A prospective study exploring the construct and predictive validity of the COM-B model for physical activity. (September 2019)

• Record Type: Journal Article
• Authors: Howlett, Neil; Schulz, Joerg; Trivedi, Daksha; Troop, Nicholas; Chater, Angel
• Is Part Of: Journal of health psychology. Volume 24:Number 10(2019)
• Page Start: 1378
• Page End: 1391
• Publication Date: 2019-09
• Subjects: COM-B -- health behaviour -- physical activity -- theoretical domains framework; Clinical health psychology -- Periodicals; 613.019
• DOI: 10.1177/1359105317739098
• Languages: English
• ISSNs: 1359-1053

Abstract

This study examined the constructs of capability, opportunity and motivation from the COM-B model and their influence on moderate-to-vigorous physical activity. Using a prospective survey design, 186 healthy adults completed measures representing the theoretical domains framework mapped to the COM-B, and moderate-to-vigorous physical activity 1 week later. The main indicators for the COM constructs were 'habits' (Capability), 'subjective norms' (Opportunity) and 'exercise self-identity' (Motivation). Motivation (77%) and moderate-to-vigorous physical activity (50%) were strongly predicted, with Capability and Motivation as key drivers of behaviour. Motivation was a strong mediator for Capability on behaviour. Future research should consider this approach for other populations and behaviours.