The accuracy of volume estimates using ultrasound muscle thickness measurements in different muscle groups
The accuracy of volume estimates using ultrasound muscle thickness measurements in different muscle groups
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DOI：
10.1007/s00421-003-0974-4
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发表时间：
2004-03-01
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
本研究旨在探讨超声测量肌肉厚度（MT）估计肢体肌肉体积（MV）的准确性。在27名健康男性（23-40岁）中，分别从单个超声图像和多个磁共振成像（MRI）扫描确定肘屈肌和伸肌、膝伸肌和踝跖屈肌的MT和MV，这些健康男性被分配到验证组（n=14）和交叉验证组（n=13）。在验证组中，分别使用MT和一组MT和肢体长度作为自变量的简单和多元回归方程来估计MRI测量的MV。然而，仅对多元回归方程进行了交叉验证，因此使用汇总数据开发了r（2）为0.787-0.884的预测方程，手肘屈肌的估计标准误为22.1 cm（3）（7.3%），膝伸肌的估计标准误为198.5 cm（3）（11.1%）。这种方法在任何肌肉组中均未引起显著的系统误差，肌肉组之间估计MV的准确性无显著差异。在多元回归方程中，MT对预测MV的相对贡献从膝伸肌的41.9%到手肘屈肌的70.4%不等。因此，当结合肢体长度时，超声MT测量是MV的一个很好的预测指标。然而，对于预测MV，一个简单的方程只使用MT和肌肉群之间的差异，在多元回归方程中的MT的相对贡献的不适合表明，需要进一步研究的肢体部位选择和肌肉分析MT测量。
This study aimed to investigate the accuracy of estimating the volume of limb muscles (MV) using ultrasonographic muscle thickness (MT) measurements. The MT and MV of each of elbow flexors and extensors, knee extensors and ankle plantar flexors were determined from a single ultrasonographic image and multiple magnetic resonance imaging (MRI) scans, respectively, in 27 healthy men (23-40 years of age) who were allocated to validation (n=14) and cross-validation groups (n=13). In the validation group, simple and multiple regression equations using MT and a set of MT and limb length, respectively, as independent variables were derived to estimate the MV measured by MRI. However, only the multiple regression equations were cross-validated, and so the prediction equations with r(2) of 0.787-0.884 and the standard error of estimate of 22.1 cm(3) (7.3%) for the elbow flexors to 198.5 cm(3) (11.1%) for the knee extensors were developed using the pooled data. This approach did not induce significant systematic error in any muscle group, with no significant difference in the accuracy of estimating MV between muscle groups. In the multiple regression equations, the relative contribution of MT for predicting MV varied from 41.9% for the knee extensors to 70.4% for the elbow flexors. Thus, ultrasonographic MT measurement was a good predictor of MV when combined with limb length. For predicting MV, however, the unsuitability of a simple equation using MT only and the difference between muscle groups in the relative contribution of MT in multiple regression equations indicated a need for further research on the limb site selected and muscle analyzed for MT measurement.