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 .
Long-term exercise and its effect on balance in older, osteoarthritic adults: results from the Fitness, Arthritis, and Seniors Trial (FAST).
OBJECTIVES To examine the effects of 18-month aerobic walking and strength training programs on static postural stability among older adults with knee osteoarthritis . DESIGN R and omized , single-blind , clinical trial of therapeutic exercise . SETTING Both center-based ( university ) and home-based . PARTICIPANTS A cohort of 103 older adults ( age = 60 years ) with knee osteoarthritis who were participants in a large ( n = 439 ) clinical trial and who were r and omly assigned to undergo biomechanical testing . INTERVENTION An 18-month center- ( 3 months ) and home-based ( 15 months ) therapeutic exercise program . The subjects were r and omized to one of three treatment arms : ( 1 ) aerobic walking ; ( 2 ) health education control ; or ( 3 ) weight training . MEASUREMENTS Force platform static balance measures of average length ( Rm ) of the center of pressure ( COP ) , average velocity ( Vel ) of the COP , elliptical area ( Ae ) of the COP , and balance time ( T ) . Measures were made under four conditions : eyes open , double- and single-leg stances and eyes closed , double- and single-leg stances . RESULTS In the eyes closed , double-leg stance condition , both the aerobic and weight training groups demonstrated significantly better sway measures relative to the health education group . The aerobic group also demonstrated better balance in the eyes open , single-leg stance condition . CONCLUSIONS Our results suggest that long-term weight training and aerobic walking programs significantly improve postural sway in older , osteoarthritic adults , thereby decreasing the likelihood of larger postural sway disturbances relative to a control group
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 .