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Momentary intentions and perceived behavioral control are within-person predictors of sedentary leisure time: preliminary findings from an ecological momentary assessment study in adolescents

Abstract

Previous studies among adolescents conceptualize behavioral cognitions [e.g., intentions and perceived behavioral control (PBC)] as stable trait-like factors despite evidence suggesting they vary momentarily. We examined whether intentions and PBC momentarily relate to subsequent sedentary time during non-school periods. Healthy adolescents (N = 15, ages 11–15) reported their intentions and PBC regarding sedentary leisure behaviors via ecological momentary assessment (EMA) up to seven times/day for 14 days. Sedentary time in the two hours following each EMA prompt was measured by ActivPAL accelerometers. When participants reported greater sedentary intentions (within-person β = 1.1, 95% CI 0.2, 2.1, p = 0.0213) and sedentary PBC (within-person β = 1.7, 95% CI 0.6, 2.8, p = 0.0029), they accumulated greater sedentary time. This demonstrates that sedentary intentions and PBC are acutely associated with sedentary time among adolescents. Our findings highlight the potential for implementing just-in-time activity interventions among adolescents during at-risk periods within the day, characterized by deviations from one’s usual intentions and PBC levels.

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Funding

This work was supported by the National Institute of Diabetes and Digestive and Kidney Diseases (K01DK11306), the National Cancer Institute (T32CA009492), the National Heart, Lung, and Blood Institute (R01HL119255), and the University of Southern California Office of the Provost.

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Correspondence to Britni R. Belcher.

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The authors have no competing interests/conflicts of interest to report.

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This study was approved by the University of Southern California Institutional Review Board.

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Prior to the start of the study, the adolescents provided written informed assent and their parents provided written informed consent to enroll in the study and publish their data.

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All procedures performed in this study were approved by the University of Southern California Institutional Review Board. Parents provided informed consent and youth provided assent.

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Ebrahimian, S., Zink, J., Yang, CH. et al. Momentary intentions and perceived behavioral control are within-person predictors of sedentary leisure time: preliminary findings from an ecological momentary assessment study in adolescents. J Behav Med 45, 391–403 (2022). https://doi.org/10.1007/s10865-022-00309-2

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  • DOI: https://doi.org/10.1007/s10865-022-00309-2

Keywords

  • Behavioral cognitions
  • Intensive longitudinal data
  • Theory of Planned Behavior
  • Within-day
  • Youth