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Table 2 COM-B analysis demonstrating intervention functions and BCTs to change diet in target population

From: Development of a peer support intervention to encourage dietary behaviour change towards a Mediterranean diet in adults at high cardiovascular risk

Barriers to adopting a MD in adults at high CVD risk [28] COM-B analysis Intervention functions BCTs [23] to best serve intervention functions
Lack of knowledge about the types/proportions of foods consumed Psychological capability Education Training Enablement Instruction on how to perform the behaviour Demonstration of the behaviour
Limited cooking skills to prepare meals Physical capability Training Enablement Instruction on how to perform the behaviour Behavioural practice Demonstration of the behaviour
Resistance to change eating habits established since childhood, especially to reduce intake of red/processed meats and sweet foods Automatic motivation Modelling Persuasion Enablement Social support (unspecified) Problem-solving Goal setting (behaviour) Action planning Feedback on behaviour Set graded tasks
Increased cost for purchasing key foods especially olive oil, nuts and fruits and vegetables Physical opportunity Training Enablement Instruction on how to perform the behaviour Demonstration of the behaviour
Increased time to prepare meals owing to busy lifestyles Physical opportunity Training Enablement Instruction on how to perform the behaviour Demonstration of the behaviour
Limited availability of fresh foods especially fresh fish, fruit and vegetables Physical opportunity Training Enablement Instruction on how to perform the behaviour
Lack of understanding about the health benefits of adopting a MD Psychological capability Education Training Enablement Information about health consequences Biofeedback
Negative attitude toward increasing total fat intake Reflective motivation Education Persuasion Information about health consequences Instruction on how to perform the behaviour Demonstration of the behaviour
Cold climate making it difficult to eat foods such as salads, fruit and vegetables Physical opportunity Training Enablement Social support (unspecified) Verbal persuasion Problem-solving
Cultural norms making it difficult to change dietary behaviour Social opportunity Modelling Enablement Instruction on how to perform the behaviour Demonstration of the behaviour
Negative attitude toward the taste of key foods especially olive oil, nuts and fish Reflective motivation Education Persuasion Instruction on how to perform the behaviour Demonstration of the behaviour Social support (unspecified)
  1. MD Mediterranean diet, CVD Cardiovascular, COM-B Capability, Opportunity, Motivation – Behaviour Model, BCTs Behaviour Change Techniques