• Am J Prev Med · Jun 2017

    Post-traumatic Stress Disorder and 20-Year Physical Activity Trends Among Women.

    • Ashley Winning, Paola Gilsanz, Karestan C Koenen, Andrea L Roberts, Qixuan Chen, Jennifer A Sumner, Eric B Rimm, Maria GlymourMMDepartment of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, California., and Laura D Kubzansky.
    • Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, Massachusetts; Department of Research and Evaluation, EMPath (Economic Mobility Pathways), Boston, Massachusetts. Electronic address: awinning@empathways.org.
    • Am J Prev Med. 2017 Jun 1; 52 (6): 753-760.

    IntroductionPost-traumatic stress disorder (PTSD) may be associated with physical inactivity, a modifiable lifestyle factor that contributes to risk of cardiovascular and other chronic diseases; however, no study has evaluated the association between PTSD onset and subsequent physical activity (PA) changes.MethodAnalyses were conducted between October 2014 and April 2016, using data from the ongoing Nurses' Health Study II (N=50,327). Trauma exposure and PTSD symptoms were assessed using two previously validated measures, the Brief Trauma Questionnaire and Short Screening Scale for DSM-IV PTSD. Average PA (hours/week) was assessed using self-report measures at six time points across 20 years (1989-2009). Linear mixed models with time-updated PTSD assessed differences in PA trajectories by trauma/PTSD status. Among a subsample of women whose trauma/PTSD onset during follow-up, group differences in PA patterns before and after onset were assessed using linear spline models.ResultsPA decreased more steeply over time among trauma-exposed women reporting four or five (β= -2.5E-3, SE=1.0E-3, p=0.007) or six or seven PTSD symptoms (β= -6.7E-3, SE=1.1E-3, p<0.001) versus women without trauma exposure, adjusting for potential confounders. Among a subsample of women whose trauma/PTSD symptoms onset during follow-up, no differences in PA were observed prior to onset; after onset, women with six or seven PTSD symptoms had a steeper decline (β= -17.1E-3, SE=4.2E-3, p<0.001) in PA over time than trauma-exposed women without PTSD.ConclusionsDecreases in PA associated with PTSD symptoms may be a pathway through which PTSD influences cardiovascular and other chronic diseases.Copyright © 2017 American Journal of Preventive Medicine. Published by Elsevier Inc. All rights reserved.

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