Bone-muscle strength indices for the human lower leg
Bone-muscle strength indices for the human lower leg
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DOI：
10.1016/s8756-3282(00)00327-6
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发表时间：
2000-08-01
期刊：
影响因子：
4.1
通讯作者：
Felsenberg, D
中科院分区：
文献类型：
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作者：
Rittweger, J;Beller, G;Felsenberg, D
这项横断面研究是基于从小腿的图像进行评估，外周定量计算机断层扫描（pQCT）的测量进行了39名女性和38名男性对照组和15名女性职业排球运动员，所有18和30岁之间。在距远端4%、14%、33%和66%的小腿水平获得图像，评估骨和肌肉横截面积以及骨的密度加权面积阻力矩和惯性矩。根据这些数据，开发了肌肉-骨强度指数（MBSI）用于压缩（CI = 100）。骨面积/肌肉面积）和弯曲（BI = 100骨面积阻力矩/肌肉面积/胫骨长度）。在所研究的所有切片水平均发现肌肉横截面积与I，1之间存在显著相关性，在14%的切片中观察到压缩的最强相关性（相关系数r = 0.74），其中平均4.10 +/- 0.46 cm（2）骨与100 cm（2）肌肉相关。14%水平的压缩指数（CI）与胫骨长度无关。有趣的是，15名运动员的CI明显高于对照组。这很可能是由于运动员的紧张程度更高。弯曲相关性最高的是胫骨长度33%处的皮毛前后弯曲（r = 0.81），其中阻力面积矩R平均为4.21 +/- 0.53 cm（3）/100 cm（2）肌肉/m胫骨长度。对珩磨机面积惯性矩的分析表明，在33%和66%水平上，屈曲可能是弯曲的原因，而在14%水平上则不是。MBSI没有发现性别差异。同样，年龄也没有显著影响。数据表明，骨结构主要取决于肌肉横截面和张力的发展。此外，珩磨几何形状（例如，胫骨长度）影响骨矿物质的几何分布，因为已经发现，与相同的抗压强度相适应的长骨比短骨宽。我们得出结论，MBSI为骨疾病提供了一个强有力的诊断工具，并可能有助于改善骨代谢和其他疾病的治疗。(C)2000年，Elsevier Science Inc.保留所有权利。
This cross-sectional study is based on images from the lower leg as assessed by peripheral quantitative computer tomography (pQCT) Measurements were performed in 39 female and 38 male control subjects and 15 female professional volleyball players, all between 18 and 30 years of age. The images were obtained at shank levels of 4%, 14%, 33%, and 66% from the distal end, Bone and muscle cross-sectional areas, and the bones' density-weighted area moment of resistance and of inertia were assessed. From these, muscle-bone strength indices (MBSIs) were developed for compression (CI = 100 . bone area/muscle area) and bending (BI = 100 bone area moment of resistance/muscle area/tibia length). Significant correlations between muscle cross-sectional area and I,one were found at all section levels investigated, The strongest correlation for compression was observed in the sections at 14% (correlation coefficient r = 0.74), where 4.10 +/- 0.46 cm(2) bone, on average, was related to 100 cm(2) muscle. The compression index (CI) at the 14% level was independent of the tibia length. Interestingly, the 15 athletes had significantly greater CIs than the control subjects. This is most probably due to the greater tension development in the athletes. The highest correlation for bending was fur anteroposterior bending at 33% of tibia length (r = 0.81), where the area moment of resistance, R, was on, average, 4.21 +/- 0.53 cm(3)/100 cm(2) muscle/m tibia length. Analysis of the hones' area moment of inertia showed that buckling is a possible cause of bending at the 33% and 66% levels, but not at the 14% level, No gender differences in MBSI were found. Likewise, age was without significant effect. The data show that bone architecture depends critically on muscle cross section and tension development. Moreover, hone geometry (e.g., the tibia length) influences the geometrical distribution of bone mineral, as it was found that long bones adapted to the same compressive strength are wider than short ones, We conclude that MBSIs offer a powerful diagnostic tool for bone disorders and may contribute to improving the treatment of bone metabolic and other diseases. (C) 2000 by Elsevier Science Inc. AII rights reserved.