title: Time spent in physical activity and sedentary behaviors on the working day: the American time use survey.
abstract: OBJECTIVE
  To determine time spent on the working day in sleep, work, sedentary behaviors, and light-, moderate-, and vigorous-intensity behaviors by occupation intensity.
  
  
  METHODS
  Data came from 30,758 working respondents to the 2003 to 2009 American Time Use Survey. Mean ± SEM time spent in work, sedentary behaviors, light-, moderate-, and vigorous-intensity activities, and sleep were computed by occupations classified as sedentary, light, moderate, and vigorous intensity.
  
  
  RESULTS
  On average, approximately 32% of the 24-hour day was spent sleeping and approximately 31% was spent at work. Time spent in sedentary behaviors outside of work was higher, and light-intensity time was lower, with higher levels of intensity-defined occupation.
  
  
  CONCLUSIONS
  Those employed in sedentary occupations were sedentary for approximately 11 hours per day, leaving little time to achieve recommended levels of physical activity for overall health.
authors: Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA. Tudor-Locke@pbrc.edu
authors: Catrine
authors: C
authors: Tudor-Locke
authors: Claudia
authors: C
authors: Leonardi
authors: William D
authors: WD
authors: Johnson
authors: Peter T
authors: PT
authors: Katzmarzyk
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001213:Asian / Q000706:statistics & numerical data; D044383:Black People / Q000706:statistics & numerical data; D003430:Cross-Sectional Studies; D005260:Female; D006630:Hispanic or Latino / Q000706:statistics & numerical data; D006801:Humans; D008297:Male; D008875:Middle Aged; D009043:Motor Activity; D015995:Prevalence; D057185:Sedentary Behavior / Q000208:ethnology*; D012890:Sleep; D014481:United States / Q000453:epidemiology; D044465:White People / Q000706:statistics & numerical data; D017132:Workplace / Q000706:statistics & numerical data; D055815:Young Adult; D001741:Black or African American