title: Objective assessment of time spent being sedentary in bariatric surgery candidates.
abstract: BACKGROUND
  Bariatric surgery candidates spend very little time in moderate-to-vigorous intensity physical activity (≥ 3 metabolic equivalents [METs]). This study examined (1) how much of their remaining time is spent in sedentary behaviors (SB < 1.5 METs) compared to light-intensity activities (1.5–2.9 METs) and (2) whether sedentary time varies by BMI.
  
  
  METHODS
  Daily time (hours, %) spent in SB was examined in 42 surgery candidates (BMI = 49.5 ± 7.9 kg/m2) using the SenseWear Pro2 Armband. Participants were stratified by BMI to assess the relationship between degree of obesity and SB.
  
  
  RESULTS
  Participants wore the armband for 5.4 ± 0.7 days and 13.3 ± 1.7 h/day. On average, 81.4% (10.9 ± 2.1 h/day)of this time was spent in SB. Participants with BMI ≥ 50 spent nearly an hour more per day in SB than those with BMI 35–49.9 (p = 0.01).
  
  
  CONCLUSIONS
  Bariatric surgery candidates spend over 80%of their time in SB. Reducing SB may help to increase physical activity in these patients.
authors.affiliation: Department of Psychiatry and Human Behavior, Warren Alpert Medical School of Brown University, The Miriam Hospital/Weight Control and Diabetes Research Center, 196 Richmond Street, Providence, RI 02903, USA. dbond@lifespan.org
authors.forename: Dale S
authors.initials: DS
authors.lastname: Bond
authors.forename: Jessica L
authors.initials: JL
authors.lastname: Unick
authors.forename: John M
authors.initials: JM
authors.lastname: Jakicic
authors.forename: Sivamainthan
authors.initials: S
authors.lastname: Vithiananthan
authors.forename: Dieter
authors.initials: D
authors.lastname: Pohl
authors.forename: G Dean
authors.initials: GD
authors.lastname: Roye
authors.forename: Beth A
authors.initials: BA
authors.lastname: Ryder
authors.forename: Harry C
authors.initials: HC
authors.lastname: Sax
authors.forename: Jeannine
authors.initials: J
authors.lastname: Giovanni
authors.forename: Rena R
authors.initials: RR
authors.lastname: Wing
mesh_terms: D000328:Adult; D050110:Bariatric Surgery; D015992:Body Mass Index; D015444:Exercise; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009765:Obesity; D057185:Sedentary Behavior; D013997:Time Factors
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