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Appears in Collections:Psychology Journal Articles
Peer Review Status: Refereed
Title: How can interventions increase motivation for physical activity? A systematic review and meta-analysis (Forthcoming/Available Online)
Authors: Knittle, Keegan
Nurmi, Johanna
Crutzen, Rik
Hankonen, Nelli
Beattie, Marguerite
Dombrowski, Stephan U
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Keywords: Meta-analysis
physical activity
stage of change
autonomous motivation
behavior change techniques
Issue Date: 31-Jan-2018
Citation: Knittle K, Nurmi J, Crutzen R, Hankonen N, Beattie M & Dombrowski SU (2018) How can interventions increase motivation for physical activity? A systematic review and meta-analysis (Forthcoming/Available Online), Health Psychology Review.
Abstract: Motivation is a proximal determinant of behavior, and increasing motivation is central to most health behavior change interventions. This systematic review and meta-analysis sought to identify features of physical activity interventions associated with favorable changes in three prominent motivational constructs: intention, stage of change and autonomous motivation. A systematic literature search identified 89 intervention studies (k=200; N=19,212) which assessed changes in these motivational constructs for physical activity. Intervention descriptions were coded for potential moderators, including behavior change techniques (BCTs), modes of delivery and theory use. Random effects comparative subgroup analyses identified 18 BCTs and 10 modes of delivery independently associated with changes in at least one motivational outcome (effect sizes ranged from d=0.12 to d=0.74). Interventions delivered face-to-face or in gym settings, or which included the BCTs ‘behavioral goal setting’, ‘self-monitoring (behavior)’ or ‘behavioral practice/rehearsal’, or which combined self-monitoring (behavior) with any other BCT derived from control theory, were all associated with beneficial changes in multiple motivational constructs (effect sizes ranged from d=0.12 to d=0.46). Meta-regression analyses indicated that increases in intention and stage of change, but not autonomous motivation, were significantly related to increases in physical activity. The intervention characteristics associated with changes in motivation seemed to form clusters related to behavioral experience and self-regulation, which have previously been linked to changes in physical activity behavior. These BCTs and modes of delivery merit further systematic study, and can be used as a foundation for improving interventions targeting increases in motivation for physical activity.
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