O que escolher para ganhar mais massa muscular: máquinas ou pesos livres?
Artigo citado:
Schwanbeck, SR, Cornish, SM, Barss, T, and Chilibeck, PD. Effects of training with free weights versus machines on muscle mass, strength, free testosterone, and free cortisol levels. J Strength Cond Res 34(7): 1851–1859, 2020
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