Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/21958
Title: Effects of a 'school-based' physical activity intervention on adiposity in adolescents from economically disadvantaged communities: secondary outcomes of the 'Physical Activity 4 Everyone' RCT
Contributor(s): Hollis, Jenna L (author); Sutherland, Rachel (author); Cohen, Kristen  (author); Oldmeadow, Christopher (author); Gillham, Karen (author); Wiggers, John (author); Campbell, Elizabeth (author); Morgan, Philip J (author); Lubans, David R (author); Nathan, Nicole (author); Wolfenden, Luke (author); Okely, Anthony D (author); Davies, Lynda (author); Williams, Amanda (author)
Publication Date: 2016
Open Access: Yes
DOI: 10.1038/ijo.2016.107Open Access Link
Handle Link: https://hdl.handle.net/1959.11/21958
Open Access Link: https://www.nature.com/ijo/journal/v40/n10/full/ijo2016107a.htmlOpen Access Link
Abstract: BACKGROUND/OBJECTIVES: Obesity prevention during adolescence is a health priority. The 'Physical Activity 4 Everyone' (PA4E1) study tested a multi-component physical activity intervention in 10 secondary schools from socio-economically disadvantaged communities. This paper aimed to report the secondary outcomes of the study; to determine whether the intervention impacted on adiposity outcomes (weight, body mass index (BMI), BMI z-score), and whether any effect was moderated by sex, baseline BMI and baseline physical activity level, at 12 and 24 months. SUBJECTS/METHODS: A cluster randomised controlled trial was conducted in New South Wales, Australia. The school-based intervention included seven physical activity strategies targeting the following: curriculum (strategies to maximise physical activity in physical education, student physical activity plans, an enhanced school sport programme); school environment (physical activity during school breaks, modification of school policy); and parents and the community (parent engagement, links with community physical activity providers). Students' weight(kg), BMI and BMI z-score, were collected at baseline (Grade 7), 12 and 24 months. Linear Mixed Models were used to assess between-group mean difference from baseline to 12 and 24 months. Exploratory sub-analyses were undertaken according to three moderators of energy balance. RESULTS: A total of 1150 students (mean age=12 years) provided outcome data at baseline, 1051 (91%) at 12 months and 985 (86%) at 24 months. At 12 months, there were group-bytime effects for weight (mean difference=-0.90 kg (95% confidence interval (CI)=-1.50, −0.30), P<0.01) and BMI (-0.28 kg m-2 (-0.50, -0.06), P=0.01) in favour of the intervention group, but not for BMI z-score (-0.05 (-0.11; 0.01), P=0.13). These findings were consistent for weight (-0.62 kg (-1.21, 0.03), P=0.01) and BMI (-0.28 kg m-2 (-0.49, -0.06), P=0.01) at 24 months, with group-by-time effects also found for BMI z-score (-0.08 (-0.14; -0.02), P=0.02) favouring the intervention group. CONCLUSION: The PA4E1 school-based intervention achieved moderate reductions in adiposity among adolescents from socio-economically disadvantaged communities. Multi-component interventions that increase adolescents' engagement in moderate-to-vigorous physical activity (MVPA) may assist in preventing unhealthy weight gain.
Publication Type: Journal Article
Source of Publication: International Journal of Obesity, 40(10), p. 1486-1493
Publisher: Nature Publishing Group
Place of Publication: United Kingdom
ISSN: 1476-5497
0307-0565
Fields of Research (FoR) 2008: 130210 Physical Education and Development Curriculum and Pedagogy
Fields of Research (FoR) 2020: 390111 Physical education and development curriculum and pedagogy
Socio-Economic Objective (SEO) 2008: 970113 Expanding Knowledge in Education
Socio-Economic Objective (SEO) 2020: 280109 Expanding knowledge in education
280114 Expanding knowledge in Indigenous studies
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
Appears in Collections:Journal Article

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