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 .
Physical activity and nutrition programs for couples: a randomized controlled trial.
Diet and physical activity habits may deteriorate after cohabitation , leading to weight gain and increased risk of lifestyle diseases . We carried out a 4-month , r and omized controlled trial of a diet and physical activity program for couples with a 1-year follow-up , comparing two methods of delivery . The program used six modules , which , after an initial group session , were mailed to the low-level intervention group .  In the high-level intervention group , half of the modules were mailed , and the others were delivered at interactive group sessions . A control group received no intervention . Postintervention and at follow-up , physical fitness improved in the high-level group , saturated fat intake decreased in both intervention groups , and low-density lipoprotein cholesterol fell in the high-level group . Fewer participants in the high-level group became overweight or obese . Health promotion for couples can improve health behaviors and potentially lower the risk of lifestyle diseases in participants and their future families
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 .