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    Associations of objectively-assessed physical activity and sedentary time with depression: NHANES (2005-2006)

    Access Status
    Fulltext not available
    Authors
    Vallance, J.
    Winkler, E.
    Gardiner, P.
    Healy, Genevieve
    Lynch, B.
    Owen, N.
    Date
    2011
    Type
    Journal Article
    
    Metadata
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    Citation
    Vallance, J. and Winkler, E. and Gardiner, P. and Healy, G. and Lynch, B. and Owen, N. 2011. Associations of objectively-assessed physical activity and sedentary time with depression: NHANES (2005-2006). Preventive Medicine. 53 (4-5): pp. 284-288.
    Source Title
    Preventive Medicine
    DOI
    10.1016/j.ypmed.2011.07.013
    ISSN
    0091-7435
    School
    School of Physiotherapy and Exercise Science
    URI
    http://hdl.handle.net/20.500.11937/9480
    Collection
    • Curtin Research Publications
    Abstract

    Background: Studies provide conflicting evidence for the protective effects of moderate-to-vigorous-intensity physical activity on depression. Recent evidence suggests that sedentary behaviors may also be associated with depression. Purpose: To examine the associations of accelerometer-derived moderate-to-vigorous-intensity physical activity and sedentary time with depression among a population-based sample. Methods: Cross-sectional study using 2,862 adults from the 2005-2006 US National Health and Nutrition Examination Survey. ActiGraph accelerometers were used to derive both moderate-to-vigorous-intensity physical activity and sedentary time. Results: Depression occurred in 6.8% of the sample. For moderate-to-vigorous-intensity physical activity, compared with those in quartile 1 (least active), significantly lower odds of depression were observed for those participants in quartiles 2 (OR = 0.55, 95% CI, 0.34 to 0.89), 3 (OR = 0.49, 95% CI, 0.26 to 0.93), and 4 (most active) (OR = 0.37, 95% CI, 0.20 to 0.70) (p for trend p< 0.01). In overweight/obese participants only, those in quartile 4 (most sedentary) had significantly higher odds for depression than those in quartile 1 (least sedentary) [quartile 3 vs 1 (OR = 1.94, 95% CI, 1.01 to 3.68) and 4 vs 1 (OR = 3.09, 95% CI, 1.25 to 7.68)]. Conclusion: The current study identified lower odds of depression were associated with increasing moderate-to-vigorous-intensity physical activity and decreasing sedentary time, at least within overweight/obese adults.

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