Table 1.

Primary and secondary outcomes

Primary outcome	Accelerometer-assessed mean weekday minutes of MVPA per day 12-months after baseline assessment (T2)
Secondary outcomes	Accelerometer-assessed mean weekday minutes of MVPA per day during the intervention period (T1)a
	Mean weekend minutes of MVPA at T1 & T2
	Mean weekday accelerometer counts per minute at T1 & T2
	Mean weekend accelerometer counts per minute at T1 & T2
	Proportion of girls meeting recommended 60 minutes of MVPA per day at T1 & T2
	Mean accelerometer-derived minutes of weekday sedentary time at T1 & T2
	Costs of delivering the intervention
	Physical activity motivation and psychological need satisfaction at T1 and T2
	Health related quality of life (EQ-5DY)

^aKey secondary outcome

MVPA Moderate-to-vigorous physical activity

EQ-5D-Y European Quality of Life-5 Dimensions (Youth version)

T1 – 20-week follow-up

T2 – one-year follow-up