title: Sitting-Time and Exercise Predict Depressive Symptoms Among Taiwanese Middle-Aged Adults.
abstract: BACKGROUND
  Exercise and sitting-time may influence depressive symptoms.
  
  
  OBJECTIVE
  The purpose of this study was to examine the relationship between sitting-time, exercise, and depressive symptoms among middle-aged adults.
  
  
  METHODS
  Data from community-based physical examinations between 2013 and 2014 in northern Taiwan were used for this cross-sectional study. We collected demographic data and data on exercise behaviours, sitting-time, and depressive symptoms.
  
  
  RESULTS
  A total of 655 participants completed this survey. Of these, 21.2% had depressive symptoms, 33.7% had regular exercise habits, and 24.1% reported a daily average sitting-time of more than 6 hours. Subjects who had regular exercise with lower sitting-time (odds ratio [OR] = 0.49), subjects who had regular exercise with higher sitting-time (OR = 0.55), and subjects who did not have regular exercise with lower sitting-time (OR = 0.34) had less prevalence of depressive symptoms compared to subjects without regular exercise and with higher sitting-time.
  
  
  CONCLUSIONS
  Middle-aged adults must exercise regularly and reduce sitting-time to prevent depressive symptoms.
authors.affiliation: 1 Shu-Hung Chang, RN, PhD, Chang Gung University of Science and Technology, Taoyuan City, Taiwan ROC; Chang Gung Memorial Hospital, Taoyuan City, Taiwan ROC.
authors.forename: Shu-Hung
authors.initials: SH
authors.lastname: Chang
authors.affiliation: 2 Yi-Ya Chang, RN, PhD, Chang Gung University of Science and Technology, Taoyuan City, Taiwan ROC; National Taiwan University, Taipei City, Taiwan ROC.
authors.forename: Yi-Ya
authors.initials: YY
authors.lastname: Chang
mesh_terms: D003430:Cross-Sectional Studies; D003863:Depression / Q000523:psychology*; D015444:Exercise / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011187:Posture; D013624:Taiwan; D013997:Time Factors
keywords: Taiwan; depressive symptoms; middle-aged adult; regular exercise; sitting-time