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ERIC Number: EJ1139033
Record Type: Journal
Publication Date: 2017-Apr
Pages: 9
Abstractor: As Provided
ISSN: ISSN-1090-1981
Moderators of Theory-Based Interventions to Promote Physical Activity in 77 Randomized Controlled Trials
Bernard, Paquito; Carayol, Marion; Gourlan, Mathieu; Boiché, Julie; Romain, Ahmed Jérôme; Bortolon, Catherine; Lareyre, Olivier; Ninot, Gregory
Health Education & Behavior, v44 n2 p227-235 Apr 2017
A meta-analysis of randomized controlled trials (RCTs) has recently showed that theory-based interventions designed to promote physical activity (PA) significantly increased PA behavior. The objective of the present study was to investigate the moderators of the efficacy of these theory-based interventions. Seventy-seven RCTs evaluating theory-based interventions were systematically identified. Sample, intervention, methodology, and theory implementation characteristics were extracted, coded by three duos of independent investigators, and tested as moderators of interventions effect in a multiple-meta-regression model. Three moderators were negatively associated with the efficacy of theory-based interventions on PA behavior: intervention length (=14 weeks; ß = -0.22, p = 0.004), number of experimental patients (ß = -0.10, p = 0.002), and global methodological quality score (ß = -0.08, p = 0.04). Our findings suggest that the efficacy of theory-based interventions to promote PA could be overestimated consequently due to methodological weaknesses of RCTs and that interventions shorter than 14 weeks could maximize the increase of PA behavior.
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Publication Type: Journal Articles; Reports - Research; Information Analyses
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A