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48<br />

Giornale Italiano di Cardiologia Pratica<br />

It J Practice Cardiol<br />

Ottobre 2003<br />

ventricolo s<strong>in</strong>istro provoca a sua volta un<br />

aumento del ritorno venoso al cuore destro,<br />

con un sovraccarico venoso capace di <strong>in</strong>durre<br />

un prolungamento del RVTm.<br />

CONCLUSIONI<br />

I nostri studi suggeriscono l’ut<strong>il</strong>ità del DTI<br />

pulsato nell’identificare <strong>il</strong> comportamento<br />

regionale del miocardio ventricolare destro<br />

negli atleti di fondo e dimostrare la fisiologica<br />

cooperazione bi-ventricolare legata all’attività<br />

sportiva.<br />

L’aumento del precarico nell’allenamento di<br />

endurance può spiegare sia <strong>il</strong> prolungamento<br />

del r<strong>il</strong>asciamento attivo del ventricolo<br />

destro sia la migliore performance ut<strong>il</strong>e<br />

del ventricolo s<strong>in</strong>istro, tipici riadattamenti fisiologici<br />

del cuore d’atleta.<br />

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