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 .
Exercise--it's never too late: the strong-for-life program.
OBJECTIVES This investigation determined whether an in-home resistance training program achieved health benefits in older adults with disabilities . METHODS A r and omized controlled trial compared the effects of assigning 215 older persons to either a home-based resistance exercise training group or a waiting list control group . Assessment s were conducted at baseline and at 3 and 6 months following r and omization . The program consisted of videotaped exercise routines performed with elastic b and s of varying thickness . RESULTS High rates of exercise adherence were achieved , with 89 % of the recommended exercise sessions performed over 6 months . Relative to controls , subjects who participated in the program achieved statistically significant lower extremity strength improvements of 6 % to 12 % , a 20 % improvement in t and em gait , and a 15 % to 18 % reduction in physical and overall disability at the 6-month follow-up . No adverse health effects were encountered . CONCLUSIONS These findings provide important evidence that home-based resistance exercise programs design ed for older persons with disabilities hold promise as an effective public health strategy
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 .