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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

Abstract

Aim

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).

Methods

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.

Results

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).

Conclusions

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

Keywords

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

Notes

Acknowledgements

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.

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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

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