Moment arms and musculotendon lengths estimation for a three-dimensional lower-limb model
Moment arms and musculotendon lengths estimation for a three-dimensional lower-limb model
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DOI：
10.1016/j.jbiomech.2003.12.017
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发表时间：
2004-09-01
影响因子：
2.4
通讯作者：
Weber, HI
中科院分区：
文献类型：
--
作者：
Menegaldo, LL;Fleury, ADT;Weber, HI
本文提出了一组多项式表达式，可用作回归方程来估计 43 个下肢肌腱执行器的长度和三维力臂。这些方程允许人们以较低的计算成本找到大型肌肉骨骼模型数值模拟所需的肌肉肌腱几何参数。这些生物力学参数的标称值是使用公共领域的下肢肌肉骨骼模型建立的（IEEE Trans. Biomed. Eng. 37 (1990) 757）。为了拟合这些标称值，根据每个肌肉腱致动器所跨越的关节的广义坐标的数量，生成了具有不同复杂程度的回归方程。最小二乘拟合用于确定回归方程系数。评估拟合优度和置信区间，并选择最佳拟合方程。 (C) 2004 年，爱思唯尔有限公司出版。
This paper presents a set of polynomial expressions that can be used as regression equations to estimate length and three-dimensional moment arms of 43 lower-limb musculotendon actuators. These equations allow one to find, at a low computational cost, the musculotendon geometric parameters required for numerical simulation of large musculoskeletal models. Nominal values for these biomechanical parameters were established using a public-domain musculoskeletal model of the lower limb (IEEE Trans. Biomed. Eng. 37 (1990) 757). To fit these nominal values, regression equations with different levels of complexity were generated, based on the number of generalized coordinates of the joints spanned by each musculotendon actuator. Least squares fitting was used to identify regression equation coefficients. The goodness of the fit and confidence intervals were assessed, and the best fitting equations selected. (C) 2004 Published by Elsevier Ltd.