Matched or nonmatched interventions based on the transtheoretical model to promote physical activity. A meta-analysis of randomized controlled trials

作者：Romain Ahmed Jerome; Bortolon Catherine; Gourlan Mathieu; Carayol Marion; Decker Emmanuelle; Lareyre Olivier; Ninot Gregory; Boiche Julie; Bernard Paquito

来源：Journal of Sport and Health Science, 2018, 7(1): 50-57.

DOI：10.1016/j.jshs.2016.10.007

• Exercise
• Interventions
• Meta-regression
• Moderators
• Processes of change
• Stages of change
• Theory-based

Purpose: The aim of this study was to examine whether the efficacy of transtheoretical model (TTM)-based interventions on physical activity (PA) varied according to the following criteria: (1) interventions targeted the actual stages of change (SOCs) or did not; (2) participants were selected according to their SOC or were not; and (3) its theoretical constructs (decisional balance, temptation, self-efficacy, processes of change).
Methods: Thirty-three randomized controlled trials assessing TTM-based interventions promoting PA in adults were systematically identified.
Results: The between-group heterogeneity statistic (Qb) did not reveal any differential efficacy either in interventions targeting the actual SOC compared with those that did not (Qb = 1.48, p = 0.22) or in interventions selecting participants according to their SOC compared with those that did not (Qb = 0.01, p = 0.91). TTM-based interventions enhanced PA behavior whether they targeted the actual SOC (Cohen's d = 0.36; 95% confidence interval (CI): 0.22-0.49) or not (d = 0.23; 95% CI: 0.09-0.38) and whether they selected their participants according to their SOC (d = 0.33; 95% CI: 0.13-0.53) or not (d = 0.32; 95% CI: 0.19-0.44). The moderators of the efficacy of TTM-based interventions were the number of theoretical constructs used to tailor the intervention (Qb = 8.82, p = 0.003), the use of self-efficacy (Qb = 6.09, p = 0.01), and the processes of change (Qb = 3.51, p = 0.06).
Conclusion: TTM- based interventions significantly improved PA behavior, and their efficacy was not moderated by SOC but by the TTM theoretical constructs.

• 出版日期2018-1