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Sport: uomini più forti ma alle donne il primato della resistenza

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Ad evidenziarlo le differenze tra uomini e donne durante l’esercizio fisico è una ricerca guidata dall’Università della British Columbia, in Canada, pubblicata su Applied Physiology, Nutrition, and Metabolism.

Gli uomini sono risultati più forti ma alle donne le donne sono più resistenti, soprattutto dal punto di vista muscolare, arrivate alla fine sono infatti significativamente meno affaticate.

Gli studiosi hanno preso in esame 8 uomini e 9 donne che avevano un livello simile di allenamento. I partecipanti sono stati invitati a flettere il piede contro una serie di sensori il più velocemente possibile per 200 volte. Sono stati registrati velocità, potenza, movimenti e attività elettrica dei muscoli.

“Abbiamo scelto di misurare i movimenti del piede perché utilizza i muscoli del polpaccio sul dorso della gamba, essenziali per pratiche quotidiane come stare in piedi e camminare – spiega Brian Dalton, autore dello studio – e abbiamo trovato che gli uomini erano più veloci e più potenti ma si affaticavano molto più velocemente delle donne”. Sebbene sia stato studiato un solo gruppo muscolare isolato, Dalton afferma di aspettarsi risultati simili per gli altri. I suoi risultati inoltre sono coerenti con quelli di altri studi. “Sappiamo da una ricerca precedente che per eventi come l’ultra trail running (corsa che si svolge in ambiente naturale, generalmente su sentieri, per molti chilometri), gli uomini possono completare il percorso più velocemente, ma le donne sono notevolmente meno stanche alla fine”. Per gli studiosi quanto è emerso può avere importanti applicazioni pratiche, come ad esempio la costruzione di ambienti di lavoro in cui ridurre il senso di affaticamento.

Fonte: Ansa

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