2016
DOI: 10.1186/s12966-016-0420-8
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Assessing the sustained impact of a school-based obesity prevention program for adolescent boys: the ATLAS cluster randomized controlled trial

Abstract: BackgroundObesity prevention interventions targeting ‘at-risk’ adolescents are urgently needed. The aim of this study is to evaluate the sustained impact of the ‘Active Teen Leaders Avoiding Screen-time’ (ATLAS) obesity prevention program.MethodsCluster RCT in 14 secondary schools in low-income communities of New South Wales, Australia. Participants were 361 adolescent boys (aged 12–14 years) ‘at risk’ of obesity. The intervention was based on Self-Determination Theory and Social Cognitive Theory and involved:… Show more

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Cited by 99 publications
(293 citation statements)
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References 67 publications
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“…The main effect of group was also significant ( F =5.3, p  = .01 ç =0.27). The individual group (1.89 m/s) was significantly faster than the control group (1.45 m/s; t =3.94, p  = .003, d = 1.31), and faster than the social group (1.58 m/s; t =2.05, p  = .08, d = .89), though the latter did not reach statistical significance. Study quality LowCONSORT score: 12Percentage of fulfilled criteria: 48.0%Smith et al 2014 [29], Lubans et al 2016 [30]Australia Study design 2-group cluster RCT Duration Intervention exposure: 20 weeks (Dec 2012 - June 2013)Measurement points: baseline, 8 months (post-intervention), 18 monthsAttrition rate: 19% Sample Children N  = 36112.7 years/12–14 years100% (M)Random Behaviour change theory Self-determination theory, social cognitive theory App features Newly designed app:Goal setting for physical activity and screen time, self-monitoring (uploading pedometer measured steps), tailored motivational and informational messages via ‘push prompts’, assessment of resistance training skill competency, recording fitness challenge results, resistance training and aerobic exercises. Intervention group Goal setting, self-monitoring (steps through pedometer), fitness challenge during school sport sessions, teacher professional development, provision of fitness equipment to schools, face-to-face physical activity sessions led by teachers, lunchtime student mentoring sessions, researcher-led educational sessions for children, a smartphone application and website, parental education and tips for reducing screen time through newsletter Control group Usual practice (regular school sports and PE lessons) Multi-component versus stand-alone app intervention Multi-component Outcome Physical activity (moderate-to-vigorous, total; minutes/day)Sugar-sweetened beverages consumption (glasses/day) Other relevant outcomes FitnessWeight status (BMI, waist circumference, body fat) Measures Accelerometer (worn on 7 consecutive days including weekend) Diet Significant between-group decrease in mean glasses/day of sugar-sweetened beverage consumption in IG (−0.6 ± 0.26; p  = 0.01) at 8-months follow-up. No significant intervention effects at 18-months follow-up. Physical activity No significant changes in daily MVPA or overall PA at 8-months and 18-months follow-ups. Sedentary behaviour Significant between-group difference in mean minutes/day screen-time in favour of IG at 8-months follow-up (−30.0 ± 10.08; p  = 0.03) and 18-months follow-up (−32.2; 95% CI: −53.6- -10.8; p  = 0.03). Fitness Significant between-group increase in muscular endurance in IG as measured by mean push-ups repetitions (0.9 ± 0.49; p =0.04) and resistance training skills (mean units 5.7 ± 0.67; p <0.001) at 8–months follow-up.…”
Section: Methodsmentioning
confidence: 99%
“…The main effect of group was also significant ( F =5.3, p  = .01 ç =0.27). The individual group (1.89 m/s) was significantly faster than the control group (1.45 m/s; t =3.94, p  = .003, d = 1.31), and faster than the social group (1.58 m/s; t =2.05, p  = .08, d = .89), though the latter did not reach statistical significance. Study quality LowCONSORT score: 12Percentage of fulfilled criteria: 48.0%Smith et al 2014 [29], Lubans et al 2016 [30]Australia Study design 2-group cluster RCT Duration Intervention exposure: 20 weeks (Dec 2012 - June 2013)Measurement points: baseline, 8 months (post-intervention), 18 monthsAttrition rate: 19% Sample Children N  = 36112.7 years/12–14 years100% (M)Random Behaviour change theory Self-determination theory, social cognitive theory App features Newly designed app:Goal setting for physical activity and screen time, self-monitoring (uploading pedometer measured steps), tailored motivational and informational messages via ‘push prompts’, assessment of resistance training skill competency, recording fitness challenge results, resistance training and aerobic exercises. Intervention group Goal setting, self-monitoring (steps through pedometer), fitness challenge during school sport sessions, teacher professional development, provision of fitness equipment to schools, face-to-face physical activity sessions led by teachers, lunchtime student mentoring sessions, researcher-led educational sessions for children, a smartphone application and website, parental education and tips for reducing screen time through newsletter Control group Usual practice (regular school sports and PE lessons) Multi-component versus stand-alone app intervention Multi-component Outcome Physical activity (moderate-to-vigorous, total; minutes/day)Sugar-sweetened beverages consumption (glasses/day) Other relevant outcomes FitnessWeight status (BMI, waist circumference, body fat) Measures Accelerometer (worn on 7 consecutive days including weekend) Diet Significant between-group decrease in mean glasses/day of sugar-sweetened beverage consumption in IG (−0.6 ± 0.26; p  = 0.01) at 8-months follow-up. No significant intervention effects at 18-months follow-up. Physical activity No significant changes in daily MVPA or overall PA at 8-months and 18-months follow-ups. Sedentary behaviour Significant between-group difference in mean minutes/day screen-time in favour of IG at 8-months follow-up (−30.0 ± 10.08; p  = 0.03) and 18-months follow-up (−32.2; 95% CI: −53.6- -10.8; p  = 0.03). Fitness Significant between-group increase in muscular endurance in IG as measured by mean push-ups repetitions (0.9 ± 0.49; p =0.04) and resistance training skills (mean units 5.7 ± 0.67; p <0.001) at 8–months follow-up.…”
Section: Methodsmentioning
confidence: 99%
“…In another example of a school-based randomized controlled trial targeting obesity prevention, Lubans and colleagues (2016) integrated elements from SDT and SCT and targeted autonomy, competence, and self-efficacy for school-based leisure physical activity. Inactive adolescent boys (ages 12–14) who were at high-risk for becoming overweight were recruited.…”
Section: Summary Of Evidence-based Randomized Controlled Trialsmentioning
confidence: 99%
“…Primary care settings, especially those that involve multiple medical health care personnel (Resnicow et al, 2015) appear to be a critical environment for promoting positive behavioral and parenting skills. Relatedly, training teachers and staff to use autonomy supportive strategies offer rich opportunities for developing positive supportive environments for youth (Lubans et al, 2016); however, sustainable behavioral change may require positive support from both parents and teachers (Wilson et al, 2011). Taken together, these studies suggest that youth and parents are likely to benefit when they receive positive support from multiple sources and across different contexts.…”
Section: Recommendations For Future Researchmentioning
confidence: 99%
“…This means that not only an increase of PA in the intervention group leads to intervention success, but also a decrease of PA in the control group. Secondly, four studies in our pool of 49 studies used clustered randomization methods (for example by school) [40,53,55,66]. We did not differentiate those studies from fully randomized controlled trials, because we did not expect an interaction between the intervention effect and the type of unit randomized (i.e.…”
Section: Limitationsmentioning
confidence: 99%