasi PIRAMIDE NUTRIZIONALE che ha per base questa dieta (esempio: alla base cereali, patate riso; al centro legumi, verdure e frutta; ai vertici carne, grassi, latticini, uova - dove la base rappresenta il quotidiano e il vertice la moderazione -). È da tener presente, ad esempio, che 100 gr di pasta forniscono 350 calorie e se condita con pomodoro e un cucchiaino d’olio d’oliva se ne devono aggiungere altre 90 e se si mette il parmigiano grattugiato un’altra quarantina. La carne rossa è bene limitarla ad una volta a settimana, due / tre se si fanno sport di potenza.&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:Arial;color:#ffcc33;"&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:webdings;"&gt;l l l &lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:times new roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#000099;"&gt;&lt;strong&gt;L’IMPORTANZA DI BERE&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#000000;"&gt;_________________&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;&lt;span style="color:#000000;"&gt;Così come l’alimentazione, anche il bere ha la sua fondamentale importanza per l’atleta.&lt;br /&gt;Abbiamo visto come il lavoro muscolare sia esotermico, cioè produca calore interno; questo fa si che durante un prolungato sforzo fisico &lt;strong&gt;aumenta &lt;/strong&gt;sensibilmente la &lt;strong&gt;temperatura corporea&lt;/strong&gt;: questo fa scattare tutti i meccanismi di regolazione della stessa temperatura corporea, di cui il più importante è la sudorazione. Si ha quindi, in determinate condizioni, un’importante perdita di liquidi e, insieme ad essi, di &lt;strong&gt;sali minerali&lt;/strong&gt;, che sono essenziali alle funzioni dell’organismo, come il &lt;strong&gt;potassio&lt;/strong&gt;, il &lt;strong&gt;sodio&lt;/strong&gt;, il &lt;strong&gt;magnesio&lt;/strong&gt;, in quanto sotto forma di &lt;strong&gt;&lt;span style="color:#000099;"&gt;ioni&lt;/span&gt; &lt;/strong&gt;funzionano da trasportatori dell’energia. Il non reintegrare prontamente questi minerali può produrre effetti come la comparsa di &lt;strong&gt;crampi&lt;/strong&gt;, perdita della lucidità, &lt;strong&gt;affaticamento&lt;/strong&gt;. Soprattutto quando il clima è molto caldo, ma è comunque sempre buona norma, occorre quindi bere ogni &lt;strong&gt;15 &lt;/strong&gt;minuti circa, a &lt;strong&gt;&lt;span style="color:#3333ff;"&gt;piccoli sorsi&lt;/span&gt;&lt;/strong&gt;, possibilmente una bevanda &lt;strong&gt;iposodica &lt;/strong&gt;(troppi sali disciolti possono produrre sgraditi problemi intestinali), o acqua oligominerale.&lt;br /&gt;Un’altra buona norma, specie per le gare della durata &lt;strong&gt;sopra l’ora&lt;/strong&gt;, è quella che in gergo viene definita “&lt;span style="color:#cc0000;"&gt;&lt;strong&gt;cammellaggio&lt;/strong&gt;&lt;/span&gt;”, cioè bere, partendo da &lt;strong&gt;un’ora prima della gara, fino a mezz’ora prima&lt;/strong&gt;, a piccoli sorsi, un litro d’acqua o di bevande ipotoniche.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Webdings;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Webdings;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:webdings;"&gt;l l l &lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#000099;"&gt;&lt;strong&gt;I DOLORI MUSCOLARI DOPO UNO SFORZO&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#000000;"&gt;_______________________&lt;/span&gt;&lt;/div&gt;&lt;span style="color:#000000;"&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;br /&gt;.&lt;br /&gt;.&lt;br /&gt;&lt;/span&gt;A tutti è capitato di provare i dolori del “giorno dopo”. Chi inizia uno sport, o per chi riprende l’attività dopo una lunga pausa, nelle &lt;strong&gt;24, 48&lt;/strong&gt; ore successive, i muscoli sono gonfi, duri, irrigiditi, doloranti. In genere si &lt;strong&gt;attribuisce&lt;/strong&gt; la colpa all’acido lattico che invece è del tutto &lt;strong&gt;innocente&lt;/strong&gt;, in quanto questo sottoprodotto di un intenso sforzo fisico viene completamente eliminato dall’organismo nel giro di poche ore dallo sforzo stesso.&lt;br /&gt;Il dolore invece è determinato da &lt;strong&gt;&lt;span style="color:#3333ff;"&gt;microlesioni&lt;/span&gt;&lt;/strong&gt; che si producono nelle fibre muscolari sottoposte ad uno sforzo al quale non sono abituate. Infatti al microscopio si vedono fibre muscolari gonfie, lesionate in alcuni punti, in altri quasi degenerate.&lt;br /&gt;Inoltre nel sangue si scoprono, in concentrazioni nettamente superiori alla norma, sostanze come la &lt;strong&gt;mioglobina &lt;/strong&gt;ed &lt;strong&gt;enzimi &lt;/strong&gt;come &lt;strong&gt;CpK&lt;/strong&gt; o &lt;strong&gt;Ldh&lt;/strong&gt; che sono fuoriusciti dalle cellule muscolari.&lt;br /&gt;Per quanto riguarda i rimedi, se non si fa niente il dolore è destinato a &lt;strong&gt;scomparire&lt;/strong&gt; nel giro di &lt;strong&gt;3, 4 giorni&lt;/strong&gt;. Le fibre più danneggiate vengono svuotate e &lt;strong&gt;ricostruite&lt;/strong&gt; aminoacido su aminoacido, come prima, &lt;strong&gt;o meglio&lt;/strong&gt;, più adatte a sopportare il tipo di sforzo che ha prodotto il trauma.&lt;br /&gt;Nonostante questo si può ridurre la portata e la durata del dolore: alcuni ricercatori californiani indicano che ci si può proteggere assumendo prima dello sforzo abbondanti dosi di vitamina E e C; dopo lo sforzo, subito dopo la seduta e nei giorni successivi è utile fare attività fisica blanda, come corse lente e stretching.&lt;br /&gt;Alla sera si è dimostrato utile l’assunzione di aspirina. Utili anche i massaggi, ma solo se praticati da esperti e gli idromassaggi. &lt;/div&gt;&lt;div align="right"&gt;&lt;br /&gt;&lt;span style="font-size:78%;"&gt;Fonte: “LA GAZZETTA DELLO SPORT”&lt;br /&gt;Dr. Enrico Arcelli&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:webdings;font-size:100%;"&gt;&lt;span style="font-family:verdana;"&gt;* * *&lt;/span&gt; &lt;/span&gt;&lt;/div&gt;&lt;span style="font-family:Webdings;font-size:100%;"&gt;&lt;/span&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;Il fenomeno del &lt;strong&gt;dolore muscolare&lt;/strong&gt; dopo uno sforzo fisico è tipico di quelle attività in cui si verificano &lt;strong&gt;&lt;span style="color:#000099;"&gt;contrazioni in allungamento &lt;/span&gt;&lt;/strong&gt;del muscolo (utilizzo della&lt;strong&gt; forza eccentrica&lt;/strong&gt;), più che nelle attività in cui si verificano contrazioni in &lt;strong&gt;&lt;span style="color:#000099;"&gt;accorciamento&lt;/span&gt;&lt;/strong&gt; (&lt;strong&gt;forza concentrica&lt;/strong&gt;).&lt;br /&gt;Nella &lt;strong&gt;bicicletta&lt;/strong&gt; la forza è solo di tipo &lt;strong&gt;concentrico&lt;/strong&gt;, mentre nella &lt;strong&gt;corsa&lt;/strong&gt; verranno utilizzate &lt;strong&gt;entrambe&lt;/strong&gt;: quella concentrica nella fase di spinta (i muscoli si &lt;strong&gt;accorciano&lt;/strong&gt;) e quella eccentrica nella fase di atterraggio – dopo la fase aerea, in cui entrambi i piedi non toccano il suolo – (i muscoli si &lt;strong&gt;allungano&lt;/strong&gt;). Per questo si potrà avverare di avvertire molto più dolore dopo una corsa in &lt;strong&gt;discesa&lt;/strong&gt; che non in salita.&lt;br /&gt;Terapie per alleviare il dolore possono essere il ricorso a sedute di &lt;strong&gt;10, 15 minuti di stretching&lt;/strong&gt;, soprattutto prima della comparsa vera e propria dei dolori e, comunque, per tutta la durata di questi. Può essere utile prendere un’&lt;strong&gt;aspirina &lt;/strong&gt;durante i pasti. Sono da &lt;strong&gt;evitare i massaggi&lt;/strong&gt; fatti in casa, questi sono utili solo se fatti da esperti. Comunque il dolore, che compare qualche ora dopo lo sforzo (ad esempio la mattina dopo) e raggiunge il massimo nelle&lt;strong&gt; 48&lt;/strong&gt; ore successive, scompare dopo &lt;strong&gt;3 o 4 giorni. &lt;/strong&gt;&lt;/div&gt;&lt;strong&gt;&lt;div align="right"&gt;&lt;br /&gt;&lt;/strong&gt;&lt;span style="font-size:78%;"&gt;Fonte: “LA GAZZETTA DELLO SPORT”&lt;br /&gt;Dr. Alex Castagna&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:webdings;font-size:100%;"&gt;l l l &lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;br /&gt;&lt;br /&gt;&lt;span style="font-family:verdana;font-size:130%;color:#000099;"&gt;&lt;strong&gt;TEST CONCONI&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="font-family:Verdana;font-size:130%;"&gt;___________&lt;/span&gt;&lt;br /&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;br /&gt;&lt;/span&gt;&lt;span style="color:#000000;"&gt;Il &lt;strong&gt;test &lt;/strong&gt;serve ad individuare la &lt;strong&gt;potenza aerobica&lt;/strong&gt; che corrisponde al valore della &lt;strong&gt;soglia anaerobica&lt;/strong&gt;.