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IntroductionPhysical activity declines during adolescence, with the lowest levels of activity observed among those with disability. Schools are ideal settings to address this issue; however, few school-based interventions have been specifically designed for older adolescents with disability. Our aim is to investigate the effects of a school-based physical activity programme, involving high-intensity interval training (HIIT), on physical, mental and cognitive health in older adolescents with disability.Methods and analysisWe will evaluate the Burn 2 Learn adapted (B2La) intervention using a two-arm, parallel group, cluster randomised controlled trial with allocation occurring at the school level (treatment or waitlist control). Secondary schools will be recruited in two cohorts from New South Wales, Australia. We will aim to recruit 300 older adolescents (aged 15–19 years) with disability from 30 secondary schools (10 in cohort 1 and 20 in cohort 2). Schools allocated to the intervention group will deliver two HIIT sessions per week during scheduled specialist support classes. The sessions will include foundational aerobic and muscle strengthening exercises tailored to meet student needs. We will provide teachers with training, resources, and support to facilitate the delivery of the B2La programme. Study outcomes will be assessed at baseline, 6 months (primary endpoint), and 9 months. Our primary outcome is functional capacity assessed using the 6 min walk/push test. Secondary outcomes include physical activity, muscular fitness, body composition, cognitive function, quality of life, physical literacy, and on-task behaviour in the classroom. We will also conduct economic and process evaluations to determine cost-effectiveness, programme acceptability, implementation, adaptability, and sustainability in schools.Ethics and disseminationThis study has received approval from the University of Newcastle (H-2021–0262) and the New South Wales Department of Education (SERAP: 2021257) human research ethics committees. Findings will be published in peer-reviewed journals, and key stakeholders will be provided with a detailed report following the study.Trial registration numberAustralian New Zealand Clinical Trials Registry Number: ACTRN12621000884808.

ObjectiveThe need for clear and actionable guidelines for the promotion and protection of mental health in organised community sport has previously been identified. This study aimed to provide guidelines to promote and protect mental health in organised community sport in Australia.MethodsGuideline development was informed by (1) systematic reviews of the evidence pertaining to existing mental health guidelines in sport and mental health interventions in community sport; (2) an expert Delphi consensus study and (3) key stakeholder input via focus groups. A Guideline Development Committee comprising experts and key stakeholder representatives articulated nine distinct guidelines.ResultsThese guidelines address the areas of: mental health literacy training; mental health support pathways and processes; responding to mental health emergencies; responding to major events that may impact mental health; having a mental health plan in place; reducing stigmatising attitudes; appointing a dedicated mental health champion; coach education and promoting well-being within the organisation.ConclusionsWe provide guidance for promoting and protecting mental health in community sport. Monitoring uptake and measuring the effectiveness of the guidelines are important areas of future work to advance positive mental health for everybody involved in community sport.