Resting Energy Expenditure and Metabolic Adaptation in Adolescents at 12 Months after Bariatric Surgery

Abstract

Evidence suggests that metabolic adaptation occurs after bariatric surgery such that resting energy expenditure (REE) declines more than accounted for by body weight or body composition changes in adults. Little is known about REE and metabolic adaptation among adolescents after bariatric surgery. Objective: To examine changes in REE and metabolic adaptation among adolescents at 12 months (12M) after bariatric surgery. Setting: Pediatric hospital, Canada. Methods: Adolescents undergoing Roux-en-Y gastric bypass (RYGB) or sleeve gastrectomy (SG) were followed. Bioelectrical impedance analysis and indirect calorimetry were completed to measure body composition and REE, respectively. Predicted REE was calculated using the Mifflin equation before and after bariatric surgery and a predictive equation using preoperative data.