Optimal resistance training prescriptions to improve muscle strength, physical function, and muscle mass in older adults diagnosed with sarcopenia: a systematic review and meta-analysis.

Interventions delivered three times per week (MD = 0.40 kg/m 2 , 95% CI − 0.03 to 0.83) produced greater improvements than those delivered twice per week (MD = 0.00 kg/m 2 , 95% CI − 0.07 to 0.07), although the within-subgroup effects did not reach statistical significance.

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