Resting metabolic rate in African-American and Caucasian girls

被引:55
作者
Yanovski, SZ
Reynolds, JC
Boyle, AJ
Yanovski, JA
机构
[1] NICHHD, DEV ENDOCRINOL BRANCH, NIH, BETHESDA, MD 20892 USA
[2] NIH, OFF DIRECTOR, BETHESDA, MD 20892 USA
[3] NIH, DEPT NUCL MED, WARREN GRANT MAGNUSON CLIN CTR, BETHESDA, MD 20892 USA
来源
OBESITY RESEARCH | 1997年 / 5卷 / 04期
关键词
basal metabolism; body composition; obesity; children; race; ethnicity;
D O I
10.1002/j.1550-8528.1997.tb00558.x
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Recent studies have found a lower resting metabolic rate (RMR) in African-American (AA) women with obesity as compared with Caucasian (C) women with obesity, It is unknown if this difference in RMR is seen in prepubertal girls or in those of average body weight, Therefore, we studied RMR in 21 AA and 24 C girls, ages 7-10, who were well matched for age, weight, body mass index (BMI), and pubertal status, All had BMI between 15% and 85% for age and race, based on data from the First National Health and Nutrition Examination Survey, Fat free mass (FFM) was measured by dual-energy X-ray absorptiometry, RMR was measured with a Deltatrac indirect calorimeter under controlled conditions after the subjects underwent an overnight fast, The slopes of the regression equations were similar for both groups (p=0.7). After adjustment for FEM, the AA girls had a significantly lower RMR than did the C girls (-92 +/- 32 kcal/d, p=0.007 by analysis of covariance). This significance was maintained after exclusion of total body bone mineral content, These data suggest that normal-weight prepubertal AA girls may have reduced resting energy expenditure compared with C girls.
引用
收藏
页码:321 / 325
页数:5
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