&lt;br /&gt;Il protocollo di indagine del test prevede una prova da &lt;strong&gt;sforzo&lt;/strong&gt; incrementabile di tipo &lt;strong&gt;massimale&lt;/strong&gt; che mette in relazione la &lt;strong&gt;frequenza cardiaca&lt;/strong&gt; (&lt;strong&gt;&lt;span style="color:#cc0000;"&gt;F.C&lt;/span&gt;&lt;/strong&gt;.) con la &lt;strong&gt;velocità&lt;/strong&gt; dell’atleta ed indica la &lt;strong&gt;soglia anaerobica&lt;/strong&gt; della&lt;strong&gt; &lt;span style="color:#cc0000;"&gt;F.C&lt;/span&gt;&lt;/strong&gt;., o della velocità, nel punto in cui si perde la &lt;strong&gt;relazione lineare&lt;/strong&gt; tra i due parametri.&lt;br /&gt;Per eseguirlo su di un podista occorrono una pista di atletica ed un &lt;strong&gt;cardiofrequensimetro&lt;/strong&gt;. Dopo &lt;strong&gt;10, 15&lt;/strong&gt; minuti di riscaldamento si percorrono&lt;strong&gt; 10 ÷ 15&lt;/strong&gt; giri di pista a ritmo crescente (ideale sarebbe incrementare la velocità in modo da aumentare la &lt;strong&gt;F.C.&lt;/strong&gt; di &lt;strong&gt;5, 6 battiti &lt;/strong&gt;a giro) fino a raggiungere la velocità massima nel momento dell’esaurimento fisico.&lt;br /&gt;Ogni &lt;strong&gt;100 ÷ 200&lt;/strong&gt; metri vengono registrati la &lt;strong&gt;F.C.&lt;/strong&gt; ed i tempi parziali (per stabilire la velocità) e si traduce il tutto in un grafico come nell’esempio della fig. XXV.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4335.jpg"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; WIDTH: 404px; CURSOR: hand; HEIGHT: 240px" height="249" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4335.jpg" width="411" border="0" /&gt;&lt;/a&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:webdings;"&gt;l l l &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:verdana;font-size:130%;color:#000099;"&gt;TEST DI COOPER&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#000000;"&gt;___________&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;br /&gt;.&lt;/span&gt;&lt;br /&gt;&lt;br /&gt;&lt;span style="color:#000000;"&gt;Il test serve ad individuare lo stato di forma generale. Per eseguirlo occorre correre per 12 minuti consecutivi, preferibilmente su di una pista d’atletica, o in alternativa su di un tracciato ben marcato nelle distanze, in modo da poter rilevare i metri che si sono percorsi alla fine dei 12 minuti.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4337.jpg"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; CURSOR: hand" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4337.jpg" border="0" /&gt;&lt;/a&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;..&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:webdings;color:#000000;"&gt;l l l&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:times new roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#ffcc33;"&gt;. &lt;/span&gt;&lt;/div&gt;&lt;span style="color:#ffcc33;"&gt;&lt;div align="center"&gt;&lt;br /&gt;&lt;/span&gt;&lt;span style="font-size:130%;"&gt;&lt;span style="font-family:verdana;"&gt;&lt;strong&gt;&lt;span style="color:#000000;"&gt;&lt;span style="color:#000099;"&gt;TEST PER LA RESISTENZA ANAEROBICA LATTACIDA&lt;br /&gt;(DEI 300 METRI&lt;/span&gt;&lt;/span&gt;&lt;span style="color:#000099;"&gt;)&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#000000;"&gt;_____________&lt;/span&gt;&lt;/div&gt;&lt;span style="color:#000000;"&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;br /&gt;Per eseguirlo occorre correre i &lt;strong&gt;300 metri&lt;/strong&gt; con partenza da &lt;strong&gt;fermo&lt;/strong&gt;. Lo sforzo deve essere di tipo &lt;strong&gt;massimale&lt;/strong&gt;. È preferibile eseguirlo su di una pista d’atletica, o comunque su di una superficie piana e compatta ben misurata.&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4338.jpg"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; CURSOR: hand" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4338.jpg" border="0" /&gt;&lt;/a&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:webdings;color:#000000;"&gt;l l l&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:times new roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;strong&gt;&lt;span style="font-family:verdana;font-size:130%;color:#000099;"&gt;TEST PER LA RESISTENZA ANAEROBICA ALATTACIDA&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#000000;"&gt;________________________&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;br /&gt;&lt;span style="font-size:130%;color:#3333ff;"&gt;&lt;strong&gt;DEI 30 METRI&lt;span style="color:#000000;"&gt;:&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;br /&gt;&lt;br /&gt;&lt;span style="color:#000000;"&gt;È indicato per valutare la &lt;strong&gt;forza esplosiva&lt;/strong&gt;. Si esegue con &lt;strong&gt;partenza da fermo&lt;/strong&gt;. È consigliabile utilizzare una pista d’atletica. Si possono eseguire &lt;strong&gt;3 prove&lt;/strong&gt; e poi fare la&lt;strong&gt; media&lt;/strong&gt;; in questo caso occorrono dai&lt;strong&gt; 5 ai 6 minuti&lt;/strong&gt; di recupero tra le prove; oppure una prova da fermo ed una lanciata, quindi fare la media.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;span style="font-size:130%;color:#000000;"&gt;&lt;strong&gt;&lt;span style="color:#3333ff;"&gt;DEI 60 METRI&lt;/span&gt;:&lt;/strong&gt;&lt;/span&gt;&lt;br /&gt;&lt;br /&gt;&lt;/span&gt;&lt;span style="color:#000000;"&gt;È il più utilizzato per la valutazione della potenza anaerobica &lt;strong&gt;alattacida&lt;/strong&gt;. Si esegue con partenza da fermo. Il test dovrebbe essere svolto su di una pista d’atletica o su di una superficie compatta e ben misurata. Possono essere eseguite &lt;strong&gt;più prove&lt;/strong&gt; e poi fare la media, in questo caso occorrono dai &lt;strong&gt;5 ai 6 minuti&lt;/strong&gt; di recupero tra le prove. &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt; &lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4339.jpg"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; CURSOR: hand" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4339.jpg" border="0" /&gt;&lt;/a&gt;&lt;br /&gt;&lt;/div&gt;&lt;/span&gt;&lt;/span&gt;&lt;div align="center"&gt;&lt;span style="font-family:Webdings;"&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4340.jpg"&gt;&lt;img style="FLOAT: right; MARGIN: 0px 0px 10px 10px; CURSOR: hand" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4340.jpg" border="0" /&gt;&lt;/a&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Webdings;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:times new roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Webdings;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Webdings;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Webdings;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="color:#3333ff;"&gt;&lt;span style="font-size:130%;"&gt;SALTO TRIPLO&lt;span style="color:#000000;"&gt;:&lt;/span&gt;&lt;/span&gt;&lt;br /&gt;&lt;/span&gt;&lt;/strong&gt;&lt;br /&gt;&lt;span style="color:#000000;"&gt;Si esegue da fermo. È un test di valutazione della potenza anaerobica alattacida riferito soprattutto agli arti inferiori. Si esegue facendo 3 salti consecutivi a piedi uniti e nudi. È preferibile eseguirlo su di una pista d’atletica. &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4341.jpg"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; CURSOR: hand" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4341.jpg" border="0" /&gt;&lt;/a&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:webdings;color:#000000;"&gt;l l l&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;br /&gt;&lt;span style="font-family:verdana;font-size:130%;color:#000099;"&gt;&lt;strong&gt;TEST I.R.I. (Indice di Recupero Immediato)&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#000000;"&gt;___________________&lt;/span&gt;&lt;/div&gt;&lt;span style="color:#000000;"&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;br /&gt;&lt;/span&gt;&lt;span style="color:#000000;"&gt;Si effettua salendo e scendendo da uno &lt;strong&gt;scalino alto 50 cm.