The relationship between reported exercise and medium term weight loss following laparoscopic bariatric surgery

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Conference Proceeding

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Surg Obes Relat Dis


Objective: Exercise is a strong determinant of prolonged weight loss in non-surgical patients. Studies evaluating the impact of exercise beyond the first year after bariatric surgery are lacking. This analysis characterizes the relationship between reported intentional exercise and medium term weight loss following laparoscopic bariatric surgery. Methods: All patients were included who underwent laparoscopic Roux-en-Y gastric bypass or sleeve gastrectomy from 2007 thru 2013 and completed a telephone survey between 2 and 5 years after surgery. Survey responses assessed weight loss and intentional aerobic exercise. Three groups were created based on low, moderate, and high weekly amounts of exercise reported; Group 1: o 90 min/wk (n= 397), Group 2: 90 to 200 min/wk (n= 252), and Group 3: 4 200 min/wk (n= 223). Standardized weight loss measures including percent of total weight loss (%TWL), percent excess BMI loss (%EBMIL), percent excess weight loss (%EWL), and change in BMI (ΔBMI) were compared using analysis of covariance, with years from surgery as the covariant. Results: A total of 872 patients were included in this study, (age = 48 ± 10 years; BMI = 48 ± 7 kg/m2). The majority of patients were female (80%) and underwent gastric bypass (91%). The mean time for survey completion was 3.3 ± 1.2 years after surgery. Preoperative BMI, age, gender, ethnicity, and procedure type were similar between the three exercise groups. Increasing duration of weekly exercise was associated with better weight loss for all standardized weight loss measures (Table 1). Multiple comparison tests demonstrated greater weight loss in group 3 as compared to group 1 when measured by %TWL, %EBMIL, and %EWL (all p ≤ 0.04). Individuals in Group 3 averaged 5 days per week of exercise which was done primarily by walking (75%). Conclusions: This study suggests that regular exercise in excess of 200 min/week (Group 3) is associated with greater medium term weight loss following laparoscopic bariatric surgery. Multidisciplinary bariatric surgery teams should consider emphasizing exercise at this level to help patients achieve optimal weight loss.





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