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Table 1 Topics, tailoring items and TPB constructs of the computer-tailored physical activity advice

From: My Activity Coach– Using video-coaching to assist a web-based computer-tailored physical activity intervention: a randomised controlled trial protocol

Module Topic Tailoring variables TPB construct
Module 1: ‘Are you active enough?’ Physical Activity guidelines None Attitude
Normative feedback (also in Graph format), compares participants physical activity to recommendations Current physical activity levels Subjective norms
Physical activity sessions Current physical activity levels and number of activity sessions each week Subjective norms
Importance of physical activity, tailored to current activity levels, BMI and age. Current physical activity levels, BMI and age Attitude
Task self-efficacy Current physical activity levels, and perceived difficulty with meeting the guidelines PBC
Benefits Top two most important benefits of becoming more active Attitude
Suggested goal increase in physical activity Current physical activity levels Intention
Module 2: ‘Let’s set some goals!’ Feedback on physical activity changes Physical activity levels at module 1 and 2 PBC
Coping self-efficacy Current physical activity levels, and perceived difficulty with meeting the guidelines when not feeling great, busy, and/or do not have an activity buddy PBC
Goal setting Current physical activity levels, and experience and knowledge of goal setting Intention
Action plans Current physical activity levels Intention
Module 3: ‘Physical activity and your environment’ Feedback on physical activity changes Physical activity levels at module 2 and 3 PBC
Feedback on progress to meeting action plan Success at meeting action plan set after module 2 PBC
Scheduling self-efficacy Current physical activity levels, and perceived difficulty with scheduling times to get active PBC
Utilising physical environment to become more active Possession of a garden, distance to places regularly visited, working status, length of lunch break and facilities at work. PBC
Utilising social environment to become more active Activity levels of friends and family, support from friends and family, and presence of an activity buddy or sporting team Subjective norms
Module 4: ‘Staying active’ Feedback on physical activity changes Physical activity levels and number of activity sessions at module 1 and 4 PBC
Feedback on progress to meeting action plan Success at meeting action plan set after module 3 PBC
Barriers Top two most significant barriers to becoming more active PBC
Maintenance self-efficacy Current physical activity levels, and perceived difficulty with continuing to meet the guidelines PBC
  Relapse prevention Physical activity levels at module 1, 2, 3 and 4 Intentions
  1. PBC: Perceived Behavioural Control.