title: Patterns of sedentary behavior in overweight and obese women.
abstract: OBJECTIVE
  Few studies have objectively quantified sedentary behavior, particularly in special population subgroups. This study quantified the volume of and breaks from sedentary behavior in a sample of overweight and obese, primarily African American, women.
  
  
  METHODS
  Cross-sectional.
  
  
  METHODS
  18 census tracts in Columbia, South Carolina with higher than state and national poverty levels.
  
  
  METHODS
  197 overweight/obese women (87% African American). Mean age 38.3 +/- 7.6 years, mean body mass index 40.6 +/- 8.8 kg/m2.
  
  
  METHODS
  Using a cut point of < 100 counts/minute, estimated daily averages of: 1) total volume, 2) > or = 10, 30, and 60-minute bouts, and 3) patterns of sedentary behavior according to time of day and day of the week were computed. Total breaks, or interruptions, in sedentary time were also calculated.
  
  
  RESULTS
  Participants were sedentary 64.1% of the day, engaging in 10.5 +/- 2.8 daily bouts of sedentary behavior per hour of sedentary time; each bout lasted approximately 6.4 +/- 1.7 minutes. All participants engaged in > or = 1 daily bout of sedentary behavior > or = 10 and > or = 30 minutes, and most (83%) engaged in > or = 1 bout > or = 60 minutes. Participants were slightly more sedentary during the evening (6 pm-midnight) and on weekdays. On average, participants took 90.9 +/- 16.0 breaks from sedentary behavior; each break lasted 3.3 +/- .8 minutes.
  
  
  CONCLUSIONS
  Women engaged in more sedentary behavior than that reported in national data sets. In an effort to improve public health, efforts should not only focus on increasing physical activity, but also on decreasing time spent sedentary.
authors.affiliation: Prevention Research Center, University of South Carolina, 921 Assembly Street, Columbia, SC 29208, USA. stritesk@mailbox.sc.edu
authors.forename: Meghan
authors.initials: M
authors.lastname: Baruth
authors.forename: Patricia A
authors.initials: PA
authors.lastname: Sharpe
authors.forename: Brent
authors.initials: B
authors.lastname: Hutto
authors.forename: Sara
authors.initials: S
authors.lastname: Wilcox
authors.forename: Tatiana Y
authors.initials: TY
authors.lastname: Warren
mesh_terms: D056044:Actigraphy; D000328:Adult; D001741:Black or African American; D015992:Body Mass Index; D005260:Female; D015438:Health Behavior; D006801:Humans; D008875:Middle Aged; D009765:Obesity / Q000453:epidemiology*; D057185:Sedentary Behavior; D013022:South Carolina / Q000453:epidemiology; D013997:Time Factors; D055105:Waist Circumference
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