Document Detail

Metabolic propensity toward obesity in black vs white females: responses during rest, exercise and recovery.
MedLine Citation:
PMID:  8696425     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To examine the existence of a metabolic propensity toward the development of obesity in black vs white females.
DESIGN: Cross-sectional comparison of responses during 30 min of rest, 30 min of treadmill exercise at 65% VO2max, and 30 min of recovery.
SUBJECTS: 22 (11 black, 11 white) healthy, normal weight, sedentary females with a family history of obesity.
MEASUREMENTS: Biometric measures (body mass index, waist-to-hip ratio, and body composition by hydrodensiometry) to insure inter-group homogeneity. Oxygen consumption (VO2), respiratory exchange ratio (RER), insulin, glucose and free fatty acids (FFA) during rest, exercise and recovery were measured to test for metabolic differences between the groups.
RESULTS: Black females displayed lower VO2 during rest (p = 0.04) and recovery (p = 0.04), higher RER during rest, exercise and recovery (p = 0.003), and higher levels of insulin (p = 0.03). No significant differences were observed for levels of blood glucose (p = 0.29) or serum FFA (p = 0.73).
CONCLUSION: Normal weight black and white females with comparable family histories of obesity exhibit dissimilar metabolic responses during rest, exercise and recovery. Lower rates of oxygen consumption, higher metabolic reliance on carbohydrate, and higher levels of insulin may slowly impact energy balance predisposing these black females toward the eventual onset of obesity.
L F Chitwood; S P Brown; M J Lundy; M A Dupper
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  International journal of obesity and related metabolic disorders : journal of the International Association for the Study of Obesity     Volume:  20     ISSN:  -     ISO Abbreviation:  Int. J. Obes. Relat. Metab. Disord.     Publication Date:  1996 May 
Date Detail:
Created Date:  1996-09-05     Completed Date:  1996-09-05     Revised Date:  2014-06-03    
Medline Journal Info:
Nlm Unique ID:  9313169     Medline TA:  Int J Obes Relat Metab Disord     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  455-62     Citation Subset:  IM    
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MeSH Terms
African Continental Ancestry Group*
Blood Glucose / metabolism
Cross-Sectional Studies
Energy Metabolism
European Continental Ancestry Group*
Exercise / physiology*
Fatty Acids, Nonesterified / blood
Insulin / blood
Obesity / physiopathology*
Oxygen Consumption
Pulmonary Gas Exchange
Rest / physiology*
Risk Factors
Reg. No./Substance:
0/Blood Glucose; 0/Fatty Acids, Nonesterified; 0/Insulin

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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