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 .
Effectiveness of telephone support in increasing physical activity levels in primary care patients.
BACKGROUND Physician counseling of patients  to increase physical activity has had limited success in changing behavior . Providing organizational support to primary care providers and their patients may increase effectiveness . OBJECTIVE This study evaluates the effectiveness of a telephone-based intervention to increase physical activity  among patients who exercised < 15 minutes daily and wanted to increase their physical activity over a 6-month period . DESIGN This was a r and omized controlled trial , conducted from 1997 to 1998 , of 316 patients aged 18 to 65 who were recruited from a mailed health risk assessment . Baseline and 6-month post-intervention telephone assessment s were conducted by telephone . SETTING One family physician 's patients in a suburban community . INTERVENTION Three sessions of telephone-delivered motivational counseling . MAIN OUTCOME MEASURES Physical activity score ( 11-item Physician-Based Assessment and Counseling for Exercise [ PACE ] ) 6 months after the intervention . RESULTS After adjusting for baseline exercise , there was a significantly higher level of self-reported exercise among individuals r and omized to the intervention at the 6-month follow-up . The mean level of activity at follow-up for the intervention group was a PACE score of 5.37 , compared to 4.98 in the control group ( p<0.05 ) . In the secondary analysis , which was limited to individuals who received the intervention , the effect was stronger ( PACE score of 5.58 compared to 4.94 , p<0.013 ) . CONCLUSIONS Patients can be recruited using a health-screening question naire to receive a telephone-delivered behavioral intervention to successfully increase their physical activity levels
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 .