Morrison J A, Barton B, Biro F M, Sprecher D L, Falkner F, Obarzanek E
Division of Cardiology, Children's Hospital Medical Center, Cincinnati, Ohio.
J Pediatr. 1994 Jun;124(6):889-95. doi: 10.1016/s0022-3476(05)83176-2.
To assess the relationship between pubertal maturation and obesity in 9- and 10-year-old black and white girls.
Cross-sectional analysis of cohort baseline data.
A cohort of 2379 girls recruited from selected schools in Richmond, Calif., and greater Cincinnati, Ohio, and from the membership rolls of a prepaid group practice in greater Washington, D.C.
Sixty-four percent of black girls had begun pubertal maturation compared with 33% of white girls. In prepubertal girls, racial differences in height, weight, body mass index (kilograms per square meter) and skin-fold thickness were not significant. Within each race, onset of pubertal maturation was associated with greater height, weight, body mass index, and skin-fold measurements. Within 9-year-old girls who had begun pubertal maturation but not reached menarche, black girls were taller and heavier than white girls. Among pubertal but premenarcheal 10-year-old subjects, black girls were taller and heavier and had greater body mass index and subscapular skin-fold values. After analyses were adjusted for pubertal maturation stage by means of pubic hair development, 10-year-old pubertal black girls remained taller and heavier, but racial differences in body mass index and the sum of skin-fold measurements ceased to be significant.
These findings suggest that the initiation of racial differences in obesity are related, at least temporally, to pubertal maturation.
评估9岁和10岁黑人和白人女孩青春期发育与肥胖之间的关系。
对队列基线数据进行横断面分析。
从加利福尼亚州里士满、俄亥俄州大辛辛那提市的选定学校以及华盛顿特区大都会区的一个预付费团体诊所的成员名单中招募的2379名女孩队列。
64%的黑人女孩已开始青春期发育，而白人女孩的这一比例为33%。在青春期前女孩中，身高、体重、体重指数（每平方米千克数）和皮褶厚度的种族差异不显著。在每个种族中，青春期发育的开始与更高的身高、体重、体重指数和皮褶测量值相关。在已开始青春期发育但尚未初潮的9岁女孩中，黑人女孩比白人女孩更高、更重。在青春期但初潮前的10岁受试者中，黑人女孩更高、更重，体重指数和肩胛下皮褶值更大。通过阴毛发育对青春期发育阶段进行分析调整后，10岁青春期黑人女孩仍然更高、更重，但体重指数和皮褶测量值总和的种族差异不再显著。
这些发现表明，肥胖的种族差异开始至少在时间上与青春期发育有关。
