A brief intervention to increase physical activity behavior among adolescents using mental simulations and action planning
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This study evaluated the effectiveness of a brief integrated theory-based intervention to increase physical activity (PA) among adolescents over a three-month follow-up period. A 2 (mental simulation: present vs. absent) × 2 (action planning: present vs. absent) × 4 (time: baseline vs. one-month vs. two-month vs. three-month follow-up) mixed-model randomized controlled design was adopted. Adolescents aged 14–15 years (N = 267) completed baseline psychological measures and self-reported PA followed by the relevant intervention manipulation, if appropriate, with follow-up measures collected one, two, and three months later. Results revealed no significant effects for the mental simulation and action planning strategies nor the interaction of the two strategies. However, among participants with low levels of baseline PA, participants in both mental simulation alone and action planning alone groups reported significantly higher levels of PA at one-month follow up than other groups, suggesting that individual intervention components may be effective in low-active adolescents.
Psychology, Health and Medicine
© 2016 Taylor & Francis (Routledge). This is an Accepted Manuscript of an article published by Taylor & Francis in Psychology, Health & Medicine on 17 Jul 2016, available online: https://www.tandfonline.com/doi/10.1080/13548506.2016.1211298
This publication has been entered into Griffith Research Online as an Advanced Online Version.
Psychology not elsewhere classified