Table 2.

Description of RAW-PA objectives, theoretical approach and behaviour change techniques targeted

Week	Theme	Intervention objective	Determinants or mediatorsa	Behaviour change techniquesb[40]
1	Knowing is the First Step!	Familiarisation with the Fitbit® Flex	Knowledge	Self-monitoring behaviour
2	Build it Up!	Developing goal setting skills Identifying barriers to physical activity engagement	Self-efficacy Benefits/barriers	Goal-setting (behaviours) Problem solving
3	Pair Up!	Encourage friends/peers to increase their activity levels	Modelling behaviour Social support	Social support - practical Social support - emotional
4	The Happy Dance	Celebrating the achievement of set goals	Self-efficacy Benefits/barriers	Goal-setting (behaviours) Action planning Social reward
5	It’s a Social Movement	Providing social support for physical activity	Enjoyment Outcome expectations	Social support - practical Social support - emotional
6	Reach for the Stars!	Tracking activity levels across the day in comparison to sports stars	Enjoyment Self-monitoring and contracting	Problem solving Instruction on performing a behaviour Social comparison
7	Break it Up!	Identifying and sharing strategies for breaking up sitting time	Self-efficacy Modelling behavioural	Habit reversal Self-efficacy Social support - practical
8	Step it Up!	Evaluating and adjusting set goals	Self-efficacy Barriers/benefits	Focus on past success Review of outcome goals Set graded tasks
9	Buddy Up!	Support friends/family to increase their own physical activity	Modelling behaviour Enjoyment	Modelling behaviour Identification of self as role model
10	Mark it Up!	Identifying and sharing strategies for increasing steps at school Raising awareness of activity opportunities provided at school	Availability Access	Social support Social comparison Action planning
11	Globe Trotter	Evaluating set goals Reflecting on journey so far	Self-efficacy Outcome evaluations	Self-monitoring Review of outcome goals
12	Keep it Up!	Message reinforcement Confidence to be physically active	Knowledge Self-efficacy Benefits/barriers	Commitment Review of outcome and behavioural goals Relapse prevention

^aBased on Social Cognitive Theory [43] and Behavioural Choice Theory [44]

^bBehaviour change techniques from the Behaviour Change Technique taxonomy [40]