Serious adverse events were rare , and no serious events were reported to be directly related to the exercise programme .
This review provides evidence that PRT is an effective intervention for improving physical functioning in  older people , including improving strength and the performance of some simple and complex activities .
BACKGROUND Muscle weakness in old age is associated with physical function decline .
Progressive resistance strength training ( PRT ) exercises are design ed to increase strength .
OBJECTIVES To assess the effects of PRT on older people and identify adverse events .
High-velocity resistance training increases skeletal muscle peak power in older women.
OBJECTIVES Peak power declines more precipitously than strength with advancing age and is a reliable measure of impairment and a strong predictor of functional performance . We tested the hypothesis that a high-velocity resistance-training program ( HI ) would increase muscle power more than a traditional low-velocity resistance-training program ( LO ) . DESIGN R and omized controlled trial . SETTING University-based human physiology laboratory . PARTICIPANTS Thirty women with self-reported dis-ability ( aged 73 + 1 , body mass index 30.1 + 1.1 kg/mn ) . INTERVENTION We conducted a r and omized trial comparing changes in skeletal muscle power and strength after 16 weeks of HI or LO . Training was performed three times per week , and subjects completed three sets ( 8 - 10 repetitions ) of leg press ( LP ) and knee extension ( KE ) exercises at 70 % of the one-repetition maximum ( IRM ) . MEASUREMENTS One-repetition maximum ( 1 RM ) and peak power for KE and LP . RESULTS LP and KE relative training force and total work were similar between groups ( P > .05 ) . However , HI generated significantly higher power during training sessions than LO for LP ( 3.7-fold greater , P < .001 ) and KE ( 2.1-fold greater , P < .001 ) . Although LP and KE 1RM muscle strength increased similarly in both groups asa result of the training ( P < .001 ) , LP peak power increased significantly more in HI than in LO ( 267 W vs 139 W , P < .001 ) . Furthermore , HI result ed in a significantly greater improvement in LP power at 40 % , 50 % , 60%,70 % , 80 % , and 90 % of the 1 RM than did LO ( P < .05 ) . CONCLUSIONS HI improved 1RM strength similarly and was more effective in improving peak power than was traditional LO in older women . Improvements in lower extremity peak power may exert a greater influence on age-associated reductions in physical functioning than other exercise interventions
Serious adverse events were rare , and no serious events were reported to be directly related to the exercise programme .
This review provides evidence that PRT is an effective intervention for improving physical functioning in  older people , including improving strength and the performance of some simple and complex activities .
BACKGROUND Muscle weakness in old age is associated with physical function decline .
Progressive resistance strength training ( PRT ) exercises are design ed to increase strength .
OBJECTIVES To assess the effects of PRT on older people and identify adverse events .