&lt;/strong&gt; (40 per le donne, 30 per i ragazzi) per &lt;strong&gt;30 volte&lt;/strong&gt; in &lt;strong&gt;un minuto&lt;/strong&gt; per &lt;strong&gt;3 minuti consecutivi&lt;/strong&gt;. Alla fine dell’esercizio si recupera &lt;strong&gt;1 minuto&lt;/strong&gt;, poi si contano i battiti cardiaci per &lt;strong&gt;30 secondi&lt;/strong&gt;. Ad ogni numero di pulsazioni corrisponde un punteggio (vedi tab. z). Il punteggio indica lo stato di efficienza fisica (formula I.R.I. secondo il protocollo semplificato &lt;strong&gt;Montone&lt;/strong&gt;: &lt;strong&gt;&lt;span style="color:#000099;"&gt;5,5 x pulsazioni dal 60° al 90° secondo&lt;/span&gt;&lt;/strong&gt;). &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4342.jpg"&gt;&lt;span style="color:#ffcc33;"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; CURSOR: hand" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4342.jpg" border="0" /&gt;&lt;/span&gt;&lt;/a&gt;&lt;/span&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="right"&gt;Fonte: “LA GAZZETTA DELLO SPORTIVO”&lt;br /&gt;Dr. Alex Castagna&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:webdings;color:#663366;"&gt;2&lt;span style="color:#3333ff;"&gt;2&lt;/span&gt;2&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:times new roman;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Webdings;color:#663366;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:verdana;font-size:130%;color:#000000;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;p&gt;&lt;/span&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/Copia%20di%20assetati46.0.jpg"&gt;&lt;img style="FLOAT: right; MARGIN: 0px 0px 10px 10px; CURSOR: hand" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/Copia%20di%20assetati46.0.jpg" border="0" /&gt;&lt;/a&gt;&lt;br /&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;br /&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;br /&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;br /&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;br /&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;br /&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;br /&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;br /&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;br /&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;br /&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;br /&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;br /&gt;&lt;strong&gt;&lt;span style="font-family:times new roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;br /&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;br /&gt;&lt;strong&gt;&lt;span style="font-family:Times New Roman;font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/strong&gt;&lt;br /&gt;&lt;br /&gt;&lt;strong&gt;&lt;span style="font-family:Verdana;font-size:130%;color:#000000;"&gt;FINE.&lt;/span&gt;&lt;/strong&gt; &lt;/p&gt;&lt;p&gt;&lt;/p&gt;&lt;p&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span style="color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/p&gt;&lt;div class="blogger-post-footer"&gt;&lt;img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/22297760-113992199611792224?l=omarmagazinesport.blogspot.com' alt='' /&gt;&lt;/div&gt;</content><link rel='replies' type='application/atom+xml' href='http://omarmagazinesport.blogspot.com/feeds/113992199611792224/comments/default' title='Post Comments'/><link rel='replies' type='text/html' href='http://www.blogger.com/comment.g?blogID=22297760&amp;postID=113992199611792224' title='0 Comments'/><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/22297760/posts/default/113992199611792224'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/22297760/posts/default/113992199611792224'/><link rel='alternate' type='text/html' href='http://omarmagazinesport.blogspot.com/2006/02/sport-il-libro-parte-4-da-psicologia.html' title='SPORT - Il Libro - parte 4. (Da Psicologia. Come migliorare le aspettative... , a Test IRI. - FINE)'/><author><name>Omar</name><uri>http://www.blogger.com/profile/00706607423468173707</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='32' height='24' src='http://4.bp.blogspot.com/_jgm8E7gW3QY/SvFNV2vhhQI/AAAAAAAABck/uHSQBKPWnfo/S220/io+duna+45.jpg'/></author><thr:total>0</thr:total></entry><entry><id>tag:blogger.com,1999:blog-22297760.post-114000893940283798</id><published>2006-02-07T04:51:00.000-08:00</published><updated>2006-02-17T05:32:37.936-08:00</updated><title type='text'>ALIMENTAZIONE - 1. Metabolismo e Insulina - Alimentazione pre gara</title><content type='html'>&lt;div align="justify"&gt;&lt;span style="font-size:130%;color:#000099;"&gt;&lt;strong&gt;METABOLISMO&lt;/strong&gt;:&lt;/span&gt;&lt;br /&gt;&lt;span style="color:#000000;"&gt;che cos'è il metabolismo?&lt;br /&gt;Tutti i processi dell’organismo che richiedono produzione, consumo o accumulo di energia e che ci mantengono in vita sono detti nel loro complesso metabolismo, quando i processi metabolici si arrestano, il corpo muore.&lt;br /&gt;Il metabolismo si può suddividere e in anabolismo e catabolismo.&lt;br /&gt;L’anabolismo comprende tutti i processi che usano energia per far accrescere, mantenere e riparare l’organismo.&lt;br /&gt;Il catabolismo comprende tutti i processi in un cui vengono demolite delle sostanze per liberare energia.&lt;br /&gt;Processi anabolici e catabolici avvengono costantemente.&lt;br /&gt;Le sostanze alimentari che costituiscono il nostro nutrimento si dividono in tre categorie principali: &lt;strong&gt;CARBOIDRATI, GRASSI e PROTEINE&lt;/strong&gt;. Carboidrati, grassi e proteine sono costituiti da minuscole particelle, le molecole, a loro volta formate di particelle ancora più piccole, gli atomi: nei legami che tengono uniti gli atomi nella molecola è imprigionata energia.&lt;br /&gt;Nel metabolismo sia ha quindi un passaggio di energia dagli alimenti all’organismo.&lt;br /&gt;&lt;/span&gt;&lt;span style="color:#000000;"&gt;I &lt;/span&gt;&lt;a href="http://www.vivailfitness.it/carbo.htm"&gt;&lt;span style="color:#6600cc;"&gt;carboidrati&lt;/span&gt;&lt;/a&gt; &lt;span style="color:#000000;"&gt;formati da grandi molecole, come l’amido, non possono passare direttamente dall’apparato digerente al sangue, ma devono essere prima demoliti e ridotti a carboidrati con molecole più piccole: ciò avviene durante il processo della digestione. Nel corso di essa i carboidrati complessi vengono scissi e ridotti a Glucosio, che è uno zucchero semplice, solubile. Il Glucosio viene portato dal sangue alle cellule ed è nelle cellule che, mediante la rottura dei legami chimici delle molecole di Glucosio, si libera energia. Per operare questa demolizione è necessario l’ossigeno, portato alle cellule dal sangue. Il processo di assunzione e utilizzazione dell’ossigeno per produrre energia dagli zuccheri è detto respirazione.&lt;br /&gt;La reazione chimica di ossidazione con la quale viene demolito il Glucosio può essere espressa così: Glucosio più Ossigeno = Anidride Carbonica più Acqua più Energia.&lt;br /&gt;Ciò non avviene in un solo passaggio; questo schema considera soltanto i prodotti iniziali e finali della reazione. Il Glucosio si trasforma prima in un composto chimico detto acido citrico; questo poi subisce una serie di trasformazioni, che nel loro insieme costituiscono il ciclo dell’acido citrico o &lt;/span&gt;&lt;a href="http://www.vivailfitness.it/krebs.htm"&gt;&lt;span style="color:#6600cc;"&gt;CICLO DI KREBS&lt;/span&gt;&lt;/a&gt;&lt;span style="color:#000000;"&gt;.&lt;br /&gt;&lt;/span&gt;&lt;span style="color:#000000;"&gt;Nel ciclo dell’acido citrico viene liberata una certa quantità di energia, e contemporaneamente si libera anche anidride carbonica, acqua e Idrogeno: successivamente l’ossigeno si combina con l’idrogeno con formazione di altra acqua e liberazione di altra energia.&lt;br /&gt;Al termine del processo ben il 60% cerca dell’energia contenuta inizialmente nella molecola di Glucosio è messa a disposizione dell’organismo come energia utile. Rimane solo anidride carbonica, che passa dalle cellule al sangue per poi essere eliminata dai polmoni con l’espirazione, poiche’ il suo accumulo altererebbe l’equilibrio chimico del sangue con conseguenze deleterie.&lt;br /&gt;Dopo un pasto la quantità di Glucosio nell’organismo aumenta. In parte esso passa nelle cellule per fornire energia, in parte viene trasformato in&lt;/span&gt; &lt;span style="color:#6600cc;"&gt;Glicogeno&lt;/span&gt; &lt;span style="color:#000000;"&gt;e accumulato nel fegato e nei muscoli. Quando il tasso di Glucosio nel sangue diminuisce, un po’ di Glicogeno viene ritrasformato in Glucosio, che passa nel sangue riportandolo a una di glicemia normale.&lt;br /&gt;Il cervello ricava la sua energia soltanto dal Glucosio, motivo per cui è importante che il sangue ne’ porti al cervello una quantità sufficiente.