A prospective study exploring the construct and predictive validity of the COM-B model for physical activity

N Howlett, J Schulz, D Trivedi… - Journal of health …, 2019 - journals.sagepub.com
Journal of health psychology, 2019journals.sagepub.com
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 …
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.
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