%0 Journal Article
%T Accelerometer-measured sedentary patterns are associated with incident falls in older women
%J Journal of the American Geriatrics Society
%D 2020
%A Rosenberg, Dori E.
%A Rillamas-Sun, Eileen
%A Bellettiere, John
%A LaMonte, Michael
%A Buchner, David M.
%A Di, Chongzhi
%A Hunt, Julie
%A Marshall, Stephen
%A Stefanick, Marcia
%A Zhang, Yuzheng
%A Lacroix, Andrea Z.
%V ePub
%N ePub
%P ePub-ePub
%X BACKGROUND/OBJECTIVE: Falls cause significant problems for older adults. Sedentary time is associated with lower physical function and could increase the risk for falls.   DESIGN: Prospective study.   SETTING: Sites across the United States.   PARTICIPANTS: Older women (N = 5,545, mean age 79 years) from the Women' Health Initiative Objective Physical Activity and Cardiovascular Health study.   MEASUREMENTS: Accelerometers worn at the hip for up to 1 week collected measures of daily sedentary time and the mean sedentary bout duration, a commonly used metric for sedentary accumulation patterns. For up to 13 months after accelerometer wear, women reported daily whether they had fallen on monthly calendars.   RESULTS: In fully adjusted models, the incident rate ratios (95% confidence interval) for quartiles 1 (lowest), 2, 3, and 4 of sedentary time respectively were 1.0 (ref.), 1.07 (0.93-1.24), 1.07 (0.91-1.25), and 1.14 (0.96-1.35; P-trend =.65) and for mean sedentary bout duration was 1.0 (ref.), 1.05 (0.92-1.21), 1.02 (0.88-1.17), and 1.17 (1.01-1.37; P-trend =.01), respectively. Women with a history of two or more falls had stronger associations between sedentary time and falls incidence compared with women with a history of no or one fall (P for interaction =.046).   CONCLUSIONS: Older women in the highest quartile of mean sedentary bout duration had a significantly increased risk of falling. Women with a history of frequent falling may be at higher risk for falling if they have high sedentary time. Interventions testing whether shortening total sedentary time and/or sedentary bouts lowers fall risk are needed to confirm these observational findings.<p /> <p>Language: en</p>
%G en
%I John Wiley and Sons
%@ 0002-8614
%U http://dx.doi.org/10.1111/jgs.16923