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Table 1 List of intervention components and associated dosage, behavior change strategies, and hypothesized mediators

From: Promoting physical activity in children through family-based intervention: protocol of the “Active 1 + FUN” randomized controlled trial

Intervention components Dose Description Behavior Change techniques using Michie et al.’s [40] taxonomy Hypothesized mediators
1. Interactive workshop Ten 30-min biweekly sessions Storytelling will be the critical teaching strategy for the workshops. There will be different stories and themes for each of the workshop; for instance, the key concepts of SDT and the ‘SAAFE’ teaching principle, the importance and benefits of the routinizing physical activity. A strong focus will be on ways to increase parent’s need support and reduce controlling behaviors, in which the differences between supportive and controlling behaviors will be illustrated with real-life examples. - Goals and planning
- Feedback and monitoring
- Social support
- Shaping knowledge
- Natural consequences
- Repetition and substitution
- Identity
- Need support/ controlling behaviors
- Competence
- Autonomy
- Relatedness
- Autonomous motivation
2. Activity session Ten 60-min biweekly sessions Parents and children will attend activity sessions together. Sessions include rough and tumble play, and FMS training. - Feedback and monitoring
- Social support
- Shaping knowledge
- Comparison of behavior
- Repetition and substitution
- Need support/ controlling behaviors
- Competence
- Autonomy
- Relatedness
- Autonomous motivation
3. Parent-child physical activity homework Weekly parent-child physical activity sessions outside the program (accumulate at least 30 min) Parents and children are encouraged to plan, set goals regarding parent-child physical activities and spend at least 30 min (accumulative) per week to engage in any kind of physical activities together. - Goals and planning
- Feedback and monitoring
- Social support
- Repetition and substitution
- Self-belief
- Competence
- Autonomy
4. Activity planning consultation Two 15-min session during intervention period The MVPA and FMS measurement results and feedback will be sent to the participants via WhatsApp. A trained research assistant will help families identify gaps in time to fit in family activities, and overcome barriers they may have encountered. - Goals and planning
- Feedback and monitoring
- Social support
- Repetition and substitution
- Self-belief
- Competence
- Autonomy
5. Easy sports equipment One set per family A set of equipment including skipping rope, soft volleyball, sponge flying disc, etc. - Antecedents
- Self-belief
- Competence
- Autonomy
6. Online materials Participants can view the online resources with their gadgets any time anywhere they want. Descriptions about the required FMS in various kinds of sports will be provided. Participants can easily make comparisons between different sports and reflect on their own strengths and weaknesses.