Serious adverse events were rare , and no serious events were reported to be directly related to the exercise programme .
This review provides evidence that PRT is an effective intervention for improving physical functioning in  older people , including improving strength and the performance of some simple and complex activities .
BACKGROUND Muscle weakness in old age is associated with physical function decline .
Progressive resistance strength training ( PRT ) exercises are design ed to increase strength .
OBJECTIVES To assess the effects of PRT on older people and identify adverse events .
Etiology and modification of gait instability in older adults: a randomized controlled trial of exercise.
Increased gait instability is common in older adults , even in the absence of overt disease . The goal of the present study was to quantitatively investigate the factors that contribute to gait instability and its potential reversibility in functionally impaired older adults . We studied 67 older men and women with functional impairment before and after they participated in a r and omized placebo-controlled , 6-mo multimodal exercise trial .  We found that 1 ) gait instability is multifactorial ; 2 ) stride time variability is strongly associated with functional status and performance-based measures of function that have previously been shown to predict significant clinical outcomes such as morbidity and nursing home admission ; 3 ) neuropsychological status and health-related quality of life play important , independent roles in gait instability ; and 4 ) improvement in physiological capacity is associated with reduced gait instability . Although the etiology of gait instability in older persons with mild-moderate functional impairment is multifactorial , interventions design ed to reduce gait instability may be effective in bringing about a more consistent and more stable walking pattern
Serious adverse events were rare , and no serious events were reported to be directly related to the exercise programme .
This review provides evidence that PRT is an effective intervention for improving physical functioning in  older people , including improving strength and the performance of some simple and complex activities .
BACKGROUND Muscle weakness in old age is associated with physical function decline .
Progressive resistance strength training ( PRT ) exercises are design ed to increase strength .
OBJECTIVES To assess the effects of PRT on older people and identify adverse events .