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Revista chilena de cirugía

versión On-line ISSN 0718-4026

Resumen

MUNOZ, Rodrigo et al. Exercise reduces lean mass loss in obese patients undergoing bariatric surgery. Rev Chil Cir [online]. 2016, vol.68, n.6, pp.411-416. ISSN 0718-4026.  http://dx.doi.org/10.1016/j.rchic.2016.05.007.

Objective: We sought to characterize the effect of a physical exercise program on fat free mass loss in morbidly-obese patients one year after bariatric surgery. Patients and methods: Retrospective cohort study of a group of patients who underwent Roux-en-Y gastric bypass (RYGB) or Sleeve Gastrectomy (SG) and had body composition analysis before and at 3, 6 and 12 months after surgery. Identified patients were further classified as physical exercise (+) or physical exercise (−) based on whether they followed or not a physical exercise program during the first year after surgery. Results: We identified 35 morbidly obese patients who underwent RYGB or SG. 20 (57%) patients were physical exercise (+) and 15 (43%) patients were physical exercise (−). Mean age and preoperative BMI in physical exercise (+) and physical exercise (−) patients was 33.5 ± 8.9 and 43.3 ± 12.4 years (P < .05), and 40.4 ± 7.1 and 35.8 ± 5 kg/m2 (P < .05), respectively. There were no differences in body composition between both groups. One year after surgery, fat free mass loss in physical exercise (+) and physical exercise (−) patients represented 17.9 ± 4.1% and 30.1 ± 4.5% of total weight loss, respectively (P < .05). Conclusions: The results of this study suggest that muscle stimulation through physical exercise can decrease the lean body mass loss induced by surgery, thus improving body composition outcomes after surgery.

Palabras clave : Body composition; Weight loss; Bariatric surgery; Fat free mass; Physical exercise.

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