PRT had a large positive effect on strength ( 41 trials , 1955 participants ) , but there was statistical heterogeneity that was not explained by differences in study quality , participant characteristics or the exercise program .
REVIEW ER 'S CONCLUSIONS PRT appears to be an effective intervention to increase strength in older people and has a positive effect on some functional limitations .
However , the effect of this intervention on more substantive outcomes such as measures of disability or HRQOL remains unclear .
BACKGROUND Muscle weakness in old age , is associated with physical disability and an increased risk of falls .
Progressive resistance strength ( PRT ) training exercises ( i.e. movements performed against a specific external force that is regularly increased during training ) are design ed to increase strength in older people .
OBJECTIVES To assess the effect of PRT on measures of physical disability , functional limitation and impairment in older people  , and identify adverse events .
Comparative effects of two physical activity programs on measured and perceived physical functioning and other health-related quality of life outcomes in older adults.
BACKGROUND Although inactivity is an important contributor to impaired functioning and disability with age , little is known concerning how improvements in physical functioning and well-being in older adults vary with the type of physical activity undertaken . METHODS One hundred three adults age 65 years and older , recruited via population -based methods , were r and omized to 12 months of community-based , moderate-intensity endurance and strengthening exercises ( Fit & Firm ) or stretching and flexibility exercises ( Stretch & Flex ) . A combination of class- and home-based exercise formats was used . Measured and self-rated physical performance along with perceived functioning and well-being were assessed pre- and postintervention . RESULTS Fit & Firm subjects showed greater 12-month improvements in both measured and self-rated endurance and strength compared to Stretch & Flex subjects . Stretch & Flex subjects reported greater improvements in bodily pain , and Stretch & Flex men evidence d greater improvements in flexibility relative to Fit & Firm subjects . Although overall exercise adherence was high in both exercise conditions ( approximately 80 % ) , subjects in both conditions showed better adherence to the home- versus class-based portions of their exercise prescriptions . CONCLUSIONS Community-based programs focusing on moderate-intensity endurance and strengthening exercises or flexibility exercises can be delivered through a combination of formats that result in improvement in important functional and well-being outcomes . This represents one of the first studies to report significant improvements in an important quality of life outcome -bodily pain-with a regular regimen of stretching and flexibility exercises in a community-based sample of older adults
PRT had a large positive effect on strength ( 41 trials , 1955 participants ) , but there was statistical heterogeneity that was not explained by differences in study quality , participant characteristics or the exercise program .
REVIEW ER 'S CONCLUSIONS PRT appears to be an effective intervention to increase strength in older people and has a positive effect on some functional limitations .
However , the effect of this intervention on more substantive outcomes such as measures of disability or HRQOL remains unclear .
BACKGROUND Muscle weakness in old age , is associated with physical disability and an increased risk of falls .
Progressive resistance strength ( PRT ) training exercises ( i.e. movements performed against a specific external force that is regularly increased during training ) are design ed to increase strength in older people .
OBJECTIVES To assess the effect of PRT on measures of physical disability , functional limitation and impairment in older people  , and identify adverse events .