Obesity Surgery

, Volume 26, Issue 7, pp 1443–1447 | Cite as

Resting Energy Expenditure and Body Composition of Women with Weight Regain 24 Months After Bariatric Surgery

  • Daniela Lopes GomesEmail author
  • Dyanara de Almeida Oliveira
  • Eliane Said Dutra
  • Nathalia Pizato
  • Kênia Mara Baiocchi de Carvalho
Original Contributions



Weight regain 24 months after Roux-en-Y gastric bypass (RYGB) and low protein intake in patients without protein supplementation can favor fat-free mass loss and reduce resting energy expenditure (REE). We aimed to assess REE and its association with the body composition of women with weight regain and no protein supplementation in the late postoperative period of RYGB.


We determined the body mass index (BMI), REE by indirect calorimetry, body composition by tetrapolar bioelectrical impedance analysis, and energy intake by two 24-h recalls of 34 patients with at least 5 % of weight regain and no protein supplementation. The software SPSS v.17 analyzed the data calculating measures of central tendency and dispersion and using Pearson’s correlation to test the association between the variables and the multivariate linear regression model at a p < 0.05 significance level.


Postoperative period was positively associated with weight regain (r = 0.39; p = 0.023). The mean percentages of fat and fat-free masses were 45.1 ± 8.3 % and 54.3 ± 8.1 %, respectively. The mean REE was 1424.7 ± 187.2 kcal (14 kcal/kg of the current weight), mean energy intake was 1258.6 ± 454.3 kcal, and mean protein intake was 0.9 g/kg of the ideal weight ± 0.3. Fat-free mass was positively associated with REE regardless of protein intake and postoperative period.


Female bariatric patients with weight regain and no protein supplementation lose fat-free mass, lowering their REE. Health practices that promote maintenance of BMI and body composition may lead to improved outcomes of bariatric surgery.


Bariatric surgery Resting energy expenditure Body composition 



24-h recalls


American Association of Clinical Endocrinologists/The Obesity Society/American Society for Metabolic & Bariatric surgery


Body fat


Body mass index


Fat-free mass


Resting energy expenditure


Roux-en-Y gastric bypass



This study was sponsored by CNPQ (process number 476459/2011-7; protocol number 14/2011).

Authors’ Contributions

DLG conceived of the study, participated in the acquisition of data, performed the statistical analysis and interpretation of data, and helped to draft the manuscript. DAO participated in the acquisition and interpretation of data. ESD participated in its design and coordination and helped to draft the manuscript. NMPP participated in its design and helped to draft the manuscript. KMBC conceived of the study, participated in its design and coordination, and helped to draft the manuscript

Ethics Approval

The present study was approved by the Research Ethics Committee of the State Department of Health under protocol number 99467. All participants signed an informed consent form.


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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Daniela Lopes Gomes
    • 1
    Email author
  • Dyanara de Almeida Oliveira
    • 1
  • Eliane Said Dutra
    • 1
  • Nathalia Pizato
    • 1
  • Kênia Mara Baiocchi de Carvalho
    • 1
  1. 1.Department of NutritionUniversity of BrasíliaBrasíliaBrazil

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