Racial differences in central adiposity in a longitudinal cohort of black and white adolescent females

BMC Pediatrics

Research Article

David J Tybor¹  Alice H Lichtenstein²  Gerard E Dallal²  Aviva Must³  Stephen R Daniels⁴ 

[1] Friedman School of Nutrition Science and Policy at Tufts University, Boston, MA, USA;Jean Mayer USDA HNRC at Tufts University, Boston, MA, USA;Tufts University School of Medicine, Boston, MA, USA;University of Colorado School of Medicine, Denver and Aurora, Colorado, USA;

关键词: Waist Circumference;    Racial Difference;    Visceral Adipose Tissue;    White Female;    Black Female;   

DOI  :  10.1186/1471-2431-10-2

 received in 2009-03-12, accepted in 2010-01-21,  发布年份 2010

来源: Springer

【 摘 要 】

BackgroundCentral adiposity is related to chronic disease risk in adolescents. Racial differences in waist circumference have been identified using cross-sectional data from this age group. We tested for racial differences in age-related growth in waist circumference in a longitudinal cohort of black and white adolescent girls.MethodsWe analyzed 9 years of publicly available data from the National Heart, Lung, and Blood Institute Growth and Health Study, for 2379 girls (1213 black and 1166 white) enrolled at age 9-10 years in 1987-1988 and followed annually. Individual growth trajectories of waist circumference were constructed for girls with >3 annual measures. Mixed models were used to compare changes in waist circumference during adolescence between black and white females. BMI and age at menarche were included in the models.ResultsAt each age, black females had significantly higher waist circumference. Mean annual increase in waist circumference was significantly higher for black females compared to white females (1.46 cm/yr vs. 1.36 cm/yr, respectively). After adjusting for BMI, the mean annual increase in waist circumference for white females was significantly higher than for black females (0.08 cm/yr vs. -0.07 cm/yr, respectively). These relationships remained significant after adjusting for age at menarche.ConclusionsBlack females had significantly steeper increases in waist circumference over adolescence than white females. After adjusting for BMI and age at menarche, however, the annual increase in waist circumference for black females was significantly shallower than for their white peers. These data suggest racial differences in the deposition of fat over the adolescent period.

【 授权许可】

CC BY   
© Tybor et al; licensee BioMed Central Ltd. 2010