Validity of ultrasonograph muscle thickness measurements for estimating muscle volume of knee extensors in humans
Validity of ultrasonograph muscle thickness measurements for estimating muscle volume of knee extensors in humans
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DOI：
10.1007/s00421-001-0533-9
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发表时间：
2002-01-01
影响因子：
3
通讯作者：
Fukunaga, T
中科院分区：
文献类型：
--
作者：
Miyatani, M;Kanehisa, H;Fukunaga, T
本研究旨在探讨使用超声仪肌肉厚度 (MT) 测量来估计股四头肌肌肉体积 (MV) 作为磁共振成像 (MRI) 的替代方法的适用性。受试者为 46 名年龄在 20 至 70 岁之间的男性，他们被随机分配到验证组或交叉验证组。在验证组中，使用多重回归方程和简单回归方程，该方程使用一组在大腿中部和大腿长度处确定的 MT 值 (1) 与 pi 的乘积。 (MT/2)(2)。和 1 [pi.(MT/2)(2).1]。分别作为自变量，导出来估计 MRI 测量的 MV。由于这两个方程是交叉验证的，因此将两组数据合并以生成最终的预测方程： MV (cm(3))=(MT x 311.732)+(1 x 53,346) -2058.529 作为多元回归方程，MV (cm(3)) = [pi.(MT/ 2)(2).1] x 1.1176 663.040 作为 简单的回归方程。在多元回归方程中，NIT 解释了 MRI 测量的 MV 变化的 75%。方程的r(2) 和估计标准误差(SEE) 分别为0.824 和175.6 cm(3) (10.6%)。对于多元回归方程，对于简单回归方程分别为 0.829 和 173.7 cm(3) (10.5%)。因此。目前的结果表明，超声波仪在大腿中部的 NIT 测量对于估计膝关节伸肌的 MV 很有用。然而，观察到的 SEE 值表明，本研究中获得的预测方程可能仅限于人群研究，而不是纵向研究中的个体评估。
This study aimed to investigate the suitability of using ultrasonograph muscle thickness (MT) measurements to estimate the muscle volume (MV) of the quadriceps femoris as an alternative approach to magnetic resonance imaging (MRI). The subjects were 46 men aged from 20 to 70 years who were randomly allocated to either a validation or a cross-validation group, In the validation group, multiple and simple regression equations, which used a set of MT values determined at mid-thigh and thigh length (1) and the product of pi. (MT/2)(2). and 1 [pi.(MT/2)(2).1]. respectively, as independent variables, were derived to estimate the MV measured by MRI. Because the two equations were cross-validated, the data from the two groups were pooled to generate the final prediction equations: MV (cm(3))=(MT x 311.732)+(1 x 53,346) -2058.529 as the multiple regression equation and MV (cm(3)) = [pi.(MT/ 2)(2).1] x 1.1176 663.040 as the simple regression equation. In the multiple regression equation, NIT explained 75% of the variation in the MV measured by MRI. The r(2) and the standard error of the estimate (SEE) of the equations were 0.824 and 175.6 cm(3) (10.6%), respectively. for the multiple regression equation and 0.829 and 173.7 cm(3) (10.5%), respectively, for the simple regression equation. Thus. the present results indicate that ultrasonograph NIT measurements at mid-thigh are useful for estimating the MV of knee extensors. However, the observed SEE values suggest that the prediction equation obtained in this study may be limited to population studies rather than individual assessments in longitudinal studies.