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 counselling patients on physical activity in general practice: cluster randomised controlled trial
Abstract Objective : To assess the long term effectiveness of the “ green prescription ” programme , a clinician based initiative in general practice that provides counselling on physical activity . Design : Cluster r and omised controlled trial . Practice s were r and omised before systematic screening and recruitment of patients . Setting : 42 rural and urban general practice s in one region of New Zeal and . Subjects : All sedentary 40–79 year old patients visiting their general practitioner during the study 's recruitment period . Intervention : General practitioners were prompted by the patient to give oral and written advice on physical activity during usual consultations . Exercise specialists continued support by telephone and post . Control patients received usual care . Main outcome measures : Change in physical activity , quality of life ( as measured by the “ short form 36 ” ( SF-36 ) question naire ) , cardiovascular risk ( Framingham and D'Agostino equations ) , and blood pressure over a 12 month period . Results : 74 % ( 117/159 ) of general practitioners and 66 % ( 878/1322 ) of screened eligible patients participated in the study . The follow up rate was 85 % ( 750/878 ) . Mean total energy expenditure increased by 9.4 kcal/kg/week ( P=0.001 ) and leisure exercise by 2.7 kcal/kg/week ( P=0.02 ) or 34 minutes/week more in the intervention group than in the control group ( P=0.04 ) . The proportion of the intervention group undertaking 2.5 hours/week of leisure exercise  increased by 9.72 % ( P=0.003 ) more than in the control group ( number needed to treat=10.3 ) . SF-36 measures of self rated “ general health , ” “ role physical , ” “ vitality , ” and “ bodily pain ” improved significantly more in the intervention group ( P<0.05 ) . A trend towards decreasing blood pressure became apparent but no significant difference in four year risk of coronary heart disease . Conclusion : Counselling patients in general practice on exercise is effective in increasing physical activity and improving quality of life over 12 months . What is already known on this topic Counselling patients in general practice on exercise has result ed in gains in physical fitness and activity , but no health benefits have been found What this study adds Counselling patients in general practice on exercise is effective in increasing physical activity and improving quality of life over 12 months without evidence of adverse effects The intervention may reduce blood pressure by an average of 1–2 mm Hg over 12 months No changes in the risk of coronary heart disease were observed The intervention is sustainable in usual general practice Prompting practice staff to deliver the intervention may have increased its
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 .