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Table 1 Operationalisation of the SCT Constructs relevant to this study

From: Feasibility, acceptability and efficacy of a web-based computer-tailored physical activity intervention for pregnant women - the Fit4Two randomised controlled trial

Module 1
Strategy SCT construct Tailoring variables
Advice for meeting the PA guidelines Self-efficacy PA status
PA level prior to pregnancy
Information about the beneficial outcomes of PA, exercise during pregnancy guidelines, resistance-based exercise guidelines and stretching Outcome expectations Outcome expectancies (outcomes valued by individual)
Advice and information on BMI classifications Self-efficacy
Behavioural capability
Outcome expectations
Behavioural capability
Outcome expectancies (outcomes valued by individual)
Advice on exercise intensity Self-efficacy PA status
Current PA level
Advice on exercising safely Self-efficacy
Behavioural capability
Outcome expectations
Behavioural capability
Outcome expectancies (outcomes valued by individual)
Action planning Self-efficacy
Self-control and performance
PA status
PA preference
Module 2
Feedback on PA performance Self-efficacy
Self-control and performance
Reinforcement
PA status
PA progress since M1
Advice on overcoming possible barriers to exercise during pregnancy Environment
Self-efficacy
Self-control and performance
Self-discipline
Time
Health/illness
Tired and exhausted
Motivation
Social Support
Knowledge
Environment
Action planning Self-efficacy
Self-control and performance
Goal setting behaviour after M1
PA status
Module 3
Strategy SCT construct Tailoring variables
Feedback on PA performance Self-efficacy
Self-control and performance
Reinforcement
PA status
PA progress since M1 and M2
Advice and tips on increasing social support to exercise during pregnancy Environment
Self-efficacy
Self-control and performance
Partner Family and Friends Work colleagues
Action planning Self-efficacy
Self-control and performance
Goal setting behaviour after M1 and M2
PA status
Module 4
Feedback on PA performance Self-efficacy
Self-control and performance
Reinforcement
PA status
PA progress since M1, M2 and M3
Reminder on Exercise during pregnancy guidelines and recommendations Self-efficacy
Self-control and performance
Reinforcement
PA status
PA progress since M1, M2 and M3
Action planning Self-efficacy
Self-control and performance
Goal setting behaviour after M1, M2 and M3
PA status