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 .
Comparison of High and Moderate Intensity of Strength Training on Mood and Anxiety in Older Adults
This study was design ed to examine the psychological benefits of anaerobic exercise for older adults . Specifically , strength training was employed to examine the effects on mood and anxiety in a group of healthy but sedentary older women . 36 women ( mean age = 68.5 yr . ) were r and omly assigned to groups given high intensity or moderate intensity strength training or to a control group . Strength training was conducted three days a week for 12 weeks . After the training period , both high and moderate strength-training programs produced marked improvements in muscle strength and body composition compared to the control subjects . The average improvements in the high and moderate intensity strength-training groups for muscle strength were 40.5 and 35.5 % , respectively , and for percent body fat 1.52 and 2.50 % , respectively . As for psychological changes , both training groups significantly improved positive mood ( vigor ) , and the moderate intensity group significantly reduced trait anxiety compared to means of the control group . Also , both training groups showed some decrease in tension and state anxiety after the training period . These findings provide evidence for the effectiveness of anaerobic training to enhance perception of psychological well-being in older women . A moderate intensity rather than high intensity of training regimen may be more beneficial for sedentary older women to improve psychological health
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 .