&lt;br /&gt;Se nella trasformazione delle Glucosio in energia, l’ossigeno scarseggia, si forma l’acido lattico, composto chimico tossico per le cellule che provoca la sensazione della fatica muscolare.&lt;br /&gt;Nei movimenti moderati, come il camminare, si può immettere con la normale respirazione una quantità di ossigeno sufficiente a distruggere l’acido lattico, mentre negli esercizi pesanti, come la corsa, l’acido lattico viene prodotto in abbondanza e per distruggerlo bisogna accelerare il ritmo respiratorio: infatti correndo si ansima, in modo da immettere nell’organismo una maggiore quantità di ossigeno. Gli atleti si allenano, appunto, per sviluppare la respirazione e per poter assumere ossigeno in quantità maggiore; quando hanno raggiunto la forma, sono in grado di prolungare notevolmente l’attività fisica, prima di avvertire la stanchezza.&lt;br /&gt;I carboidrati contenuti negli alimenti vengono utilizzati in tre modi:&lt;br /&gt;-per produrre energia;&lt;br /&gt;-per alimentare la riserva di Glicogeno nel fegato e nei muscoli;&lt;br /&gt;-come riserva di grasso (i carboidrati eccedenti infatti vengono trasformati in grassi) da utilizzare in caso di necessità.&lt;br /&gt;Durante la digestione i&lt;/span&gt; &lt;a href="http://www.vivailfitness.it/grassi.htm"&gt;&lt;span style="color:#6600cc;"&gt;grassi&lt;/span&gt; &lt;/a&gt;&lt;span style="color:#000000;"&gt;ingeriti con gli alimenti vengono scisse in molecole più piccole (glicerina e acidi grassi) che passano nel sangue sotto forma di minuscole gocce. Sia gli acidi grassi, che la glicerina, possono subire il CICLO DI KREBS per produrre energia: la completa ossidazione di un grammo di grassi produce circa &lt;/span&gt;&lt;span style="color:#6600cc;"&gt;9 &lt;/span&gt;&lt;a href="http://www.vivailfitness.it/calo.htm"&gt;&lt;span style="color:#6600cc;"&gt;calorie (kilocalorie)&lt;/span&gt;&lt;/a&gt;&lt;span style="color:#000000;"&gt;.&lt;br /&gt;&lt;/span&gt;&lt;span style="color:#6600cc;"&gt;&lt;span style="color:#000000;"&gt;I grassi non utilizzati per la produzione di energia vengono assimilati nel tessuto adiposo e accumulati.&lt;br /&gt;Le&lt;/span&gt; &lt;/span&gt;&lt;a href="http://www.vivailfitness.it/prote.htm"&gt;&lt;span style="color:#6600cc;"&gt;proteine &lt;/span&gt;&lt;/a&gt;&lt;span style="color:#000000;"&gt;inserite con il cibo vengono scisse durante il processo della digestione in molecole più piccole dette aminoacidi, che passano nel sangue e vengono assunte dalle cellule.&lt;br /&gt;Nelle molecole degli aminoacidi c’è una parte che contiene azoto, quando gli aminoacidi sono usati per produrre energia, l’azoto viene liberato e può avvelenare l’organismo se non viene eliminato. Il sangue provvede pertanto a trasportare l’azoto al fegato, dove è trasformato in urea, che a sua volta viene trasportata ai reni, per poi essere espulsa con l’urina.&lt;br /&gt;Eliminata la frazione azotata, gli aminoacidi possono partecipare al ciclo di Krebs e produrre energia, oppure, come il glucosio, essere trasformati in glicogeno.&lt;br /&gt;Ma, l’organismo necessita di aminoacidi anzitutto per la produzione delle proprie proteine da utilizzare nell’accrescimento e per rimpiazzare cellule danneggiate o distrutte: questa è la funzione principale delle proteine, e quindi demolirle per produrre energia è uno spreco.&lt;br /&gt;&lt;/span&gt;&lt;span style="color:#000000;"&gt;Per tutti i processi metabolici sono necessari gli&lt;/span&gt; &lt;a href="http://www.vivailfitness.it/enzi.htm"&gt;&lt;span style="color:#6600cc;"&gt;ENZIMI&lt;/span&gt;&lt;/a&gt;&lt;span style="color:#000000;"&gt;, sostanze chimiche di natura proteica, che influenzano la velocità delle reazioni chimiche: senza di essi i processi metabolici sarebbero lentissimi o non avverrebbero affatto. Tutti gli enzimi sono specifici, agiscono cioè solo per una determinata reazione o per un gruppo di reazioni strettamente affini e pertanto per un corretto funzionamento dell’organismo occorrono migliaia di enzimi diversi; alcuni di essi agiscono solo in presenza di sostanze dette COENZIMI (le vitamine spesso svolgono la funzione di coenzimi).&lt;br /&gt;I processi metabolici sono inoltre attivati da ORMONI (messaggeri chimici), che provocano l’instaurarsi di un determinato processo o inibiscono un processo in atto. L’ormone Tirodeo, la Tiroxina, fa accelerare il metabolismo. Una persona affetta da esagerata produzione di questo ormone é nervosa, ha una sudorazione eccessiva ed una elevata temperatura corporea; al contrario, se l’ormone è prodotto in scarsità, il metabolismo rallenta, si avverte freddo e se tale insufficienza si potrae per anni, l’accrescimento, senza le cure appropriate, sarà ridotto.&lt;br /&gt;&lt;/span&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;. &lt;/span&gt;&lt;/div&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;&lt;div align="center"&gt;&lt;span style="font-family:webdings;font-size:100%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:webdings;font-size:100%;color:#000000;"&gt;l l l&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:webdings;"&gt;&lt;span style="font-family:courier new;"&gt;.&lt;/span&gt; &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;/span&gt;&lt;span style="font-size:130%;color:#000099;"&gt;&lt;strong&gt;INSULINA&lt;/strong&gt;:&lt;/span&gt;&lt;br /&gt;&lt;span style="color:#000000;"&gt;L’insulina e’ un ormone prodotto dal pancreas; e’ l’ormone anabolico per eccellenza, infatti la sua azione si esplica sul metabolismo glicidico, lipidico e proteico, nel determinare un accumulo di glucidi, protidi e lipidi e nel limitarne le perdite.Il fattore che stimola principalmente la secrezione dell’insulina e’ l’aumento della glicemia (livello di concentrazione del glucosio nel sangue), ma anche altri elementi: quali aminoacidi e ormoni (glucagone), possono svolgere tale azione. L’insulina provoca una riduzione della glicemia, della aminoacidemia e della quantita’ di grassi nel sangue, in quanto tutti questi elementi vengono accumulati nei tessuti. L’insulina e’ indispensabile alla vita, la sua carenza causa il diabete. Il diabete e’ una malattia caratterizzata dalla alterazione del metabolismo di zuccheri, protidi e grassi.&lt;br /&gt;Il paziente affetto da tale malattia, non riesce a utilizzare i componenti nutritivi, specialmente gli zuccheri, che restando in circolo determinano una iperglicemia cronica, che in mancanza di cure, puo’ portare alla morte.&lt;br /&gt;&lt;/span&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:webdings;color:#000000;"&gt;l l l&lt;/span&gt;&lt;/div&gt;&lt;span style="font-family:Webdings;"&gt;&lt;/span&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;br /&gt;&lt;span style="font-size:130%;color:#000099;"&gt;&lt;strong&gt;ALIMENTAZIONE PRE-GARA&lt;/strong&gt;&lt;span style="color:#000000;"&gt;:&lt;/span&gt;&lt;/span&gt;&lt;br /&gt;&lt;span style="color:#000000;"&gt;La cura dell’alimentazione è fondamentale per l’atleta, particolare importanza assumerà il cosiddetto “regime di gara”, che inizia la sera precedente l’impegno atletico per chiudersi alla fine dello stesso.&lt;br /&gt;Ovviamente in rapporto al tipo di sport praticato insorgono necessità e fabbisogni specifici: un maratoneta si alimenterà sicuramente in modo diverso da un saltatore.&lt;br /&gt;Un’alimentazione razionale deve in ogni caso evitare il calo di forma e rendere minime le reazioni da affaticamento che seguono lo sforzo.&lt;br /&gt;L’atleta utilizzerà durante la competizione le calorie accumulate con l'alimentazione equilibrata dei giorni precedenti, la dieta pre gara ha lo scopo di mantenere il livello energetico ottenuto in precedenza.&lt;br /&gt;Lo sportivo deve avere una sufficiente scorta di&lt;/span&gt; &lt;a href="http://www.vivailfitness.it/glico.htm"&gt;&lt;span style="color:#6600cc;"&gt;glicogeno&lt;/span&gt; &lt;/a&gt;&lt;span style="color:#000000;"&gt;nei muscoli e nel fegato, soprattutto se si appresta a partecipare ad una competizione relativa ad uno sport di durata, in questo senso i cibi più adatti per la vigilia saranno quelli ricchi di amidi (riso, pane, pasta, patate); particolare attenzione si dovrà avere per l’&lt;/span&gt;&lt;a href="http://www.vivailfitness.it/acqua.htm"&gt;&lt;/a&gt;&lt;a href="http://www.vivailfitness.it/acqua.htm"&gt;&lt;span style="color:#6600cc;"&gt;idratazione&lt;/span&gt;&lt;/a&gt; &lt;span style="color:#000000;"&gt;del corpo.&lt;/span&gt;&lt;br /&gt;&lt;span style="color:#000000;"&gt;L’ultimo pasto prima della gara deve essere costituito da cibi facilmente digeribili, deve avere un volume modesto e deve essere consumato almeno 3 – 4 ore prima.