Time-efficient intervention to improve older adolescents’ cardiorespiratory fitness: findings from the ‘Burn 2 Learn’ cluster randomised controlled trial
Article
Article Title | Time-efficient intervention to improve older adolescents’ cardiorespiratory fitness: findings from the ‘Burn 2 Learn’ cluster randomised controlled trial |
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ERA Journal ID | 9744 |
Article Category | Article |
Authors | Lubans, David R. (Author), Smith, Jordan J. (Author), Eather, Narelle (Author), Leahy, Angus A. (Author), Morgan, Philip J. (Author), Lonsdale, Chris (Author), Plotnikoff, Roland C. (Author), Nilsson, Michael (Author), Kennedy, Sarah G. (Author), Holliday, Elizabeth G. (Author), Weaver, Natasha (Author), Noetel, Michael (Author), Shigeta, Tatsuya T. (Author), Mavilidi, Myrto F. (Author), Valkenborghs, Sarah R. (Author), Gyawali, Prajwal (Author), Walker, Frederick R. (Author), Costigan, Sarah A. (Author) and Hillman, Charles H. (Author) |
Journal Title | British Journal of Sports Medicine |
Journal Citation | 55 (13), pp. 751-758 |
Number of Pages | 9 |
Year | 2021 |
Publisher | BMJ |
Place of Publication | United Kingdom |
ISSN | 0306-3674 |
1473-0480 | |
Digital Object Identifier (DOI) | https://doi.org/10.1136/bjsports-2020-103277 |
Web Address (URL) | https://bjsm.bmj.com/content/early/2020/12/20/bjsports-2020-103277 |
Abstract | Background: Cardiorespiratory fitness (CRF) is an important marker of current and future health status. The primary aim of our study was to evaluate the impact of a time-efficient school-based intervention on older adolescents’ CRF. Methods: Two-arm cluster randomised controlled trial conducted in two cohorts (February 2018 to February 2019 and February 2019 to February 2020) in New South Wales, Australia. Participants (N=670, 44.6% women, 16.0±0.43 years) from 20 secondary schools: 10 schools (337 participants) were randomised to the Burn 2 Learn (B2L) intervention and 10 schools (333 participants) to the control. Teachers in schools allocated to the B2L intervention were provided with training, resources, and support to facilitate the delivery of high-intensity interval training (HIIT) activity breaks during curriculum time. Teachers and students in the control group continued their usual practice. The primary outcome was CRF (20 m multi-stage fitness test). Secondary outcomes were muscular fitness, physical activity, hair cortisol concentrations, mental health and cognitive function. Outcomes were assessed at baseline, 6 months (primary end-point) and 12 months. Effects were estimated using mixed models accounting for clustering. Results: We observed a group-by-time effect for CRF (difference=4.1 laps, 95% CI 1.8 to 6.4) at the primary end-point (6 months), but not at 12 months. At 6 months, group-by-time effects were found for muscular fitness, steps during school hours and cortisol. Conclusions: Implementing HIIT during curricular time improved adolescents’ CRF and several secondary outcomes. Our findings suggest B2L is unlikely to be an effective approach unless teachers embed sessions within the school day. Trial registration number: Australian New Zealand Clinical Trials Registry (ACTRN12618000293268). |
Keywords | aerobic fitness; exercise; intervention effectiveness; physical activity; physical fitness |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 420702. Exercise physiology |
Byline Affiliations | University of Newcastle |
Australian Catholic University | |
Northeastern University, United States | |
School of Health and Wellbeing | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q611q/time-efficient-intervention-to-improve-older-adolescents-cardiorespiratory-fitness-findings-from-the-burn-2-learn-cluster-randomised-controlled-trial
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