Lim Jung Sub, Hwang Jin Soon, Cheon Gi Jeong, Lee Jun Ah, Kim Dong Ho, Park Kyung Duk, Yi Kyung Hee
Department of Pediatrics, Korea Cancer Center Hospital, Seoul, Republic of Korea.
J Clin Densitom. 2009 Apr-Jun;12(2):229-37. doi: 10.1016/j.jocd.2008.12.008. Epub 2009 Feb 10.
The objective of this study was to gain normal reference values and to evaluate gender differences in total and regional body composition changes according to age and Tanner stage by dual-energy X-ray absorptiometry in Korean. Four hundred and forty-nine healthy subjects, aged 5-20 yr were enrolled. Until 9 yr of age, males had a higher lean tissue mass and a lower percent body fat (%BF) than the females (12.6% vs 10.0%, p<0.01). These differences were not evident from 10 to 12.9 yr because of early pubertal progression in girls. After 13 yr, a significant sex difference in the body compositions were observed again. In late teens, females have higher %BF than males (25.6% vs 12.3%, p<0.01). However, females have lower android-gynoid percent fat ratio than males at Tanner stages (TSs) 4 and 5 (p<0.01). These differences are because of significant increase of gynoid lean tissue mass after 13 yr in males. The reference data would be useful for future research related to growth and obesity in Korean children and adolescents.
本研究的目的是通过双能X线吸收法获取韩国人群按年龄和坦纳分期划分的全身及局部身体成分变化的正常参考值,并评估性别差异。招募了449名5至20岁的健康受试者。9岁之前,男性的瘦组织质量高于女性,体脂百分比(%BF)低于女性(12.6%对10.0%,p<0.01)。由于女孩青春期提前,10至12.9岁时这些差异不明显。13岁以后,身体成分再次出现显著的性别差异。在青少年后期,女性的%BF高于男性(25.6%对12.3%,p<0.01)。然而,在坦纳分期(TSs)4和5期,女性的腹部与臀部脂肪比例低于男性(p<0.01)。这些差异是由于13岁后男性臀部瘦组织质量显著增加。这些参考数据将有助于未来有关韩国儿童和青少年生长及肥胖的研究。