Force enhancement and force depression in a modified muscle model used for muscle activation prediction
Force enhancement and force depression in a modified muscle model used for muscle activation prediction
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DOI：
10.1016/j.jelekin.2013.02.008
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发表时间：
2013-08-01
影响因子：
2.5
通讯作者：
Gutierrez-Farewik, Elena M.
中科院分区：
文献类型：
--
作者：
Kosterina, Natalia;Wang, Ruoli;Gutierrez-Farewik, Elena M.
本文介绍了骨骼肌模型中的历史依赖效应，该模型可用于肌肉骨骼系统运动的动态模拟。由主动肌肉缩短和延长引起的力抑制和力增强分别代表肌肉历史效应。肌肉模型依赖于先前的收缩事件以及当前的参数开发的OpenSim软件，并应用于站立脚跟抬起和蹲下运动的模拟。肌肉激活计算使用关节运动学和地面反作用力记录从7个人的动作捕捉。在肌肉驱动的模拟中，对计算的激活进行了修改，并与测得的肌电图数据进行了比较。对于所研究的运动，历史给肌肉力量轨迹带来了一个小但可见的影响，但在分析确切的幅度之前，必须确定一些参数值。肌肉模型的修改改进了现有的肌肉模型，并给出了一个更准确的描述肌肉骨骼系统运动模拟的基础力量和激活。(C)2013爱思唯尔有限公司保留所有权利。
This article introduces history-dependent effects in a skeletal muscle model applied to dynamic simulations of musculoskeletal system motion. Force depression and force enhancement induced by active muscle shortening and lengthening, respectively, represent muscle history effects. A muscle model depending on the preceding contractile events together with the current parameters was developed for OpenSim software, and applied in simulations of standing heel-raise and squat movements. Muscle activations were computed using joint kinematics and ground reaction forces recorded from the motion capture of seven individuals. In the muscle-actuated simulations, a modification was applied to the computed activation, and was compared to the measured electromyography data. For the studied movements, the history gives a small but visible effect to the muscular force trace, but some parameter values must be identified before the exact magnitude can be analysed. The muscle model modification improves the existing muscle models and gives a more accurate description of underlying forces and activations in musculoskeletal system movement simulations. (C) 2013 Elsevier Ltd. All rights reserved.