&lt;br /&gt;Se la gara è di mattina, occorrerà fare colazione almeno 2 ore prima, e particolare importanza avrà l’alimentazione della sera precedente.&lt;br /&gt;Se la gara è di pomeriggio, la colazione dovrà essere particolarmente abbondante e il pranzo dovrà essere consumato almeno 3 ore prima.&lt;br /&gt;Se la gara è di sera, particolare importanza assumerà il pranzo, mentre prima della gara può essere prevista una razione alimentare di attesa.&lt;br /&gt;Le razioni di attesa hanno specifica rilevanza negli sport di lunga durata e nei casi in cui l’orario di inizio non è ben definito o può essere suscettibile di ritardo (incontri di tennis a seguire) oppure nelle competizioni con intervallo.&lt;br /&gt;La razione di attesa serve ad equilibrare, ad evitare e a compensare brusche variazioni della glicemia e ad idratare l’organismo. Infatti, specialmente negli atleti emotivi l’ansia dell’attesa è in grado di abbassare la glicemia più del lavoro muscolare stesso; inoltre ritardi di oltre mezz’ora, soprattutto con alte temperature, possono modificare glicemia e idratazione.&lt;br /&gt;La razione di attesa più usata consiste nel bere nell’intervallo fra l’ultimo pasto e l’inizio della gara, ogni ora, un bicchiere di acqua con succo di frutta concentrato, senza aggiunta di zucchero, oppure acqua e fruttosio, o ancora meglio acqua con &lt;/span&gt;&lt;a href="http://www.vivailfitness.it/malto.htm"&gt;&lt;span style="color:#6600cc;"&gt;maltodestrine&lt;/span&gt;&lt;/a&gt;&lt;span style="color:#000000;"&gt;; l’ultimo va assunto almeno mezz’ora prima.&lt;br /&gt;Rifornimento nell’intervallo: tipico degli sport di squadra (calcio). Si deve cercare di rifornire l’organismo delle sostanze consumate durante la prima parte della gara, tenendo conto che per l’assimilazione abbiamo soltanto pochi minuti.&lt;br /&gt;&lt;/span&gt;&lt;span style="color:#000000;"&gt;Sara’ pertanto opportuno introdurre &lt;/span&gt;&lt;a href="http://www.vivailfitness.it/idrosali.htm"&gt;&lt;span style="color:#6600cc;"&gt;liquidi e sali&lt;/span&gt;&lt;/a&gt;&lt;span style="color:#000000;"&gt;, per combattere le perdite di sudore e l’acidosi da fatica, e zuccheri facilmente e velocemente assimilabili, per ristabilire eventualmente la giusta glicemia (fruttosio, maltodestrine).&lt;br /&gt;E’ molto importante poco prima di una competizione non ingerire saccarosio (lo zucchero comune), poiché, provocando un’impennata glicemica, stimola l’intervento dell’&lt;/span&gt;&lt;a href="http://www.vivailfitness.it/insu.htm"&gt;&lt;/a&gt;&lt;a href="http://www.vivailfitness.it/insu.htm"&gt;&lt;span style="color:#6600cc;"&gt;insulina&lt;/span&gt;&lt;/a&gt; &lt;span style="color:#000000;"&gt;che porta ad una ipoglicemia successiva, rischiando di compromettere la gara.&lt;br /&gt;Evitare quindi anche tutte le bevande che lo contengono: bibite in lattina, succhi addizionati, ecc.&lt;br /&gt;Riassumendo:&lt;br /&gt;- assumere carboidrati complessi sino a due ore prima dell’attività fisica;&lt;br /&gt;- evitare nei trenta minuti che precedono lo sforzo di ingerire zuccheri, specialmente quelli ad alto&lt;/span&gt; &lt;a href="http://www.vivailfitness.it/carbo.htm"&gt;&lt;span style="color:#6600cc;"&gt;indice glicemico&lt;/span&gt;&lt;/a&gt;&lt;span style="color:#000000;"&gt;;&lt;br /&gt;&lt;/span&gt;&lt;span style="color:#000000;"&gt;- nelle discipline di media e soprattutto di lunga durata, assumere, ogni circa 20 minuti, 150-200 cc. di liquidi con maltodestrine disciolte, ad una concentrazione non superiore al 7-8%.&lt;br /&gt;Nelle &lt;/span&gt;&lt;a href="http://www.vivailfitness.it/metabo.htm"&gt;&lt;span style="color:#6600cc;"&gt;fibre muscolari&lt;/span&gt;&lt;/a&gt;&lt;span style="color:#000000;"&gt;, durante un lavoro impegnativo o/e prolungato, in seguito alla riduzione del contenuto di Glicogeno, si consumano dapprima le piccole scorte disponibili di due aminoacidi, l’alanina e la&lt;/span&gt; &lt;a href="http://www.vivailfitness.it/gluta.htm"&gt;&lt;span style="color:#6600cc;"&gt;glutammina&lt;/span&gt;&lt;/a&gt;&lt;span style="color:#000000;"&gt;, poi, quando anche queste sostanze sono finite, si smontano le proteine costitutive del muscolo, ecco perché, può essere consigliata l’assunzione degli&lt;/span&gt; &lt;a href="http://www.vivailfitness.it/amino.htm"&gt;&lt;span style="color:#6600cc;"&gt;aminoacidi&lt;/span&gt; &lt;/a&gt;&lt;span style="color:#000000;"&gt;a catena ramificata, che possono essere trasformati, attraverso una serie di reazioni, in Glucosio, la sostanza che, prima che fosse esaurito, derivava proprio dal Glicogeno, evitando dopo l’attività, il problema di ricostruzione &lt;span style="color:#000000;"&gt;del&lt;/span&gt; &lt;/span&gt;&lt;a href="http://www.vivailfitness.it/muscoli.htm"&gt;&lt;span style="color:#6600cc;"&gt;muscolo&lt;/span&gt;&lt;/a&gt;&lt;span style="color:#000000;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#990000;"&gt;Per saperne di più:  &lt;a href="http://www.copacabanarunners.net/it-indice-glicemico.html"&gt;&lt;span style="color:#3333ff;"&gt;www.copacabanarunners.net/it-indice-glicemico.html&lt;/span&gt;&lt;/a&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#990000;"&gt;&lt;/span&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:webdings;font-size:100%;color:#000000;"&gt;l l l&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:arial;font-size:100%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Arial;font-size:100%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:Arial;font-size:100%;color:#000000;"&gt;Vedi anche ALIMENTAZIONE - 2.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div class="blogger-post-footer"&gt;&lt;img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/22297760-114000893940283798?l=omarmagazinesport.blogspot.com' alt='' /&gt;&lt;/div&gt;</content><link rel='replies' type='application/atom+xml' href='http://omarmagazinesport.blogspot.com/feeds/114000893940283798/comments/default' title='Post Comments'/><link rel='replies' type='text/html' href='http://www.blogger.com/comment.g?blogID=22297760&amp;postID=114000893940283798' title='0 Comments'/><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/22297760/posts/default/114000893940283798'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/22297760/posts/default/114000893940283798'/><link rel='alternate' type='text/html' href='http://omarmagazinesport.blogspot.com/2006/02/alimentazione-1-metabolismo-e-insulina.html' title='ALIMENTAZIONE - 1. Metabolismo e Insulina - Alimentazione pre gara'/><author><name>Omar</name><uri>http://www.blogger.com/profile/00706607423468173707</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='32' height='24' src='http://4.bp.blogspot.com/_jgm8E7gW3QY/SvFNV2vhhQI/AAAAAAAABck/uHSQBKPWnfo/S220/io+duna+45.jpg'/></author><thr:total>0</thr:total></entry><entry><id>tag:blogger.com,1999:blog-22297760.post-114001138283602116</id><published>2006-02-06T05:10:00.000-08:00</published><updated>2006-02-17T05:43:01.323-08:00</updated><title type='text'>ALIMENTAZIONE - 2.Perchè si ingrassa (Indice Glicemico ed altro) - Indice di Massa Corporea</title><content type='html'>&lt;span style="font-family:verdana;"&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/span&gt;&lt;br /&gt;&lt;span style="font-family:verdana;font-size:130%;"&gt;&lt;strong&gt;&lt;span style="color:#000099;"&gt;PERCHE' SI INGRASSA?&lt;/span&gt;&lt;/strong&gt;&lt;br /&gt;&lt;/span&gt;&lt;span style="font-family:verdana;font-size:130%;"&gt;&lt;br /&gt;&lt;/span&gt;&lt;br /&gt;&lt;span style="color:#000000;"&gt;Molti pensano che sia l'eccesso di &lt;strong&gt;grassi&lt;/strong&gt; a provocare l'aumento di peso. In realtà,uno dei nemici più &lt;strong&gt;pericolosi&lt;/strong&gt; sono i &lt;strong&gt;carboidrati ad &lt;span style="color:#cc0000;"&gt;alto indice glicemico&lt;/span&gt;&lt;/strong&gt;, che oltre a dare una forte dipendenza psicologica possono scatenare il &lt;strong&gt;meccanismo della fame continua&lt;/strong&gt;, soprattutto in alcuni soggetti più sfortunati. In questo articolo è spiegato questo meccanismo, in un linguaggio comprensibile a tutti.&lt;/span&gt;&lt;span style="color:#000000;"&gt;&lt;br /&gt;&lt;br /&gt;&lt;/span&gt;&lt;span style="color:#000000;"&gt;&lt;/span&gt;&lt;span style="color:#000000;"&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;/span&gt;&lt;/div&gt;&lt;span style="color:#000000;"&gt;L'organismo umano possiede un sistema di regolazione che consente di mantenere entro un certo range la glicemia, ovvero la concentrazione di glucosio disciolto nel sangue. La costanza della glicemia è necessaria per la sopravivvenza del &lt;strong&gt;cervello&lt;/strong&gt;, per tre motivi:&lt;br /&gt;&lt;span style="font-family:arial;"&gt;il cervello, a differenza dei muscoli, non ha la capacità di immagazzinare scorte di glucosio.