title: Objectively measured and self-reported sedentary time in older Canadians.
abstract: OBJECTIVE
  The aim of this study was to examine objectively measured total and self-reported leisure sedentary time among older Canadians by work status.
  
  
  METHODS
  The analysis was based on 1729 older adults (60-79 years) from the 2007/09 and 2010/11 Canadian Health Measures Survey. Work status, functional limitations, smoking, and perceived health were assessed by self-report and waist circumference (WC) was measured. Total sedentary time (ST) and physical activity (PA) were objectively measured by accelerometer and leisure sedentary activities were assessed by questionnaire.
  
  
  RESULTS
  93.6% of individuals were sedentary for 8 or more hours per day. Measured ST did not differ by work status, while self-reported leisure ST was higher in those not working compared to those working (239 vs. 207 minutes/day, p < 0.05). Correlates of measured ST were fair/poor perceived health (β: 28.76, p < 0.01), smoking (β: 17.12, p < 0.05), high-risk WC (β: 13.14, p < 0.05), and not meeting PA guidelines (β: 35.67, p < 0.001). For self-reported leisure ST, working status (β: 33.80, p < 0.001) and functional limitations (β: 16.31, p < 0.05) were significant correlates.
  
  
  CONCLUSIONS
  Older adults accumulate substantial ST regardless of their working status and ST is correlated with indicators of health risk. Older adults are an important target population for interventions to reduce ST.
authors: Dept. of Kinesiology, University of Lethbridge, 4401 University Drive, Lethbridge AB T1K 3M4, Canada.
authors: Jennifer L
authors: JL
authors: Copeland
authors: Canadian Health Measures Survey, Statistics Canada, 150 Tunney's Pasture Driveway, Ottawa, ON K1A 0T6, Canada.
authors: Janine
authors: J
authors: Clarke
authors: Faculty of Health Sciences, Kinesiology, University of Ontario Institute of Technology, Science Building, 2000 Simcoe St. N., Oshawa, ON L1H 7K4, Canada.
authors: Shilpa
authors: S
authors: Dogra
keywords: Aging; Health; Physical activity; Retirement; Sitting