Many physical activity interventions have been proven effective in small, controlled studies. The purpose of this study was to review how effective interventions are when they are expanded – or ‘scaled-up’ – to real world settings. It found that most interventions remained effective when scaled up, although not as effective as the original interventions. The review also found that it was common for adaptations to be made to an intervention when it was scaled up. These outcomes provide valuable insight for researchers and public health practitioners interested in the design and scale-up of physical activity interventions.
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Lane C, McCrabb S, Nathan N, Naylor PJ, Bauman A, Milat A, Lum M, Sutherland R, Byaruhanga J, Wolfenden L. How effective are physical activity interventions when they are scaled-up: a systematic review. International Journal of Behavioral Nutrition and Physical Activity. 2021 Dec;18(1):1-1. https://ijbnpa.biomedcentral.com/articles/10.1186/s12966-021-01080-4