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 .
Effects of muscle-strength training on the functional status of patients with osteoarthritis of the knee joint.
This study was design ed to determine whether an 8-week isokinetic muscle-strength-training program improved the functional health status of patients with osteoarthritis of the knee joint . Twenty volunteers with osteoarthritis of the knee joint were r and omly assigned to either an experimental ( n=10 ) or control ( n=10 ) group . The experimental group completed six sets of five maximal contractions three times per week for 8 weeks on a Cybex II dynamometer at 90 degrees per second . Both groups were pre- and posttest for extension and flexion strength of the right and left legs , the 50-foot walk time , range of motion at the knee joint , the Osteoarthritis Screening Index ( OASI ) , and the Arthritis Impact Measurement Scale ( AIMS ) . There was a significant decrease in pain and stiffness , and a significant increase in mobility . There was also a significant decline in arthritis activity in the experimental group as measured by the OASI and AIMS . The experimental group significantly increased in all strength measures , while the control group increased in only right leg flexion and left leg extension across the training period
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 .