title: Exercise improves quality of life in bariatric surgery candidates: results from the Bari-Active trial.
abstract: OBJECTIVE
  To examine the impact of a pre-bariatric surgery physical activity intervention (PAI), designed to increase bout-related (≥10 min) moderate to vigorous PA (MVPA), on health-related quality of life (HRQoL).
  
  
  METHODS
  Analyses included 75 adult participants (86.7% female; BMI = 45.0 ± 6.5 kg m(-2)) who were randomly assigned to 6 weeks of PAI (n = 40) or standard pre-surgical care (SC; n = 35). PAI received 6 individual weekly counseling sessions to increase walking exercise. Participants wore an objective PA monitor for 7 days and completed the SF-36 Health Survey at baseline and post-intervention to evaluate bout-related MVPA and HRQoL changes, respectively.
  
  
  RESULTS
  PAI increased bout-related MVPA from baseline to post-intervention (4.4 ± 5.5 to 21.0 ± 21.4 min day(-1)) versus no change (7.9 ± 16.6 to 7.6 ± 11.5 min day(-1)) for SC (P = 0.001). PAI reported greater improvements than SC on all SF-36 physical and mental scales (P < 0.05), except role-emotional. In PAI, better baseline scores on the physical function and general health scales predicted greater bout-related MVPA increases (P < 0.05), and greater bout-related MVPA increases were associated with greater post-intervention improvements on the physical function, bodily pain, and general health scales (P < 0.05).
  
  
  CONCLUSIONS
  Increasing PA preoperatively improves physical and mental HRQoL in bariatric surgery candidates. Future studies should examine whether this effect improves surgical safety, weight loss outcomes, and postoperative HRQoL.
authors.affiliation: Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University/The Miriam Hospital Weight Control and Diabetes Research Center, Providence, Rhode Island, USA.
authors.forename: Dale S
authors.initials: DS
authors.lastname: Bond
authors.forename: J Graham
authors.initials: JG
authors.lastname: Thomas
authors.forename: Wendy C
authors.initials: WC
authors.lastname: King
authors.forename: Sivamainthan
authors.initials: S
authors.lastname: Vithiananthan
authors.forename: Jennifer
authors.initials: J
authors.lastname: Trautvetter
authors.forename: Jessica L
authors.initials: JL
authors.lastname: Unick
authors.forename: Beth A
authors.initials: BA
authors.lastname: Ryder
authors.forename: Dieter
authors.initials: D
authors.lastname: Pohl
authors.forename: G Dean
authors.initials: GD
authors.lastname: Roye
authors.forename: Harry C
authors.initials: HC
authors.lastname: Sax
authors.forename: Rena R
authors.initials: RR
authors.lastname: Wing
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D050110:Bariatric Surgery; D005081:Exercise Therapy; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000523:psychology / Q000601:surgery*; D011788:Quality of Life; D016896:Treatment Outcome; D016138:Walking; D015431:Weight Loss