Tool for Modeling Coactivation Muscle Patterns (MCoMP)

Determining muscle activations required to "brace for impacts" requires optimization techniques that employ objective functions other than what are commonly used in OpenSim (such as in So and CMC). Here we present a tool (MCoMP) in the form of MATLAB script that allows for comparison of different objective functions that intentionally result in coactivation of muscles. MCoMP accepts as inputs an OpenSim model, joints to be stiffened through coactivation, and loading parameters of a force to be resisted. MCoMP outputs forward simulations that utilize muscle activations obtained through objective functions from previous literature and an objective function that we developed. This builds on our previous work (Mortensen, J., et al., 2018. Exploring novel objective functions for simulating muscle coactivation in the neck. Journal of Biomechanics), and will be made available here, pending approval of a manuscript currently in development. <br/><br/>This project includes the following software/data packages: <br/> <ul> <li> <a href="https://simtk.org/frs?group_id=1608#pack_2089">MCoMP </a> : The manuscript associated with this tool is under review. Therefore, this tool is subject to significant revision and a final version will be published upon manuscript acceptance. This package includes all the MATLAB script necessary for MCoMP and an example file that closely follows our manuscript: TOOL FOR MODELING COACTIVATION MUSCLE PATTERNS IN OPENSIM (MCOMP). </li> </ul>

确定用于“准备承受冲击”的肌肉激活所需条件，需采用不同于OpenSim（如So和CMC中常用的）目标函数的优化技术。在此，我们推出一款名为MCoMP的MATLAB脚本工具，旨在对不同目标函数进行比较，这些目标函数旨在故意导致肌肉的协同激活。MCoMP接受OpenSim模型、通过协同激活需加固的关节以及需抵抗的力的加载参数作为输入。MCoMP输出正向模拟，该模拟利用了从前人文献中获取以及我们自主研发的目标函数得到的肌肉激活。此研究建立在我们的前期工作（Mortensen, J., 等人，2018. 探索模拟颈部肌肉协同激活的新目标函数。生物力学杂志）基础之上，并将在此处发布，待相关稿件开发完成并获得批准后。

本项研究涉及以下软件/数据包：

<ul>
<li><a href="https://simtk.org/frs?group_id=1608#pack_2089">MCoMP</a>：与该工具相关的稿件正在审阅中。因此，此工具将经历重大修订，并在稿件被接受后发布最终版本。此包包含MCoMP所需的全部MATLAB脚本以及一个与我们稿件内容紧密相关的示例文件：在OpenSim中建模协同激活肌肉模式的工具（MCOMP）。</li>
</ul>