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Meal-induced thermogenesis and macronutrient oxidation in lean and obese women after consumption of carbohydrate-rich and fat-rich meals.
MedLine Citation:
PMID:  20579851     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
OBJECTIVE: To examine differences in meal-induced thermogenesis and macronutrient oxidation between lean and obese women after consumption of two different isocaloric meals, one rich in carbohydrate (CHO) and one rich in fat.
METHODS: A total of 19 lean and 22 obese women were studied on two occasions, 1 wk apart. In one visit they consumed a CHO-rich meal and in the other visit a fat-rich meal. The two meals were isocaloric and were given in random order. Resting energy expenditure and macronutrient oxidation rates were measured and calculated in the fasting state and every hour for 3 h after meal consumption.
RESULTS: Meal-induced thermogenesis was not different between lean and obese subjects after the CHO-rich (P = 0.89) or fat-rich (P = 0.32) meal, but it was significantly higher after the CHO-rich compared with the fat-rich meal in the lean and the obese individuals (P < 0.05). Protein oxidation rate increased slightly but significantly after the test meals in both groups (P < 0.01). Fat oxidation rate decreased after consumption of the CHO-rich meal (P < 0.001), whereas it increased after consumption of the fat-rich meal in both groups (P < 0.01). CHO oxidation rate increased in both groups after consumption of the CHO-rich meal (P < 0.001). Oxidation rates of protein, fat, and CHO during the experiment were not significantly different between lean and obese participants.
CONCLUSION: Meal-induced thermogenesis and macronutrient oxidation rates were not significantly different between lean and obese women after consumption of a CHO-rich or a fat-rich meal.
Authors:
Nicholas Tentolouris; Kleopatra Alexiadou; Alexander Kokkinos; Eustathia Koukou; Despoina Perrea; Despoina Kyriaki; Nicholas Katsilambros
Publication Detail:
Type:  Journal Article     Date:  2010-06-26
Journal Detail:
Title:  Nutrition (Burbank, Los Angeles County, Calif.)     Volume:  27     ISSN:  1873-1244     ISO Abbreviation:  Nutrition     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-02-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8802712     Medline TA:  Nutrition     Country:  United States    
Other Details:
Languages:  eng     Pagination:  310-5     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 Elsevier Inc. All rights reserved.
Affiliation:
First Department of Propaedeutic Medicine, Athens University Medical School, Laiko General Hospital, Athens, Greece.
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