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    The associations between physical activity, screen time and weight from 6 to 14 yrs: The Raine Study

    Access Status
    Fulltext not available
    Authors
    Hands, B.
    Chivers, P.
    Parker, H.
    Beilin, L.
    Kendall, Garth
    Larkin, D.
    Date
    2011
    Type
    Journal Article
    
    Metadata
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    Citation
    Hands, Beth P. and Chivers, Paola T. and Parker, Helen E. and Beilin, Lawrence and Kendall, Garth and Larkin, Dawne. 2011. The associations between physical activity, screen time and weight from 6 to 14 yrs: The Raine Study. Journal of Science and Medicine in Sport. 14: pp. 397-403.
    Source Title
    Journal of Science and Medicine in Sport
    DOI
    10.1016/j.jsams.2011.03.011
    ISSN
    14402440
    School
    School of Nursing and Midwifery
    URI
    http://hdl.handle.net/20.500.11937/7608
    Collection
    • Curtin Research Publications
    Abstract

    To examine the strength and direction of the relationship between physical activity level, screen use and BMI in a cohort at ages 6, 8, 10 and 14 yrs as part of a prospective longitudinal cohort study. The sample comprised 1403 males and females who participated in the follow-up survey at 14 yrs of age between 2003 and 2005. Exploratory structural equation modelling was used to examine the interrelationships between physical activity level, BMI and screen time at 6, 8, 10 and 14 yrs. Predictors of BMI at 6, 8, 10 and 14 yrs explained 1.3, 76.1, 80.1 and 73.1 percent of the variances, respectively, with previous BMI the largest predictor [χ2 = 43.082, df = 36, p = 194]. Increased screen time predicted higher BMI and lower physical activity at 8 and 10 yrs but not 14 yrs. At 14 yrs, physical activity predicted BMI. Sedentary patterns of behaviour in early childhood were predictive of later and concurrent obesity, whereas physical activity was predictive of obesity in adolescence. Different intervention targets are required for children and adolescents.

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