Streamlining COM-B model: Insights from the Healthy Eating Context.

The global rise in diet-related diseases highlights the urgent need for effective behavioural interventions. While theoretical frameworks like the Capability, Opportunity, Motivation-Behaviour (COM-B) model are valuable for understanding and influencing healthy eating behaviours, their practical application is often hindered by complexity and extensive measurement demands. This study addresses these challenges by testing a simplified version of the COM-B model, focusing on a select set of items representing seven core constructs. We conducted a cross-sectional survey with 347 Australian young adults to validate this streamlined model, making it more accessible for researchers and practitioners. Our findings underscore the importance of automatic motivation, the physical environment, and physical capability as critical factors in promoting healthy eating behaviours. By simplifying the COM-B model, this research contributes to developing more practical and effective strategies for healthier eating, addressing a critical public health issue.