Obesity Surgery

, Volume 28, Issue 3, pp 864–868 | Cite as

Differences in Body Composition in Patients with Obesity 1 Year After Roux-En-Y Gastric Bypass: Successful Vs. Unsuccessful Weight Loss

  • Verónica Vázquez-VelázquezEmail author
  • Alexandra Rodríguez González
  • Samuel Ordoñez Ortega
  • Marcela Rodríguez Flores
  • Miguel F. Herrera
  • Juan Pablo Pantoja
  • Mauricio Sierra
  • Claudia González-Jáuregui Prida
  • Juan Eduardo García García
Brief Communication



The aim of this study is to compare the differences in body composition in patients with obesity with successful weight loss (SWL) and unsuccessful (USWL) 1 year after Roux-en-Y gastric bypass (RYGB).


We included 36 women and 22 men. After stratifying patients according with SWL (defined as ≥ 50% of excess weight loss), fat-free mass (FFM) and fat mass (FM) trajectories were analyzed in each group.


The %FM in SWL women (78%) was lower than USWL (36 vs. 44, p < 0.001). The %FM in SWL men (77%) was lower than USWL (27 vs. 38, p < 0.05). A lower %FM before surgery increased the probability of success (p < 0.05).


SWL patients have a lower %FM, and those with lower pre-surgical %FM are more likely to have SWL 1 year after RYGB.


Body composition Roux-en-Y gastric bypass Success Weight loss Fat mass Follow-up 



The authors would like to thank the patients and the personnel of the Obesity and Eating Disorders Clinic, the National Institute of Medical Sciences and Nutrition Salvador Zubirán for their hard work, cooperation, and help in this study, especially to Valeria Soto Fuentes, Ricardo Reynoso Mendoza, Denise Arcila Martínez, and Ruth Soriano Cortés.

Compliance with Ethical Standards

Conflict of Interest

The authors declare that they have no conflict of interest.

Informed Consent and Ethical Approvement

All procedures performed in the study were in accordance with the ethical standards of the Institutional Research Committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Informed consent was obtained from all individual participants included in the study.


  1. 1.
    Benoit SC, Hunter TD, Francis DM, et al. Use of bariatric outcomes longitudinal database (BOLD) to study variability in patient success after bariatric surgery. Obes Surg. 2014;24:936–43.PubMedGoogle Scholar
  2. 2.
    Carey DG, Pliego GJ, Raymond RL. Body composition and metabolic changes following bariatric surgery: effects on fat mass, lean mass and basal metabolic rate: six months to one year follow-up. Obes Surg. 2006;16(12):1602–8. Scholar
  3. 3.
    Azevedo de Aquino L, Elaine S, de Souza J, et al. Bariatric surgery: impact on body composition after roux-en-Y gastric bypass. Obes Surg. 2012;22(2):195–200. Scholar
  4. 4.
    Carrasco F, Papapietro K, Csendes A, et al. Changes in resting energy expenditure and body composition after weight loss following roux-en-Y gastric bypass. Obes Surg. 2007;17(5):608–16. Scholar
  5. 5.
    Fried M, Yumuk V, Oppert JM, et al. European Association for the study of obesity; International Federation for the surgery of obesity-European chapter. Interdisciplinary European guidelines on metabolic and bariatric surgery. Obes Facts. 2013;6(5):449–68. Epub 2013 Oct 11CrossRefPubMedPubMedCentralGoogle Scholar
  6. 6.
    Larrad Á, Sánchez-Cabezudo C. Indicadores de calidad en cirugía bariátrica y criterios de éxito a largo plazo. Cir Esp Madrid España. 2004;75(3):301–4.Google Scholar
  7. 7.
    Lutfi R, Torquati A, Sekhar N, et al. Predictors of success after laparoscopic gastric bypass: a multivariate analysis of socioeconomic factors. Surg Endosc. 2006;20(6):864–7. Scholar
  8. 8.
    Das SK, Roberts SB, Kehayias JJ, et al. Body composition assessment in extreme obesity and after massive weight loss induced by gastric bypass surgery. Am J Physiol Endocrinol Metab. 2003;284:1080–8.CrossRefGoogle Scholar
  9. 9.
    Wadström C, Backman L, Forsbeg AM, et al. Body composition and muscle constituents during weight loss: studies in obese patients following gastroplasty. Obese Surg. 2000;10(3):203–13. Scholar
  10. 10.
    Fajardo-Cevallos R, Lajous M, Gamino R, et al. Derivación gastroyeyunal laparoscópica en obesidad mórbida. Experiencia inicial en el INCMNSZ. Asociación Mexicana de Cirugía Endoscópica, A.C. 2001;2(3):127–33.Google Scholar
  11. 11.
    Chaston TB, Dixon JB, O’Brien PE. Changes in fat-free mass during significant weight loss: a systematic review. Int J Obes. 2007;31(5):743–50. Scholar
  12. 12.
    Frühbeck G. Bariatric and metabolic surgery: a shift in eligibility and success criteria. Nat Rev Endocrinol. 2015 Aug;11(8):465–77. Scholar
  13. 13.
    Gómez-Ambrosi J, Andrada P, Valentí V, et al. Dissociation of body mass index, excess weight loss and body fat percentage trajectories after 3 years of gastric bypass: relationship with metabolic outcomes. Int J Obes. 2017 Sep;41(9):1379–87. Scholar
  14. 14.
    Metcalf B, Rabkin RA, Rabkin JM, et al. Weight loss composition: the effects of exercise following obesity surgery as measured by bioelectrical impedance analysis. Obes Surg. 2005;15(2):183–6. Scholar
  15. 15.
    Ma Y, Pagoto SL, Olendzki BC, et al. Predictors of weight status following laparoscopic gastric bypass. Obes Surg. 2006;16(9):1227–31. Scholar
  16. 16.
    Courcoulas AP, Christian NJ, Belle SH, et al. Longitudinal assessment of bariatric surgery (LABS) consortium. Weight change and health outcomes at 3 years after bariatric surgery among individuals with severe obesity. JAMA. 2013 Dec 11;310(22):2416–25. Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2017

Authors and Affiliations

  • Verónica Vázquez-Velázquez
    • 1
    Email author
  • Alexandra Rodríguez González
    • 2
  • Samuel Ordoñez Ortega
    • 3
  • Marcela Rodríguez Flores
    • 1
  • Miguel F. Herrera
    • 4
  • Juan Pablo Pantoja
    • 4
  • Mauricio Sierra
    • 4
  • Claudia González-Jáuregui Prida
    • 5
  • Juan Eduardo García García
    • 1
  1. 1.Obesity and Eating Disorders Clinic Instituto Nacional de Ciencias Médicas y Nutrición Salvador ZubiránMexico CityMexico
  2. 2.Universidad Iberoamericana Mexico CityMexico
  3. 3.Hospital General de Zona 30Mexico CityMexico
  4. 4.Department of SurgeryInstituto Nacional de Ciencias Médicas y Nutrición Salvador ZubiránMexico CityMexico
  5. 5.Hospital Medica SurMexico CityMexico

Personalised recommendations