Very low-calorie diet in candidates for bariatric surgery: change in body composition during rapid weight loss

OBJECTIVE: To analyze the changes in the body composition of morbidly obese patients induced by a very low-calorie diet. METHODS: We evaluated 120 patients selected from a university hospital. Body composition was assessed before and after the diet provided during hospitalization, and changes in we...

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Main Authors: Marcela Pires Serafim, Marco Aurelio Santo, Alexandre Vieira Gadducci, Veruska Magalhães Scabim, Ivan Cecconello, Roberto de Cleva
Format: Article
Language:English
Published: Elsevier España 2019-03-01
Series:Clinics
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1807-59322019000100203&lng=en&tlng=en
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author Marcela Pires Serafim
Marco Aurelio Santo
Alexandre Vieira Gadducci
Veruska Magalhães Scabim
Ivan Cecconello
Roberto de Cleva
author_facet Marcela Pires Serafim
Marco Aurelio Santo
Alexandre Vieira Gadducci
Veruska Magalhães Scabim
Ivan Cecconello
Roberto de Cleva
author_sort Marcela Pires Serafim
collection DOAJ
description OBJECTIVE: To analyze the changes in the body composition of morbidly obese patients induced by a very low-calorie diet. METHODS: We evaluated 120 patients selected from a university hospital. Body composition was assessed before and after the diet provided during hospitalization, and changes in weight, body mass index, and neck, waist and hip circumferences were analyzed. Bioimpedance was used to obtain body fat and fat-free mass values. The data were categorized by gender, age, body mass index and diabetes diagnosis. RESULTS: The patients consumed the diet for 8 days. They presented a 5% weight loss (without significant difference among groups), which represented an 85% reduction in body fat. All changes in body circumference were statistically significant. There was greater weight loss and a greater reduction of body fat in men, but the elderly showed a significantly higher percentage of weight loss and greater reductions in body fat and fat-free mass. Greater reductions in body fat and fat-free mass were also observed in superobese patients. The changes in the diabetic participants did not differ significantly from those of the non-diabetic participants. CONCLUSIONS: The use of a VLCD before bariatric surgery led to a loss of weight at the expense of body fat over a short period, with no significant differences in the alteration of body composition according to gender, age, body mass index and diabetes status.
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spelling doaj.art-578112aa1bc64c0dbbc39cde356a68022022-12-22T02:47:56ZengElsevier EspañaClinics1980-53222019-03-0174010.6061/clinics/2019/e560S1807-59322019000100203Very low-calorie diet in candidates for bariatric surgery: change in body composition during rapid weight lossMarcela Pires SerafimMarco Aurelio SantoAlexandre Vieira GadducciVeruska Magalhães ScabimIvan CecconelloRoberto de ClevaOBJECTIVE: To analyze the changes in the body composition of morbidly obese patients induced by a very low-calorie diet. METHODS: We evaluated 120 patients selected from a university hospital. Body composition was assessed before and after the diet provided during hospitalization, and changes in weight, body mass index, and neck, waist and hip circumferences were analyzed. Bioimpedance was used to obtain body fat and fat-free mass values. The data were categorized by gender, age, body mass index and diabetes diagnosis. RESULTS: The patients consumed the diet for 8 days. They presented a 5% weight loss (without significant difference among groups), which represented an 85% reduction in body fat. All changes in body circumference were statistically significant. There was greater weight loss and a greater reduction of body fat in men, but the elderly showed a significantly higher percentage of weight loss and greater reductions in body fat and fat-free mass. Greater reductions in body fat and fat-free mass were also observed in superobese patients. The changes in the diabetic participants did not differ significantly from those of the non-diabetic participants. CONCLUSIONS: The use of a VLCD before bariatric surgery led to a loss of weight at the expense of body fat over a short period, with no significant differences in the alteration of body composition according to gender, age, body mass index and diabetes status.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1807-59322019000100203&lng=en&tlng=enBody CompositionSevere ObesityBariatric SurgeryWeight LossDiet
spellingShingle Marcela Pires Serafim
Marco Aurelio Santo
Alexandre Vieira Gadducci
Veruska Magalhães Scabim
Ivan Cecconello
Roberto de Cleva
Very low-calorie diet in candidates for bariatric surgery: change in body composition during rapid weight loss
Clinics
Body Composition
Severe Obesity
Bariatric Surgery
Weight Loss
Diet
title Very low-calorie diet in candidates for bariatric surgery: change in body composition during rapid weight loss
title_full Very low-calorie diet in candidates for bariatric surgery: change in body composition during rapid weight loss
title_fullStr Very low-calorie diet in candidates for bariatric surgery: change in body composition during rapid weight loss
title_full_unstemmed Very low-calorie diet in candidates for bariatric surgery: change in body composition during rapid weight loss
title_short Very low-calorie diet in candidates for bariatric surgery: change in body composition during rapid weight loss
title_sort very low calorie diet in candidates for bariatric surgery change in body composition during rapid weight loss
topic Body Composition
Severe Obesity
Bariatric Surgery
Weight Loss
Diet
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1807-59322019000100203&lng=en&tlng=en
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