&lt;br /&gt;il glucosio ematico è praticamente l'unico carburante per il cervello.&lt;br /&gt;il cervello consuma una quantità costante di energia, a prescindere dalla sua attività(studiando, infatti, si consumano pochissime calorie)&lt;br /&gt;&lt;/span&gt;In assenza di glucosio, dopo pochi minuti le cellule celebrali muoiono. Il meccanismo di regolazione della glicemia è basato sul controllo di due ormoni antagonisti: &lt;strong&gt;&lt;span style="color:#000099;"&gt;l'insulina e il glucagone&lt;/span&gt;&lt;/strong&gt;.&lt;/span&gt;&lt;br /&gt;&lt;br /&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;span style="color:#cc0000;"&gt;Effetti dell'insulina sul metabolismo:&lt;/span&gt;&lt;br /&gt;&lt;strong&gt;Promuove l'accumulo di glicogeno (zucchero di riserva) nel fegato e nei muscoli&lt;br /&gt;Deprime il consumo di grassi e proteine in favore dei carboidrati&lt;/strong&gt;, ovvero spinge le cellule a bruciare carboidrati piuttosto che proteine e grassi&lt;br /&gt;&lt;strong&gt;Promuove la formazione di trigliceridi&lt;/strong&gt; (grassi) a partire da carboidrati e proteine&lt;br /&gt;&lt;strong&gt;&lt;span style="color:#cc0000;"&gt;Promuove l'immagazzinamento di grassi nel tessuto adiposo&lt;/span&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;span style="color:#cc0000;"&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;/span&gt;&lt;/strong&gt;&lt;span style="color:#cc0000;"&gt;Effetti del glucagone sul metabolismo&lt;br /&gt;&lt;/span&gt;&lt;strong&gt;Promuove la liberazione del glicogeno dal fegato&lt;/strong&gt;, che viene riversato sottoforma di glucosio nel sangue.&lt;br /&gt;&lt;strong&gt;Promuove il consumo di grassi e proteine a sfavore dei carboidrati&lt;/strong&gt;, ovvero spinge le cellule a bruciare le proteine e i grassi piuttosto che i carboidrati&lt;br /&gt;&lt;strong&gt;Promuove la mobilizzazione dei grassi dai tessuti adiposi&lt;/strong&gt;, che vengono resi disponibili ai tessuti per essere bruciati&lt;br /&gt;Grazie, o a causa di questo meccanismo, possiamo introdurre il &lt;span style="color:#000099;"&gt;glucosio&lt;/span&gt; (sotto forma di &lt;span style="color:#000099;"&gt;carboidrati&lt;/span&gt;) solo poche volte al giorno, durante i pasti: a mantenere costante la sua presenza nel sangue ci pensa l'asse ormonale &lt;strong&gt;insulina-glucagone&lt;/strong&gt;, che utilizza come "magazzino" per il glucosio il fegato. Se la &lt;strong&gt;glicemia scende&lt;/strong&gt;, come durante il digiuno, il &lt;strong&gt;pancreas secerne glucagone&lt;/strong&gt; che ordina al fegato di prelevare &lt;strong&gt;glucosio&lt;/strong&gt; dalle sue scorte e d'immetterlo nel sangue. Il &lt;strong&gt;glucagone&lt;/strong&gt;, inoltre, spinge le cellule all'utilizzo di &lt;strong&gt;&lt;span style="color:#cc0000;"&gt;grassi e proteine&lt;/span&gt;&lt;/strong&gt; come fonte energetica: in questo modo si predispone tutto l'organismo al risparmio del glucosio. &lt;/div&gt;&lt;div align="justify"&gt;Se invece la &lt;strong&gt;glicemia sale&lt;/strong&gt;, come dopo un pasto, il pancreas secerne &lt;span style="color:#cc0000;"&gt;&lt;strong&gt;insulina&lt;/strong&gt;&lt;/span&gt; che comanda al fegato di prelevare il glucosio dal sangue e d'immagazzinarlo. Siccome la capacità del fegato d'immagazzinare glucosio è piuttosto limitata (&lt;strong&gt;circa 70 grammi&lt;/strong&gt;), &lt;strong&gt;&lt;span style="color:#000099;"&gt;i carboidrati in eccesso vengono convertiti in grassi e depositati nei tessuti adiposi&lt;/span&gt;&lt;/strong&gt;. &lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;L'insulina, al contrario del glucagone, spinge le cellule a utilizzare i carboidrati come fonte energetica&lt;/strong&gt;. &lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-family:arial;"&gt;Il nostro organismo si comporta pressapoco in questo modo: quando c'è abbondanza di glucosio si adopera per utilizzarne il più possibile, e quello in eccesso lo immagazzina sottoforma di grassi; quando c'è carenza cerca di conservarlo il più possibile, prelevando i grassi dalle scorte e utilizzandoli come fonte energetica.&lt;/span&gt;&lt;/strong&gt; &lt;/div&gt;&lt;div align="justify"&gt;Il meccanismo dell'insulina diventa "&lt;strong&gt;perverso&lt;/strong&gt;" quando ne viene secreta troppa: in questo caso la glicemia si abbassa troppo, il cervello va in crisi e invia all'organismo gli stimoli per introdurre nuovo combustibile (&lt;strong&gt;FAME&lt;/strong&gt;). La quantità d'insulina secreta dal pancreas dipende dalla &lt;strong&gt;velocità&lt;/strong&gt; con la quale &lt;strong&gt;s'innalza la glicemia&lt;/strong&gt;, questa velocità dipende da due fattori: &lt;strong&gt;&lt;span style="color:#cc0000;"&gt;l'indice glicemico&lt;/span&gt;&lt;/strong&gt; e la &lt;strong&gt;&lt;span style="color:#cc0000;"&gt;quantità dei carboidrati&lt;/span&gt;&lt;/strong&gt; che assumiamo. &lt;/div&gt;&lt;div align="justify"&gt;In &lt;em&gt;&lt;strong&gt;figura &lt;/strong&gt;&lt;/em&gt;&lt;span style="font-family:times new roman;"&gt;&lt;span style="font-family:verdana;"&gt;&lt;em&gt;&lt;strong&gt;1a&lt;/strong&gt;&lt;/em&gt;&lt;/span&gt; &lt;/span&gt;è riportato il caso relativo all'ingestione di carboidrati &lt;strong&gt;a basso indice glicemico&lt;/strong&gt;: la glicemia s'innalza gradualmente, viene secreta una quantità normale d'insulina che riporta gradualmente la glicemia ai livelli precedenti l'assunzione di carboidrati. In questo caso la &lt;strong&gt;fame sopraggiungerà dopo circa 3 ore&lt;/strong&gt;. &lt;strong&gt;&lt;em&gt;Figura&lt;/em&gt; &lt;span style="font-family:verdana;"&gt;&lt;em&gt;1b&lt;/em&gt;&lt;/span&gt;&lt;/strong&gt;: a seguito dell'ingestione di&lt;/span&gt;&lt;/div&gt;&lt;a href="http://www.cibo360.it/alimentazione/chimica/macronutrienti/carboidrati/carbo_aig.htm"&gt;&lt;span style="color:#cc0000;"&gt;&lt;strong&gt;carboidrati AIG&lt;/strong&gt;&lt;/span&gt;&lt;/a&gt; &lt;span style="color:#000000;"&gt;(&lt;strong&gt;ad Alto Indice Glicemico&lt;/strong&gt;), la glicemia subisce un &lt;strong&gt;brusco innalzamento&lt;/strong&gt;, viene secreta una quantità notevole d'insulina che causa un'altrettanto brusca diminuzione della glicemia. In una situazione di questo tipo la&lt;strong&gt; fame&lt;/strong&gt; sopraggiungerà dopo circa &lt;strong&gt;1 ora&lt;/strong&gt; dall'assunzione della stessa quantità di carboidrati.&lt;/span&gt;&lt;br /&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; WIDTH: 285px; CURSOR: hand; HEIGHT: 430px" height="420" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4400.jpg" width="271" border="0" /&gt;&lt;br /&gt;&lt;br /&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;span style="color:#000099;"&gt;L'indice glicemico&lt;/span&gt;&lt;/strong&gt; degli alimenti e la quantità di carboidrati non sono l'unico fattore che influenza la quantità d'&lt;strong&gt;insulina&lt;/strong&gt; che viene secreta dal pancreas, poiché esiste una diversa reazione individuale, com'è stato dimostrato da Gerald Raven nel 1987. Secondo i suoi studi il &lt;strong&gt;25%&lt;/strong&gt; della popolazione ha una risposta insulinica pigra. In pratica questi fortunati individui hanno una risposta simile a quella in figura 1a anche assumendo carboidrati ad alto indice glicemico.Un altro &lt;strong&gt;25%&lt;/strong&gt; della popolazione ha una reazione insulinica eccessiva. Anche assumendo carboidrati a medio indice glicemico, queste persone hanno una reazione insulinica simile a quella di &lt;em&gt;&lt;strong&gt;figura &lt;span style="font-family:verdana;"&gt;1b&lt;/span&gt;&lt;/strong&gt;&lt;/em&gt;. Il restante &lt;strong&gt;50%&lt;/strong&gt; ha un comportamento che possiamo definire "normale".In parole povere per il&lt;strong&gt; 25%&lt;/strong&gt; della popolazione il meccanismo dell'insulina diventa perverso con estrema facilità.In generale il &lt;strong&gt;75%&lt;/strong&gt; della popolazione dovrebbe controllare l'assunzione di carboidrati, il che significa controllare sia l'indice glicemico che le quantità assunte, pena l'inevitabile tendenza al sovrappeso. Essere in grado di controllare questo meccanismo è fondamentale, soprattutto per i soggetti "sfortunati" che ingrassano anche solo pensando a un bignè. Questi sono i principali vantaggi che si ottengono tenendo sotto controllo la produzione di insulina:&lt;br /&gt;- &lt;span style="font-family:arial;"&gt;&lt;strong&gt;si prevengono disfunzioni metaboliche gravi come il diabete di tipo 2&lt;/strong&gt;;&lt;br /&gt;- &lt;strong&gt;si riesce a seguire una dieta ipocalorica senza avere sempre lo stimolo della fame&lt;/strong&gt;&lt;br /&gt;- &lt;strong&gt;si riesce a mantenere il peso forma senza troppi sacrifici&lt;/strong&gt;&lt;br /&gt;- &lt;strong&gt;si contribuisce a mantenere basso il colesterolo, poiché l'insulina è uno dei fattori che stimola la produzione endogena.