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    Associations of objectively measured moderate-to-vigorous-intensity physical activity and sedentary time with all-cause mortality in a population of adults at high risk of type 2 diabetes mellitus.

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    Author
    Bakrania, K; Edwardson, CL; Khunti, K; Henson, J; Stamatakis, E; Hamer, M; Davies, MJ; Yates, T
    Date
    2017-03
    Source Title
    Preventive Medicine Reports
    Publisher
    Elsevier BV
    University of Melbourne Author/s
    Khunti, Kamlesh
    Affiliation
    General Practice
    Metadata
    Show full item record
    Document Type
    Journal Article
    Citations
    Bakrania, K., Edwardson, C. L., Khunti, K., Henson, J., Stamatakis, E., Hamer, M., Davies, M. J. & Yates, T. (2017). Associations of objectively measured moderate-to-vigorous-intensity physical activity and sedentary time with all-cause mortality in a population of adults at high risk of type 2 diabetes mellitus.. Prev Med Rep, 5, pp.285-288. https://doi.org/10.1016/j.pmedr.2017.01.013.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/258222
    DOI
    10.1016/j.pmedr.2017.01.013
    Open Access at PMC
    http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5279862
    Abstract
    The relationships of physical activity and sedentary time with all-cause mortality in those at high risk of type 2 diabetes mellitus (T2DM) are unexplored. To address this gap in knowledge, we examined the associations of objectively measured moderate-to-vigorous-intensity physical activity (MVPA) and sedentary time with all-cause mortality in a population of adults at high risk of T2DM. In 2010-2011, 712 adults (Leicestershire, U.K.), identified as being at high risk of T2DM, consented to be followed up for mortality. MVPA and sedentary time were assessed by accelerometer; those with valid data (≥ 10 hours of wear-time/day with ≥ 4 days of data) were included. Cox proportional hazards regression models, adjusted for potential confounders, were used to investigate the independent associations of MVPA and sedentary time with all-cause mortality. 683 participants (250 females (36.6%)) were included and during a mean follow-up period of 5.7 years, 26 deaths were registered. Every 10% increase in MVPA time/day was associated with a 5% lower risk of all-cause mortality [Hazard Ratio (HR): 0.95 (95% Confidence Interval (95% CI): 0.91, 0.98); p = 0.004]; indicating that for the average adult in this cohort undertaking approximately 27.5 minutes of MVPA/day, this benefit would be associated with only 2.75 additional minutes of MVPA/day. Conversely, sedentary time showed no association with all-cause mortality [HR (every 10-minute increase in sedentary time/day): 0.99 (95% CI: 0.95, 1.03); p = 0.589]. These data support the importance of MVPA in adults at high risk of T2DM. The association between sedentary time and mortality in this population needs further investigation.

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