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    Sleep duration and risk of obesity among a sample of Victorian school children.

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    Author
    Morrissey, B; Malakellis, M; Whelan, J; Millar, L; Swinburn, B; Allender, S; Strugnell, C
    Date
    2016-03-09
    Source Title
    BMC Public Health
    Publisher
    Springer Science and Business Media LLC
    University of Melbourne Author/s
    Millar, Lynne
    Affiliation
    Medicine and Radiology
    Metadata
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    Document Type
    Journal Article
    Citations
    Morrissey, B., Malakellis, M., Whelan, J., Millar, L., Swinburn, B., Allender, S. & Strugnell, C. (2016). Sleep duration and risk of obesity among a sample of Victorian school children.. BMC Public Health, 16 (1), pp.245-. https://doi.org/10.1186/s12889-016-2913-4.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/255011
    DOI
    10.1186/s12889-016-2913-4
    Open Access at PMC
    http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4784277
    Abstract
    BACKGROUND: Insufficient sleep is potentially an important modifiable risk factor for obesity and poor physical activity and sedentary behaviours among children. However, inconsistencies across studies highlight the need for more objective measures. This paper examines the relationship between sleep duration and objectively measured physical activity, sedentary time and weight status, among a sample of Victorian Primary School children. METHODS: A sub-sample of 298 grades four (n = 157) and six (n = 132) Victorian primary school children (aged 9.2-13.2 years) with complete accelerometry and anthropometry data, from 39 schools, were taken from a pilot study of a larger state based cluster randomized control trial in 2013. Data comprised: researcher measured height and weight; accelerometry derived physical activity and sedentary time; and self-reported sleep duration and hypothesised confounding factors (e.g. age, gender and environmental factors). RESULTS: Compared with sufficient sleepers (67 %), those with insufficient sleep (<10 hrs/day) were significantly more likely to be overweight (OR 1.97, 95 % CI:1.11-3.48) or obese (OR 2.43, 95 % CI:1.26-4.71). No association between sleep and objectively measured physical activity levels or sedentary time was found. CONCLUSION: The strong positive relationship between weight status and sleep deprivation merits further research though PA and sedentary time do not seem to be involved in the relationship. Strategies to improve sleep duration may help obesity prevention initiatives in the future.

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