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To examine the effects of 12 weeks of high-speed resistance training (RT) versus low-speed RT on muscle strength [one repetition of maximum leg-press (1RM_LP) and bench-press (1RM_BP), plus dominant (HGd) and non-dominant maximum isometric handgrip], power [counter-movement jump (CMJ), ball throwing (BT) and 10-m walking sprint (S10)], functional performance [8-foot up-and-go test (UG) and sit-to-stand test (STS)], and perceived quality of life in older women.

45 older women were divided into a high-speed RT group [EG, n = 15, age = 66.3 ± 3.7 y], a low-speed RT group [SG, n = 15, age = 68.7 ± 6.4 y] and a control group [CG, n = 15, age = 66.7 ± 4.9 y]. The SG and EG were submitted to a similar 12-week RT program [3 sets of 8 reps at 40–75% of the one-repetition maximum (1 < RM), CMJ and BT] using slow, controlled (3 s) concentric muscle actions for the SG and using fast …