&lt;br /&gt;&lt;/strong&gt;&lt;/span&gt;Per poter mantenere l'insulina entro livelli accettabili occorre seguire queste semplici regole:&lt;br /&gt;- limitare i &lt;/span&gt;&lt;a href="http://www.cibo360.it/alimentazione/chimica/macronutrienti/carboidrati/carbo_aig.htm"&gt;&lt;strong&gt;&lt;span style="color:#000099;"&gt;carboidrati AIG&lt;/span&gt;&lt;/strong&gt;&lt;/a&gt;&lt;span style="color:#000000;"&gt;;&lt;br /&gt;- assumere pasti con la corretta ripartizione dei macronutrienti (evitare i pasti a base di soli carboidrati);&lt;br /&gt;- mangiare &lt;strong&gt;4-5&lt;/strong&gt; volte al giorno, evitando abbuffate nei pasti principali;&lt;br /&gt;- preferire fonti di &lt;strong&gt;carboidrati&lt;/strong&gt; a &lt;span style="color:#000099;"&gt;bassa densità&lt;/span&gt;, e preferire quelli a &lt;span style="color:#000099;"&gt;&lt;strong&gt;basso indice glicemico&lt;/strong&gt;&lt;/span&gt;.&lt;br /&gt;&lt;br /&gt;I &lt;strong&gt;carboidrati&lt;/strong&gt;, detti anche &lt;strong&gt;glucidi&lt;/strong&gt; (dal greco "glucos" = dolce) sono composti organici costituiti da carbonio, idrogeno e ossigeno. Vengono sintetizzati dai vegetali dall'anidride carbonica dell'aria e dall'acqua del suolo per mezzo della fotosintesi clorofilliana. &lt;strong&gt;Un grammo di carboidrati fornisce circa &lt;span style="color:#000099;"&gt;4 kcal&lt;/span&gt;&lt;/strong&gt;, come un grammo di proteine. L'organismo impiega circa il &lt;strong&gt;10%&lt;/strong&gt; dell'energia per digerire una certa quantità di carboidrati, mentre ne impiega ben il &lt;strong&gt;30%&lt;/strong&gt; per digerire le proteine: quindi i carboidrati "ingrassano" il &lt;strong&gt;20%&lt;/strong&gt; in più rispetto alle proteine.&lt;br /&gt;Si dividono in:&lt;br /&gt;- &lt;/span&gt;&lt;a href="http://www.cibo360.it/alimentazione/chimica/macronutrienti/carboidrati/monosaccaridi.htm"&gt;&lt;span style="color:#000099;"&gt;monosaccaridi&lt;/span&gt;&lt;/a&gt;&lt;span style="color:#000000;"&gt;, o glucidi semplici, con formula generale Cn(H2O)n, i più importanti sono il glucosio e il fruttosio;&lt;br /&gt;- &lt;/span&gt;&lt;a href="http://www.cibo360.it/alimentazione/chimica/macronutrienti/carboidrati/disaccaridi.htm"&gt;&lt;span style="color:#000099;"&gt;oligosaccaridi&lt;/span&gt;&lt;/a&gt;&lt;span style="color:#000000;"&gt;, formati da 2 a 10 unità di monosaccaridi, che si suddividono a loro volta in disaccaridi, trisaccaridi, ecc., i più importanti sono il saccarosio e il lattosio;&lt;br /&gt;- &lt;/span&gt;&lt;a href="http://www.cibo360.it/alimentazione/chimica/macronutrienti/carboidrati/polisaccaridi.htm"&gt;&lt;span style="color:#000099;"&gt;polisaccaridi&lt;/span&gt;&lt;/a&gt;&lt;span style="color:#000000;"&gt;, composti da 10 o più unità zuccherine, fino a qualche migliaio, il più importante è l'amido&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;strong&gt;&lt;span style="font-size:130%;color:#000099;"&gt;DOVE SI TROVANO I CARBOIDRATI AIG?&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;span style="color:#000000;"&gt;È molto semplice: negli alimenti che hanno un&lt;/span&gt; &lt;a href="http://www.cibo360.it/alimentazione/dietologia/indici_tabelle/ig_alfa.htm"&gt;&lt;span style="color:#000099;"&gt;indice glicemico&lt;/span&gt;&lt;/a&gt; &lt;span style="color:#000000;"&gt;elevato (superiore a 60 - 70). Fortunatamente non è necessario imparare a memoria l'indice glicemico di ogni alimento, poichè all'interno di ogni categoria di alimenti le variazioni sono molto limitate. Ovviamente esistono delle eccezioni, che bisogna assolutamente conoscere per evitare errori: queste, tuttavia, sono poche e facili da ricordare.&lt;br /&gt;&lt;strong&gt;- La frutta, la verdura, i cereali integrali, i latticini hanno in generale un indice glicemico basso&lt;/strong&gt;.&lt;br /&gt;&lt;strong&gt;- I cereali raffinati, lo zucchero (saccarosio), i dolci, le bevande zuccherate hanno un indice glicemico alto.&lt;br /&gt;&lt;/strong&gt;Nella seguente tabella vengono riportati alcuni gli alimenti che contengono carboidrati AIG, se vuoi maggiori informazioni rimandiamo alla pagina &lt;/span&gt;&lt;span style="color:#000000;"&gt;sull'&lt;/span&gt;&lt;a href="http://www.cibo360.it/alimentazione/dietologia/indici_tabelle/ig_alfa.htm"&gt;&lt;span style="color:#000099;"&gt;indice glicemico&lt;/span&gt;&lt;/a&gt;&lt;span style="color:#000000;"&gt;. &lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4401.jpg"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; CURSOR: hand" height="181" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4401.jpg" width="427" border="0" /&gt;&lt;/a&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000099;"&gt;&lt;strong&gt;OCCHIO ALL'ETICHETTA!&lt;/strong&gt;&lt;/span&gt;&lt;br /&gt;&lt;span style="color:#000000;"&gt;Leggere gli ingredienti riportati per legge sull'etichetta dei prodotti è di importanza fondamentale per individuare i carboidrati &lt;strong&gt;AIG&lt;/strong&gt;. Per individuare un prodotto ad alto indice glicemico, basta verificare se negli ingredienti c'è la dicitura "zucchero" o "sciroppo di glucosio" ai primi posti. Lo sciroppo di cereali (come il malto) è equivalente allo scioroppo di glucosio. Non fidatevi dei messaggi promozionali ("&lt;strong&gt;senza zucchero&lt;/strong&gt;"), ma leggete sempre gli ingredienti!&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;a href="http://photos1.blogger.com/blogger/1986/1520/1600/DSCN4402.jpg"&gt;&lt;img style="FLOAT: left; MARGIN: 0px 10px 10px 0px; CURSOR: hand" height="224" alt="" src="http://photos1.blogger.com/blogger/1986/1520/400/DSCN4402.jpg" width="428" border="0" /&gt;&lt;/a&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;I due alimenti di riferimento più utilizzati sono il &lt;span style="color:#000099;"&gt;&lt;strong&gt;glucosio&lt;/strong&gt;&lt;/span&gt; e il &lt;strong&gt;&lt;span style="color:#000099;"&gt;pane bianco&lt;/span&gt;&lt;/strong&gt;: è quindi possibile trovare indici diversi per lo stesso alimento: quando si confrontano gli indici glicemici di due alimenti (ricavati da fonti diverse) occorre accertarsi che siano calcolati in base allo stesso alimento di riferimento. Per calcolare l'indice glicemico rispetto al pane bianco basta moltiplicare per&lt;strong&gt; 1,37&lt;/strong&gt; quello calcolato rispetto al gucosio.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:130%;color:#000099;"&gt;&lt;strong&gt;TABELLE DELL'INDICE GLICEMICO&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;br /&gt;&lt;span style="color:#000000;"&gt;L'anno scorso è uscita la tabella aggiornata degli indici glicemici, "&lt;strong&gt;International table of glycemic index and glycemic load values&lt;/strong&gt;" (Foster-Powell K, Holt SH, Brand-Miller JC. Human Nutrition Unit, School of Molecular and Microbial Biosciences, University of Sydney, NSW, Australia.), pubblicata su Am J Clin Nutr. 2003 Apr; 77(4):994. La vera novità è l'introduzione della &lt;strong&gt;variabilità dell'indice glicemico&lt;/strong&gt;. Le vecchie tabelle (anche la nostra!) riportavano solamente il valore medio degli indici glicemici. Questi valori portavano a conclusioni fuorivianti. Infatti:&lt;br /&gt;&lt;strong&gt;1) L'indice glicemico cambia a seconda della varietà dell'alimento&lt;/strong&gt;. In molti casi tale variabilità è modesta, in altri è talmente alta che il valore perde di ogni significato. È il caso del &lt;strong&gt;riso&lt;/strong&gt; (&lt;strong&gt;48-112&lt;/strong&gt;), &lt;span style="color:#000099;"&gt;&lt;strong&gt;del pane bianco&lt;/strong&gt;&lt;/span&gt; (&lt;strong&gt;30-110&lt;/strong&gt;), delle &lt;strong&gt;patate bollite&lt;/strong&gt; (&lt;strong&gt;56-101&lt;/strong&gt;).&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;2) L'indice glicemico varia a seconda del grado di maturazione&lt;/strong&gt;. Anche in questo caso, per alcuni alimenti la variazione è notevole e rende il valore poco significativo.