Mediators of change in screen-time in a school-based intervention for adolescent boys: findings from the ATLAS cluster randomized controlled trial
Journal article
Smith, Jordan, Morgan, P. J., Lonsdale, Chris, Dally, K., Plotnikoff, Ron C. and Lubans, David. (2017). Mediators of change in screen-time in a school-based intervention for adolescent boys: findings from the ATLAS cluster randomized controlled trial. Journal of Behavioral Medicine. 40(3), pp. 423 - 433. https://doi.org/10.1007/s10865-016-9810-2
Authors | Smith, Jordan, Morgan, P. J., Lonsdale, Chris, Dally, K., Plotnikoff, Ron C. and Lubans, David |
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Abstract | The mechanisms of behavior change in youth screen-time interventions are poorly understood. Participants were 361 adolescent boys (12–14 years) participating in the ATLAS obesity prevention trial, evaluated in 14 schools in low-income areas of New South Wales, Australia. Recreational screen-time was assessed at baseline, 8- and 18-months, whereas potential mediators (i.e., motivation to limit screen-time and parental rules) were assessed at baseline, 4- and 18-months. Multi-level mediation analyses followed the intention-to-treat principle and were conducted using a product-of-coefficients test. The intervention had a significant impact on screen-time at both time-points, and on autonomous motivation at 18-months. Changes in autonomous motivation partially mediated the effect on screen-time at 18-months in single and multimediator models [AB (95% CI) = -5.49 (-12.13, -.70)]. Enhancing autonomous motivation may be effective for limiting screen-time among adolescent males. Trial registration: Australian New Zealand Clinical Trials Registry No: ACTRN12612000978864. |
Year | 2017 |
Journal | Journal of Behavioral Medicine |
Journal citation | 40 (3), pp. 423 - 433 |
Publisher | Springer New York LLC |
ISSN | 0160-7715 |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s10865-016-9810-2 |
Scopus EID | 2-s2.0-84995493557 |
Page range | 423 - 433 |
Research Group | Institute for Positive Psychology and Education |
Publisher's version | File Access Level Controlled |
Place of publication | United States |
Editors | A. Christensen |
https://acuresearchbank.acu.edu.au/item/8718v/mediators-of-change-in-screen-time-in-a-school-based-intervention-for-adolescent-boys-findings-from-the-atlas-cluster-randomized-controlled-trial
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