摘要
为了解青少年身体成分中瘦体重和体脂含量究竟那种成分对骨矿含量影响起主要作用，我们对５８名男性青少年（年龄１７．２±０．７岁，范围：１５．５—１８．７岁）进行人体测量，计算出瘦体重和体脂含量，用ＢＨ－６０１２型二维扫描单光子骨密度仪测量非优势侧桡骨中远１／３处及桡骨超远端骨矿含量（ＢＭＣ，ｇ）、骨宽（ＢＷ，ｃｍ）、骨密度（ＢＭＤ，ｇ／ｃｍ２），为消除身高的影响分别计算桡骨中远１／３处和桡骨超远端ＢＭＤ／身高值（ＢＭＤ／Ｈ，ｇ／ｃｍ３）。以桡骨中远１／３处及桡骨超远端的ＢＭＣ、ＢＭＤ、ＢＭＤ／Ｈ作因变量，年龄、身高、瘦体重、体脂含量作自变量进行多元线性回归分析，结果表明瘦体重和体脂含量均与骨矿含量有关（Ｐ＜０．０５），但经骨形态即骨宽较正的骨密度及身高校正的ＢＭＤ／Ｈ仅与瘦体重有关（Ｐ＜０．０５），因此说明男性青少年身体成分中瘦体重对桡骨超远端骨密度的影响作用较大。
Both lean body mass(LBM)and fat body mass(FBM)have effccts on bone mass;however,it remains unclear which body mass compartment is truly correlated with bone mass.To resolve this issue,we collected basic anthropometric data in 58 adolescent males(age range 15.5—18.7 years,mean 17.2±0.7 years)and calculated LBM and FBM.Bone mineral content(BMC,g),bone mineral density (BMD,g/cm2) and bone width were mcasurcd at the radius sites(junction of the middle and distal thirds,the end)using BH6012SPA.BMD/height(BMD/H,g/cm3)was also calculated for each site.In linear regression analysis and Pearson correlation coefficient,BMC,BMD and BMD/H for the radius sites was modeled as the dependent variables,while age,height,LBM,and FBM were treated as the independent variables.The results indicate that LBM nad FBM were correlated with BMC(P<005).However,as BMC was adjusted for bone width or body size using BMD or BMD/H,only LBM was correlation factor(P<0.05).Thus.LBM has more important effects on bone density than FBM in adolescent males.
出处
《中国骨质疏松杂志》
CAS
CSCD
1998年第3期33-35,共3页
Chinese Journal of Osteoporosis
