Influence of gastric bypass surgery on resting energy expenditure, body composition, physical activity, and thyroid hormones in morbidly obese patients

Mehri Mirahmadian,1 Motahareh Hasani,2 Ehsaneh Taheri,3 Mostafa Qorbani,4 Saeed Hosseini5 1Department of Nutrition and Biochemistry, School of Nutrition Sciences and Dietetics, Tehran University of Medical Sciences, 2School of Public Health, Iran University of Medical Sciences, 3Endocrinology and Me...

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Autores principales:	Mirahmadian M, Hasani M, Taheri E, Qorbani M, Hosseini S
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2018
Materias:	Gastric bypass surgery Resting energy expenditure body composition Specialties of internal medicine RC581-951
Acceso en línea:	https://doaj.org/article/c866675e1206438c80766cc69dbc430a
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spelling	oai:doaj.org-article:c866675e1206438c80766cc69dbc430a2021-12-02T08:54:24ZInfluence of gastric bypass surgery on resting energy expenditure, body composition, physical activity, and thyroid hormones in morbidly obese patients1178-7007https://doaj.org/article/c866675e1206438c80766cc69dbc430a2018-10-01T00:00:00Zhttps://www.dovepress.com/influence-of-gastric-bypass-surgery-on-resting-energy-expenditure-body-peer-reviewed-article-DMSOhttps://doaj.org/toc/1178-7007Mehri Mirahmadian,1 Motahareh Hasani,2 Ehsaneh Taheri,3 Mostafa Qorbani,4 Saeed Hosseini5 1Department of Nutrition and Biochemistry, School of Nutrition Sciences and Dietetics, Tehran University of Medical Sciences, 2School of Public Health, Iran University of Medical Sciences, 3Endocrinology and Metabolism Molecular and Cellular Sciences Institute, Tehran University of Medical Sciences, 4Noncommunicable Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, 5School of Nutrition, Tehran University of Medical Sciences, Tehran, Iran Introduction: One way to lose weight is bariatric surgery. Various studies have shown that after Roux-en-Y gastric bypass (RYGB), resting energy expenditure (REE) decreased may be a result of changes in fat-free mass (FFM) and thyroid-stimulating hormone levels. The aim of our study was to assess changes in body composition, REE, and thyroid hormones in patients undergoing RYGB.Methods: A total of 42 patients participated (21 undergoing RYGB and 21 age- and weight-matched subjects as controls) in our study. Weight, body-mass index, body composition, resting metabolic rate, physical activity, and thyroid hormones were measured at baseline in cases and 3 months after surgery in case and control groups.Results: At 3 months after surgery, patients lost an average of 21.7±1.4 kg weight, and fat mass, FFM, and REE decreased significantly. REE was higher in cases compared to controls. T4, T3, and thyroid-stimulating hormone at 3 months after RYGB decreased, but the decrease was significant only in T4 compared to controls. FFM was higher and fat mass lower in cases compared to controls.Conclusion: We detected a meaningful difference in REE before and after surgery, but we did not detect any meaningful difference in REE between controls and cases. Keywords: gastric bypass surgery, resting energy expenditure, body compositionMirahmadian MHasani MTaheri EQorbani MHosseini SDove Medical PressarticleGastric bypass surgeryResting energy expenditurebody compositionSpecialties of internal medicineRC581-951ENDiabetes, Metabolic Syndrome and Obesity: Targets and Therapy, Vol Volume 11, Pp 667-672 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Gastric bypass surgery Resting energy expenditure body composition Specialties of internal medicine RC581-951
spellingShingle	Gastric bypass surgery Resting energy expenditure body composition Specialties of internal medicine RC581-951 Mirahmadian M Hasani M Taheri E Qorbani M Hosseini S Influence of gastric bypass surgery on resting energy expenditure, body composition, physical activity, and thyroid hormones in morbidly obese patients
description	Mehri Mirahmadian,1 Motahareh Hasani,2 Ehsaneh Taheri,3 Mostafa Qorbani,4 Saeed Hosseini5 1Department of Nutrition and Biochemistry, School of Nutrition Sciences and Dietetics, Tehran University of Medical Sciences, 2School of Public Health, Iran University of Medical Sciences, 3Endocrinology and Metabolism Molecular and Cellular Sciences Institute, Tehran University of Medical Sciences, 4Noncommunicable Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, 5School of Nutrition, Tehran University of Medical Sciences, Tehran, Iran Introduction: One way to lose weight is bariatric surgery. Various studies have shown that after Roux-en-Y gastric bypass (RYGB), resting energy expenditure (REE) decreased may be a result of changes in fat-free mass (FFM) and thyroid-stimulating hormone levels. The aim of our study was to assess changes in body composition, REE, and thyroid hormones in patients undergoing RYGB.Methods: A total of 42 patients participated (21 undergoing RYGB and 21 age- and weight-matched subjects as controls) in our study. Weight, body-mass index, body composition, resting metabolic rate, physical activity, and thyroid hormones were measured at baseline in cases and 3 months after surgery in case and control groups.Results: At 3 months after surgery, patients lost an average of 21.7±1.4 kg weight, and fat mass, FFM, and REE decreased significantly. REE was higher in cases compared to controls. T4, T3, and thyroid-stimulating hormone at 3 months after RYGB decreased, but the decrease was significant only in T4 compared to controls. FFM was higher and fat mass lower in cases compared to controls.Conclusion: We detected a meaningful difference in REE before and after surgery, but we did not detect any meaningful difference in REE between controls and cases. Keywords: gastric bypass surgery, resting energy expenditure, body composition
format	article
author	Mirahmadian M Hasani M Taheri E Qorbani M Hosseini S
author_facet	Mirahmadian M Hasani M Taheri E Qorbani M Hosseini S
author_sort	Mirahmadian M
title	Influence of gastric bypass surgery on resting energy expenditure, body composition, physical activity, and thyroid hormones in morbidly obese patients
title_short	Influence of gastric bypass surgery on resting energy expenditure, body composition, physical activity, and thyroid hormones in morbidly obese patients
title_full	Influence of gastric bypass surgery on resting energy expenditure, body composition, physical activity, and thyroid hormones in morbidly obese patients
title_fullStr	Influence of gastric bypass surgery on resting energy expenditure, body composition, physical activity, and thyroid hormones in morbidly obese patients
title_full_unstemmed	Influence of gastric bypass surgery on resting energy expenditure, body composition, physical activity, and thyroid hormones in morbidly obese patients
title_sort	influence of gastric bypass surgery on resting energy expenditure, body composition, physical activity, and thyroid hormones in morbidly obese patients
publisher	Dove Medical Press
publishDate	2018
url	https://doaj.org/article/c866675e1206438c80766cc69dbc430a
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Influence of gastric bypass surgery on resting energy expenditure, body composition, physical activity, and thyroid hormones in morbidly obese patients

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