Department of Physical Education, Laboratoire de Physiologie et de Biomécanique de la Performance Motrice, Université de Balamand, Al Koura, Lebanon; Laboratoire RELACS, Département STAPS, Université du Littoral Côte d'Opale, Dunkerque, France.
Department of Physical Education, Laboratoire de Physiologie et de Biomécanique de la Performance Motrice, Université de Balamand, Al Koura, Lebanon.
J Clin Densitom. 2013 Jul-Sep;16(3):313-319. doi: 10.1016/j.jocd.2012.03.010. Epub 2012 Jun 12.
The aim of this study was to compare hip bone strength indices in obese, overweight, and normal-weight adolescent girls using hip structure analysis (HSA). This study included 64 postmenarcheal adolescent girls (14 obese, 21 overweight, and 29 normal weight). The 3 groups (obese, overweight, and normal weight) were matched for maturity (years since menarche). Body composition and bone mineral density (BMD) of whole body, lumbar spine, and proximal femur were assessed by dual-energy X-ray absorptiometry (DXA). To evaluate hip bone strength, DXA scans were analyzed at the femoral neck (FN) at its narrow neck (NN) region, the intertrochanteric (IT), and the femoral shaft (FS) by the HSA program. Cross-sectional area and section modulus were measured from hip BMD profiles. Total hip BMD and FN BMD were significantly higher in obese and overweight girls in comparison with normal-weight girls (p < 0.05). However, after adjusting for weight, using a one-way analysis of covariance, there were no significant differences among the 3 groups regarding HSA variables. This study suggests that in obese and overweight adolescent girls, axial strength and bending strength indices of the NN, IT, and FS are adapted to the increased body weight.
本研究旨在使用髋关节结构分析（HSA）比较肥胖、超重和正常体重青春期女孩的髋骨强度指数。本研究纳入了 64 名初潮后的青春期女孩（14 名肥胖，21 名超重，29 名正常体重）。这三组（肥胖、超重和正常体重）在成熟度（初潮后年数）上相匹配。通过双能 X 射线吸收法（DXA）评估全身、腰椎和股骨近端的体成分和骨矿物质密度（BMD）。为了评估髋骨强度，使用 HSA 程序在股骨颈（FN）的狭窄颈（NN）区域、转子间（IT）和股骨干（FS）处对 DXA 扫描进行分析。从髋骨 BMD 曲线中测量了横截面积和截面模数。与正常体重女孩相比，肥胖和超重女孩的总髋骨 BMD 和 FN BMD 显著更高（p<0.05）。然而，在调整体重后，使用单向方差分析协方差，三组之间在 NN、IT 和 FS 的轴向强度和弯曲强度指数方面没有显著差异。本研究表明，在肥胖和超重的青春期女孩中，NN、IT 和 FS 的轴向强度和弯曲强度指数适应了体重的增加。
