Does duration of physical activity bouts matter for adiposity and metabolic syndrome? A cross-sectional study of older British men
View/ Open
Author
Jefferis, Barbara J.
Parsons, Tessa J.
Sartini, Claudio
Ash, Sarah
Lennon, Lucy T.
Wannamethee, S. Goya
Whincup, Peter H.
Published Version
https://doi.org/10.1186/s12966-016-0361-2Metadata
Show full item recordCitation
Jefferis, Barbara J., Tessa J. Parsons, Claudio Sartini, Sarah Ash, Lucy T. Lennon, S. Goya Wannamethee, I-Min Lee, and Peter H. Whincup. 2016. “Does duration of physical activity bouts matter for adiposity and metabolic syndrome? A cross-sectional study of older British men.” The International Journal of Behavioral Nutrition and Physical Activity 13 (1): 36. doi:10.1186/s12966-016-0361-2. http://dx.doi.org/10.1186/s12966-016-0361-2.Abstract
Background: Older adults have low physical activity(PA) and high sedentary behaviour(SB) levels. We investigate how total volume and specific patterns of moderate to vigorous PA(MVPA), light PA(LPA) and SB are related to adiposity and metabolic syndrome (MS). Then, with reference to physical activity guidelines which encourage MVPA in bouts > =10 min and avoiding “long” sedentary bouts, we investigate whether accumulating PA and SB in bouts of different defined durations are differently associated with these outcomes. Methods: Cross-sectional study of men (71–91 years) recruited in UK primary care centres. Nurses made physical measures (weight, height, bio-impedance, blood pressure) and took fasting blood samples. 1528/3137 (49 %) surviving men had ≥3 valid days (≥600 min) accelerometer data. 450 men with pre-existing chronic disease were excluded. 1009/1078 (93.6 %) had complete covariate data. Results: Men (n = 1009, mean age 78.5(SD 4.7) years) spent 612(SD 83), 202(SD 64) and 42(SD 33) minutes in SB, LIPA and MVPA respectively. Each additional 30 min/day of SB and MVPA were associated with 0.32 (95 % CI 0.23, 0.40)Kg/m2 higher Body Mass Index (BMI) and −0.72(−0.93, −0.51) lower BMI Kg/m2 respectively. Patterns for waist circumference (WC), fat mass index (FMI), fasting insulin and MS were similar. MVPA in bouts lasting <10 min or ≥10 min duration were not associated differently with outcomes. In models adjusted for total MVPA, each minute accumulated in SB bouts lasting 1–15 min was associated with lower BMI −0.012 kg/m2, WC −0.029 cm, and OR 0.989 for MS (all p < 0.05), and coefficients for LPA bouts 1–9 min were very similar in separate models adjusted for total MVPA. Minutes accumulated in SB bouts 1–15 min and LPA bouts 1–9 min were correlated, r = 0.62. Conclusions: Objectively measured MVPA, LPA and SB were all associated with lower adiposity and metabolic risk. The beneficial associations of LPA are encouraging for older adults for whom initiating MVPA and maintaining bouts lasting ≥10 min may be particularly challenging. Findings that short bouts of LPA (1–9 min) and SB (1–15 min), but that all MVPA, not just MVPA accumulated in bouts ≥10 min were associated with lower adiposity and better metabolic health could help refine older adult PA guidelines.Other Sources
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4793648/pdf/Terms of Use
This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAACitable link to this page
http://nrs.harvard.edu/urn-3:HUL.InstRepos:26318772
Collections
- HMS Scholarly Articles [17922]
- SPH Scholarly Articles [6362]
Contact administrator regarding this item (to report mistakes or request changes)