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    Social cognitive antecedents of fruit and vegetable consumption in truck drivers: A sequential mediation analysis

    Access Status
    Fulltext not available
    Authors
    Hamilton, Kyra
    Vayro, C.
    Schwarzer, R.
    Date
    2015
    Type
    Journal Article
    
    Metadata
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    Citation
    Hamilton, K. and Vayro, C. and Schwarzer, R. 2015. Social cognitive antecedents of fruit and vegetable consumption in truck drivers: A sequential mediation analysis. Journal of Nutrition Education and Behavior. 47 (4): pp. 379-384.
    Source Title
    Journal of Nutrition Education and Behavior
    DOI
    10.1016/j.jneb.2015.04.325
    ISSN
    1499-4046
    School
    School of Psychology and Speech Pathology
    URI
    http://hdl.handle.net/20.500.11937/3339
    Collection
    • Curtin Research Publications
    Abstract

    OBJECTIVE: To examine a mechanism by which social cognitive factors may predict fruit and vegetable consumption in long-haul truck drivers. METHODS: Dietary self-efficacy, positive outcome expectancies, and intentions were assessed in 148 Australian truck drivers, and 1 week later they reported their fruit and vegetable consumption. A theory-guided sequential mediation model was specified that postulated self-efficacy and intention as mediators between outcome expectancies and behavior. RESULTS: The hypothesized model was confirmed. A direct effect of outcome expectancies was no longer present when mediators were included, and all indirect effects were significant, including the 2-mediator chain (ß =.15; P < .05; 95% confidence interval, 0.05-0.32). Truck drivers who expected benefits from dietary change, felt confident about being capable to do so, and formed an intention were likely to report larger amounts of fruit and vegetable intake. CONCLUSIONS AND IMPLICATIONS: The results suggest that the role of outcome expectancies and self-efficacy are important to consider for understanding and predicting healthy eating intentions in truck drivers.

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