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;3) Negli alimenti cucinati, l'indice glicemico varia a seconda degli ingredienti e della preparazione&lt;/strong&gt;. Questo fatto implica che non si può determinare in modo sufficientemente preciso l'indice glicemico di un alimento cucinato in ambiente domestico o un alimento confezionato che non sia stato scelto come campione. Infatti nella tabella di riferimento viene sempre indicata la marca del prodotto testato. &lt;/span&gt;&lt;/div&gt;&lt;span style="color:#000000;"&gt;&lt;div align="justify"&gt;&lt;br /&gt;&lt;/span&gt;&lt;/div&gt;&lt;span style="color:#000000;"&gt;&lt;strong&gt;&lt;span style="color:#cc0000;"&gt;Come considerare l'indice glicemico&lt;br /&gt;&lt;/span&gt;&lt;/strong&gt;La nuova tabella degli indici glicemici dimostra chiaramente come ogni confronto tra alimenti ha senso solo se la differenza tra gli indici glicemici è netta. Preferire la pasta al riso o alle patate restringe inutilmente le nostre possibilità di variare e quindi ci spinge verso l'&lt;/span&gt;&lt;a href="http://www.cibo360.it/alimentazione/dietologia/dieta_ideale/ortoressia.htm"&gt;&lt;span style="color:#000000;"&gt;ortoressia&lt;/span&gt;&lt;/a&gt;&lt;span style="color:#000000;"&gt;. Le considerazioni utili che si possono fare sull'indice glicemico sono le seguenti.&lt;br /&gt;&lt;strong&gt;1) L'indice glicemico diminuisce se si aggiungono grassi ad un alimento&lt;/strong&gt;. Questo fenomeno è dovuto al fatto che la digestione dell'alimento al quale sono stati &lt;span style="color:#000099;"&gt;&lt;strong&gt;aggiunti&lt;/strong&gt;&lt;/span&gt; &lt;span style="color:#000099;"&gt;&lt;strong&gt;i grassi è più lenta&lt;/strong&gt;&lt;/span&gt;, e quindi i carboidrati che contiene vanno in circolo più lentamente. Questo fatto si può verificare facilmente, basta confrontare (per esempio) il latte scremato e il latte intero. Quindi a volte &lt;strong&gt;&lt;em&gt;non è sempre vero che un alimento "light" sia migliore del corrispondente "normale&lt;/em&gt;&lt;/strong&gt;", poichè potrebbe essere meno saziante (questo è particolarmente vero per lo yogurt).&lt;br /&gt;&lt;strong&gt;2) L'indice glicemico diminuisce se si aggiungono proteine&lt;/strong&gt; ad un alimento, per lo stesso motivo del punto 1.&lt;br /&gt;&lt;strong&gt;3) Il rilascio totale di insulina non dipende dall'indice glicemico&lt;/strong&gt; &lt;span style="color:#000099;"&gt;&lt;strong&gt;ma dal carico glicemico&lt;/strong&gt;&lt;/span&gt;, ovvero dal prodotto tra indice glicemico e la quantità di carboidrati ingerita.&lt;br /&gt;Volendo tradurre in consigli queste considerazioni, si scopre che chi segue una alimentazione equilibrata non &lt;span style="color:#000000;"&gt;aggiunge nulla al suo comportamento alimentare. Infatti:&lt;br /&gt;&lt;span style="font-family:arial;"&gt;&lt;strong&gt;-&gt; in una alimentazione equilibrata, composta da una quantità di carboidrati non superiore al 55% delle calorie giornaliere, dove quindi i grassi e le proteine non vengono demonizzati;&lt;br /&gt;&lt;/strong&gt;&lt;/span&gt;&lt;span style="font-family:arial;"&gt;&lt;strong&gt;-&gt; in una alimentazione che ripartisce carboidrati, proteine e grassi in modo uniforme (ma non maniacale) nell'arco della giornata;&lt;br /&gt;-&gt; in una alimentazione che consente il mantenimento del peso corporeo, e che quindi deve essere composta da alimenti sazianti;&lt;br /&gt;&lt;/strong&gt;&lt;/span&gt;il carico glicemico è automaticamente sotto controllo, poiché la quantità di carboidrati è sotto controllo, e i grassi e le proteine, nonché l'assunzione di alimenti sazianti come verdura e frutta, contribuiscono ad abbassare l'indice glicemico anche dei cibi più a rischio.&lt;br /&gt;Diventa perciò inutile dare eccessiva importanza all'indice glicemico.&lt;br /&gt;&lt;strong&gt;&lt;span style="color:#990000;"&gt;Attenzione!&lt;/span&gt;&lt;/strong&gt; Questo non significa che una fonte di carboidrati vale l'altra, ma che è assurdo ragionare su differenze minime o &lt;span style="color:#000099;"&gt;&lt;strong&gt;impostare un intero modello alimentare sull'indice glicemico&lt;/strong&gt;&lt;/span&gt;. In parole povere, discriminare tra &lt;strong&gt;riso&lt;/strong&gt;, &lt;strong&gt;pasta e patate&lt;/strong&gt; non ha molto senso a parità di quantità, &lt;strong&gt;ha&lt;/strong&gt;&lt;/span&gt;&lt;strong&gt; senso invece&lt;/strong&gt; discriminare tra &lt;strong&gt;pasta e pasta integrale&lt;/strong&gt;, o tra &lt;strong&gt;ciliegie e cocomeri&lt;/strong&gt;, tra&lt;strong&gt; zucchero e fruttosio&lt;/strong&gt;.&lt;/span&gt;&lt;br /&gt;&lt;div align="justify"&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-size:100%;color:#000099;"&gt;&lt;strong&gt;ALCUNE TABELLE DI ALIMENTI E RELATIVO I.G.&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;em&gt;&lt;span style="font-family:arial;color:#000000;"&gt;---------------------------------------------------------------------------------------------------------------&lt;/span&gt;&lt;/em&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:arial;font-size:100%;color:#000000;"&gt;&lt;strong&gt;ALIMENTO&lt;/strong&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;. . . . . .&lt;/span&gt;&lt;strong&gt;IG (su glucosio)&lt;/strong&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;..................&lt;span style="font-size:100%;color:#000000;"&gt;&lt;strong&gt;ALIMENTO&lt;/strong&gt;&lt;span style="font-size:78%;color:#ffcc33;"&gt;......&lt;span style="font-size:100%;color:#000000;"&gt;&lt;strong&gt;IG (su glucosio)&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="justify"&gt;&lt;span style="font-family:arial;font-size:100%;color:#000000;"&gt;---------------------------------------------------------------------------------------------------------------&lt;/span&gt;&lt;br /&gt;&lt;span style="font-family:arial;color:#000000;"&gt;Albicocca .................38 ± 2&lt;span style="font-size:78%;color:#ffcc33;"&gt;.......................&lt;/span&gt;Pane bianco da .................30 a 110&lt;br /&gt;All-Bran ....................42 ± 5&lt;span style="font-size:78%;color:#ffcc33;"&gt;......................&lt;/span&gt;&lt;span style="font-size:100%;"&gt;Pane di Segale da.............. 50 a 64&lt;br /&gt;&lt;/span&gt;Ananas ....................59 ± 8&lt;span style="font-size:78%;"&gt;&lt;span style="color:#ffcc33;"&gt;.....................&lt;span style="font-size:100%;"&gt;.&lt;span style="color:#000000;"&gt;Patate al forno.....................89±12&lt;/span&gt;&lt;/span&gt;&lt;span style="font-size:100%;"&gt;&lt;br /&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style="font-family:arial;color:#000000;"&gt;Arancia ....................42 ± 3&lt;span style="color:#ffcc33;"&gt;&lt;span style="font-size:78%;"&gt;.......................&lt;/span&gt;&lt;span style="font-size:100%;"&gt;&lt;span style="color:#000000;"&gt;Patate comuni bolliteda ......56 a 101&lt;br /&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;Banana ....................52 ± 4&lt;span style="color:#ffcc33;"&gt;.................&lt;span style="color:#000000;"&gt;Patate dolci.........................61 ± 7&lt;br /&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style="font-family:arial;color:#000000;"&gt;Carota......................47 ± 16&lt;span style="color:#ffcc33;"&gt;................&lt;span style="color:#000000;"&gt;Patate fritte.........................75&lt;br /&gt;&lt;/span&gt;&lt;/span&gt;Cialda di cono gelato.79.6&lt;span style="color:#ffcc33;"&gt;.....................&lt;span style="color:#000000;"&gt;Pere..................................38±2&lt;br /&gt;&lt;/span&gt;&lt;/span&gt;Ciliegie.....................22&lt;span style="color:#ffcc33;"&gt;.......................&lt;span style="color:#000000;"&gt;Pere in Scatola...................46.0&lt;br /&gt;&lt;/span&gt;&lt;/span&gt;Cocomero.................72 ± 13&lt;span style="color:#ffcc33;"&gt;...............&lt;span style="color:#000000;"&gt;Pesca frescada...................28 a 56&lt;/span&gt;&lt;br /&gt;&lt;/span&gt;Cornetti (croissant)....67&lt;span style="color:#ffcc33;"&gt;.......................&lt;span style="color:#000000;"&gt;Pesche in Scatolada...........30 a 71&lt;br /&gt;&lt;/span&gt;&lt;/span&gt;Cornflakes (Kellog's)..91&lt;span style="color:#ffcc33;"&gt;.......................&lt;span style="color:#000000;"&gt;Piselli bolliti........................32.9&lt;br /&gt;&lt;/span&gt;&lt;/span&gt;Crackers da..............52 a 98&lt;span style="color:#ffcc33;"&gt;................&lt;span style="color:#000000;"&gt;Pizza al formaggio (Italia).....80&lt;/span&gt;&lt;br /&gt;&lt;/span&gt;Fagio
