Mediators of physical activity behaviour change interventions among adults: a systematic review and meta-analysis.

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dc.contributor.authorRhodes, Ryan E.
dc.contributor.authorBoudreau, Patrick
dc.contributor.authorJosefsson, Karin W.
dc.contributor.authorIvarsson, Andreas
dc.date.accessioned2023-10-08T15:39:05Z
dc.date.available2023-10-08T15:39:05Z
dc.date.copyright2021en_US
dc.date.issued2021
dc.description.abstractAn understanding of physical activity through mediators of behaviour change is important to evaluate the efficacy of interventions. The purpose of this review is to update prior reviews with meta-analysis to evaluate the state of physical activity interventions that include proposed mediators of behaviour change. Literature was identified through searching for five key databases. Studies were eligible if they described a published experimental or quasi-experimental trial in English examining the effect of an intervention on physical activity behaviour and mediators in non-clinical adult populations with the necessary statistical information to be included in the meta-analytic structural equation modelling analysis. Fifty-one articles (49 samples) met the eligibility criteria. Small overall effects were identified for mediation paths a (r = .16; 95% CI = .10 to .22), b (r = .21; 95% CI .16 to .27), and c (r = .24; 95% CI .12 to .35), c' (r = .05 to .19) and ab (r = .02 to .07) that showed similar findings by theory and construct. The effect sizes seen in physical activity interventions are mediated by our current theories, but the effects are very small and no one construct/theory appears to be a critical driver of the mediated effect compared to any other. Innovation and increased fidelity of interventions is needed.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipRER is supported by funds from the Canadian Institutes of Health Research, the Canadian Cancer Society, the Social Sciences and Humanities Research Council of Canada, and the Heart and Stroke Foundation of Canada.en_US
dc.identifier.citationRhodes, R. E., Boudreau, P., Josefsson, K. W., & Ivarsson, A. (2021). Mediators of physical activity behaviour change interventions among adults: a systematic review and meta-analysis. Health psychology review, 15(2), 272–286. https://doi.org/10.1080/17437199.2019.1706614en_US
dc.identifier.urihttps://doi.org/10.1080/17437199.2019.1706614
dc.identifier.urihttp://hdl.handle.net/1828/15499
dc.language.isoenen_US
dc.publisherHealth Psychology Reviewen_US
dc.rightsAttribution-NonCommercial 2.5 Canada*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/2.5/ca/*
dc.subjectExercise interventionsen_US
dc.subjectExercise social cognitive theoryen_US
dc.subjectTranstheoretical modelen_US
dc.subjectTheory of planned behavioren_US
dc.subjectSelf-determination theoryen_US
dc.titleMediators of physical activity behaviour change interventions among adults: a systematic review and meta-analysis.en_US
dc.typePostprinten_US

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