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▸ Conn VS, Hafdahl AR, Mehr DR. Interventions to increase physical activity among healthy adults: meta analysis of outcomes. Am J Public Health 2011;101:751–8.
Background
Despite ample evidence showing links between physical activity (PA) and important health outcomes, many adults get too little PA. Most meta-analyses to date have focused on the health outcomes of PA while only few have addressed the question of whether interventions actually increase PA itself.
Aims
The authors conducted a systematic review and meta-analysis to estimate the overall effects of PA interventions on PA behaviour. The secondary aim was to identify intervention characteristics associated with best outcomes.
Searches and inclusion criteria
Comprehensive searches of 13 databases (incl. Medline, SCOPUS, NIH registries) were conducted by an expert reference librarian. This was supplemented by hand-searches of 82 journals and ancestry searches and author tracking for reviews and included studies. Over 54 000 titles were identified and screened for inclusion.
English language reports of interventions to increase PA among healthy adults were included. Controlled and uncontrolled longitudinal studies were included, although only controlled …