PRT results in improvements to muscle strength and some aspects of functional limitation , such as gait speed , in older adults .
However , based on current data , the effect of PRT on physical disability remains unclear .
Further , due to the poor reporting of adverse events in trials , it is difficult to evaluate the risks associated with PRT
BACKGROUND The aim of this systematic review was to quantify the effectiveness of progressive resistance strength training ( PRT ) to reduce  physical disability in older people .
Effect of Resistance Training on Strength, Postural Control, and Gait Velocity among Older Adults
The purpose of this study was to examine the effects of a 14-week resistance training program on the anile strength training intensity , postural control , and gait velocity of older adults . Forty-two older adults ( mean age = 72 ) , 21 in the resistance and control groups , completed the 14-week project . The resistance training group participated in 14 weeks of resistance training three times per week using elastic b and s ( Therab and ) for resistance .  Isokinetic ankle strength , training intensity , postural stability , and gait velocity were measured prior to and following the 14-week intervention . Following the training , the resistance group exhibited improved ankle dorsiflexion , training resistances , and gait velocity , but showed no change in plantar flexion or postural control . The control group also exhibited improvements in dorsiflexion , but these gains were approximately one-half of the gains observed in the resistance training group . Finally , when adjusted for baseline differences , subjects in the resistance training group demonstrated no changes in the dependent measures over the control group
PRT results in improvements to muscle strength and some aspects of functional limitation , such as gait speed , in older adults .
However , based on current data , the effect of PRT on physical disability remains unclear .
Further , due to the poor reporting of adverse events in trials , it is difficult to evaluate the risks associated with PRT
BACKGROUND The aim of this systematic review was to quantify the effectiveness of progressive resistance strength training ( PRT ) to reduce  physical disability in older people .