title: Moderate physical activity as predictor of weight loss after bariatric surgery.
abstract: BACKGROUND
  The prevalence of obesity is 33% and is expected to reach 50% based on current US trends. Bariatric surgery is effective in producing long-term weight loss, yet it requires adherence to the recommended diet and physical activity. This study assessed whether the short-form International Physical Activity Questionnaire (IPAQ-SF) data at 1 year postbariatric surgery would correlate with success (defined as more than 50% excess weight loss (EWL)) after surgery.
  
  
  METHODS
  The IPAQ-SF questionnaire provided assessment of subjects' activity level over the last 7 days, in four separate activity domains: vigorous, moderate, walking, and sitting.
  
  
  RESULTS
  Questionnaires were completed and collected at the 1-year postbariatric surgery group visit. Then, 118 subjects who completed the IPAQ-SF were subdivided based on loss of greater than or less than 50% of their excess weight, which in turn was based on ideal body weight. In subjects with ≥50% EWL (n = 49), we noted 67.1 ± 8.8% EWL versus 33.2 ± 9.4% in those with <50% EWL (n = 69) (p < 0.001). The ≥50% EWL group performed 420 (216-960) min of total activity per week versus 300 (172-718) min for the <50% group. The ≥50% EWL group engaged in 120 (8-180) min of vigorous activity, 150 (28-330) min of moderate activity, and 233 (109-512) min of walking versus 40 (0-255), 68 (0-204), and 188 (83-341) min, respectively, for the <50% EWL group.
  
  
  CONCLUSIONS
  Physical activity does correlate with success after bariatric surgery, as measured by excess weight loss (≥50% EWL).
authors: Division of Endocrinology, Diabetes, Metabolism, and Nutrition, Mayo Clinic, 200 1st Street SW, Rochester, MN, 55905, USA, mundi.manpreet@mayo.edu.
authors: Manpreet S
authors: MS
authors: Mundi
authors: Paul A
authors: PA
authors: Lorentz
authors: James
authors: J
authors: Swain
authors: Karen
authors: K
authors: Grothe
authors: Maria
authors: M
authors: Collazo-Clavell
mesh_terms: D050110:Bariatric Surgery; D003863:Depression / Q000453:epidemiology; D004032:Diet; D015444:Exercise; D017079:Exercise Tolerance; D005260:Female; D005500:Follow-Up Studies; D015438:Health Behavior; D006801:Humans; D008297:Male; D008875:Middle Aged; D009767:Obesity, Morbid / Q000453:epidemiology / Q000523:psychology / Q000601:surgery*; D011159:Population Surveillance; D011184:Postoperative Period; D011379:Prognosis; D011446:Prospective Studies; D011795:Surveys and Questionnaires; D016896:Treatment Outcome; D014481:United States / Q000453:epidemiology; D015431:Weight Loss
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