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 .
A randomized controlled trial of progressive resistance training in depressed elders.
BACKGROUND Depression in elderly people may be contributed to by the multiple losses of aging . Exercise has the potential to positively impact many of these losses simultaneously . We tested the hypothesis that progressive resistance training ( PRT ) would reduce depression while improving physiologic capacity , quality of life , morale , function and self-efficacy without adverse events in an older , significantly depressed population . METHODS We conducted a 10-week r and omized controlled trial of volunteers aged 60 and above with major or minor depression or dysthymia . Subjects were r and omized for 10 weeks to either a supervised PRT program three times a week or an attention-control group . RESULTS A total of 32 subjects aged 60 - 84 , mean age 71.3 + /- 1.2 yr , were r and omized and completed the study . No significant adverse events occurred . Median compliance was 95 % . PRT significantly reduced all depression measures ( Beck Depression Inventory in exercisers 21.3 + /- 1.8 to 9.8 + /- 2.4 versus controls 18.4 + /- 1.7 to 13.8 + /- 2 , p = .002 ; Hamilton Rating Scale of Depression in exercisers 12.3 + /- 0.9 to 5.3 + /- 1.3 versus controls 11.4 + /- 1.0 to 8.9 + /- 1.3 , p = .008 ) . Quality of life subscales of bodily pain ( p = .001 ) , vitality ( p = .002 ) , social functioning ( p = .008 ) , and role emotional ( p = .02 ) were all significantly improved by exercise compared to controls . Strength increased a mean of 33 % + /- 4 % in exercisers and decreased 2 % + /- 2 % in controls ( p < .0001 ) . In a multiple stepwise regression model , intensity of training was a significant independent predictor of decrease in depression scores ( r2 = .617 , p = .0002 ) . CONCLUSIONS PRT is an effective antidepressant in depressed elders , while also improving strength , morale , and quality of life
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 .