Peralta 2009.

Study characteristics
Methods	Study design: RCT Intervention period: 6 months Follow‐up period (post‐intervention): nil Differences in baseline characteristics: NR Reliable outcomes: reported Protection against contamination: NR Unit of allocation: child Unit of analysis: child All analyses were performed according to ITT principles
Participants	N (controls baseline) = 17 N (controls follow‐up) = 16 N (interventions baseline) =16 N (interventions follow‐up) = 16 Setting (and number by study group): secondary school (N = 1) Recruitment: 7th graders completing < 49 laps using Multistage Fitness Test Geographic region: Australia Percentage of eligible population enrolled: 58% Mean age: 12.5 ± 0.4 years Sex: male only
Interventions	Curriculum component: 1 x 60‐min curriculum session and 2 x 20‐min lunchtime PA sessions per week, and for 16 programme weeks; each 60‐min curriculum session included practical and/or theoretical components Practical component: comprised modified games and activities Theoretical components: focused on promoting PA through increasing physical self‐esteem and self‐efficacy, reducing time spent in small‐screen recreation at weekends, decreasing sweetened beverage consumption, and increasing fruit consumption and the acquisition and practice of self‐regulatory behaviours such as goal‐setting, time‐management, and identifying and overcoming barriers Behaviour modification techniques (e.g. group goals converting time spent in PA to km to reach a specified destination, and the use of incentives such as small footballs) were used throughout the programme behaviours Practical components: modified games and activities School staff, PE teacher, facilitated by researcher but included programme champion who also chose peer facilitators (11th graders), one 20‐min training session) and 6 x newsletters sent to parents were also involved except for researchers. (Combined effects of dietary interventions and PA interventions vs control)
Outcomes	Height and weight Waist circumference % body fat Cardiorespiratory fitness PA using accelerometry Time spent using small‐screen recreation Sweetened beverage and fruit consumption Process evaluation: reported
Implementation‐related factors	Theoretical basis: reported (SCT) Resources for intervention implementation (e.g. funding needed or staff hours required): NR Who delivered the intervention: reported PROGRESS categories assessed at baseline: reported (gender) PROGRESS categories analysed at outcome: NR Outcomes relating to harms/unintended effects: NR Intervention included strategies to address diversity or disadvantage: NR Economic evaluation: NR
Notes	Funding: the study authors thanked participating students, staff and the broader intervention school community for partly funding the study. All analyses performed according to ITT principles
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Randomised "using a computer‐based number producing algorithm..."
Allocation concealment (selection bias)	Unclear risk	NR
Blinding (performance bias and detection bias) All outcomes	Low risk	Assessors blinded
Incomplete outcome data (attrition bias) All outcomes	Low risk	Only one participant lost at follow‐up and ITT done
Selective reporting (reporting bias)	Unclear risk	Protocol or trial register not found
Other bias	Low risk	Intervention conducted in 1 school with an absence of a 'true' control group since it was compulsory for all boys to participate in PA