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 and balance in aged women: a pilot controlled clinical trial.
A pilot controlled trial was conducted to determine the feasibility of testing an exercise program as a means of improving balance in aged women . A r and om sample of 50 women more than 65 years old was recruited from two apartment buildings . The buildings were r and omized to serve as exercise and control sites . The 24 exercisers did not differ significantly from the 26 controls except that they were better educated and had better vision . The median compliance was 85 % of requested sessions attended by the exercisers . Follow-up measures were obtained in 92 % and 81 % of the exercise and control groups , respectively . The outcome variables studied were changes in sway ( areas and velocity of the center of force as measured using a biomechanics platform ) in four stances with eyes open or closed , on two feet , or on one foot . After 16 weeks , in stances on one foot , exercisers had smaller areas compared to controls with eyes open , but larger areas with eyes closed . Subgroup analysis indicated that compliance with the exercise program was a determinant of degree of change in the area measures . The inconsistent effect of exercise on area measures of sway in this study may be due to ( a ) lack of statistical power to detect between-group differences , ( b ) inadequate compliance with the exercise program , ( c ) baseline differences between the two groups at r and omization , and ( d ) ineffective or inadequate duration of the exercise program . We conclude that controlled clinical trials to study the effect of exercise on balance measures in community-dwelling elderly women are feasible . ( ABSTRACT TRUNCATED AT 250 WORDS
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 .