The heterogeneity in reported effects was reduced in higher quality studies , when physical activity was self-directed with some professional guidance and when there was on-going professional support .
Our review suggests that physical activity interventions have a moderate effect on self reported physical activity and cardio-respiratory fitness , but not on achieving a predetermined level of physical activity .
Due to the clinical and statistical heterogeneity of the studies , only limited conclusions can be drawn about the effectiveness of individual components of the interventions .
BACKGROUND Little is known about the effectiveness of strategies to enable people to achieve an increase in their physical activity .
OBJECTIVES To assess the effects of interventions for promoting physical activity in adults aged 16 years and older , not living in an institution .
Randomized controlled trial of exercise training for older people (Sendai Silver Center Trial; SSCT): study design and primary outcome.
Physical exercise is expected to improve and maintain physical function in older people , thus promoting health and preventing or postponing the onset of disability in later life . The Sendai Silver Center Trial ( SSCT ) was a r and omized controlled trial design ed to evaluate the efficacy of exercise training among healthy free-living older people . Sixty-five eligible participants , aged from 60 to 81 years , were r and omly allocated to an exercise group or a control group . The subjects in the exercise group were asked to attend training classes at the Sendai Silver Center , a municipal health and welfare facility in the center of Sendai City , at least twice a week for 25 weeks . Each training class , lasting two hours , started with a warm-up session , followed by an endurance session with a bicycle ergometer , and a resistance exercise training session using rubber films , and ended with a cool-down session . The subjects in the control group were asked to attend recreational classes at the Center twice a month . There were no drop-outs or accidents during the intervention . Comparison of maximum oxygen consumption ( VO2max ) before and after the 25-week intervention revealed a significant increase in the exercise group ( 2.1 ml/kg/min ) but no significant change in the control group . Our result is equivalent to the participants becoming younger in aerobic capacity by five years after six months of exercise training
The heterogeneity in reported effects was reduced in higher quality studies , when physical activity was self-directed with some professional guidance and when there was on-going professional support .
Our review suggests that physical activity interventions have a moderate effect on self reported physical activity and cardio-respiratory fitness , but not on achieving a predetermined level of physical activity .
Due to the clinical and statistical heterogeneity of the studies , only limited conclusions can be drawn about the effectiveness of individual components of the interventions .
BACKGROUND Little is known about the effectiveness of strategies to enable people to achieve an increase in their physical activity .
OBJECTIVES To assess the effects of interventions for promoting physical activity in adults aged 16 years and older , not living in an institution .