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  • The Role of Self-Efficacy and Friend Support on Adolescent Vigorous Physical Activity

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    Author(s)
    Hamilton, Kyra
    Warner, Lisa M
    Schwarzer, Ralf
    Griffith University Author(s)
    Hamilton, Kyra
    Year published
    2017
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    Abstract
    Objectives. Physical activity, including some form of vigorous activity, is a key component of a healthy lifestyle in young people. Self-efficacy and social support have been identified as key determinants of physical activity; however, the mechanism that reflects the interplay of these two factors is not well understood. The aim of the current study was to test social cognitive theory’s notion that self-efficacy relates to intention that translates into behavior and to investigate whether friend support and self-efficacy synergize, interfere, or compensate for one another to predict vigorous physical activity in adolescents—a ...
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    Objectives. Physical activity, including some form of vigorous activity, is a key component of a healthy lifestyle in young people. Self-efficacy and social support have been identified as key determinants of physical activity; however, the mechanism that reflects the interplay of these two factors is not well understood. The aim of the current study was to test social cognitive theory’s notion that self-efficacy relates to intention that translates into behavior and to investigate whether friend support and self-efficacy synergize, interfere, or compensate for one another to predict vigorous physical activity in adolescents—a population at risk of rapid decreases in physical activity. Method. A survey at two points in time was conducted in 226 students aged 12 to 16 years. In a conditional process analysis, friend support and physical activity self-efficacy were specified as interacting predictors of intention. The latter was specified as a mediator between self-efficacy and later vigorous physical activity, controlling for sex and age. Results. Self-efficacy emerged as the dominant predictor of intention, followed by friend support, and an interaction between support and self-efficacy. In adolescents with high self-efficacy, intention was independent of support. In those with low self-efficacy, receiving friend support partly compensated for lack of self-efficacy. The effect of self-efficacy on vigorous physical activity was mediated by intention. Conclusions. Adolescent vigorous physical activity was indirectly predicted by self-efficacy via intention, and this mediation was further moderated by levels of friend support, indicating that friend support can partly buffer lack of self-efficacy.
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    Journal Title
    Health Education & Behavior
    DOI
    https://doi.org/10.1177/1090198116648266
    Copyright Statement
    © 2016 Kyra Hamilton, Lisa M. Warner and Ralf Schwarzer, The role of self-efficacy and friend support on adolescent vigorous physical activity, Health Education & Behavior, 2016 pp.1-7. Copyright 2016 The Authors. Reprinted by permission of SAGE Publications.
    Note
    This publication has been entered into Griffith Research Online as an Advanced Online Version.
    Subject
    Biomedical and clinical sciences
    Education
    Psychology
    Other psychology not elsewhere classified
    Publication URI
    http://hdl.handle.net/10072/143156
    Collection
    • Journal articles

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