Functional muscle group- and sex-specific parameters for a three-compartment controller muscle fatigue model applied to isometric contractions
Functional muscle group- and sex-specific parameters for a three-compartment controller muscle fatigue model applied to isometric contractions
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应用于等长收缩的三室控制器肌肉疲劳模型的功能性肌群和性别特定参数
DOI：
10.1016/j.jbiomech.2021.110695
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发表时间：
2021
影响因子：
2.4
通讯作者：
Yang, James
中科院分区：
文献类型：
--
作者：
Rakshit, Ritwik;Xiang, Yujiang;Yang, James
具有增强恢复（3CC-r）肌肉疲劳模型的三室控制器先前已使用不同的目标函数分别对持续（SIC）和间歇等距收缩（IIC）进行了验证，但其性能尚未同时使用共同的目标函数对两种收缩类型进行测试。此外，先前的验证已经在关节水平上使用共同参数进行，而在许多现实世界任务中的应用将需要将该模型应用于激动和协同肌群。最后，该模型的参数先前是为混合性别队列导出的，没有考虑性别之间的疲劳差异。在这项工作中，我们使用一个综合的等距收缩数据库来验证3CC-r模型，该数据库来自172份按功能肌群（FMG）和性别划分的出版物。我们发现，仅用FMG分离数据集时，预测误差平均降低了19%，同时用性别和FMG分离数据集时，预测误差平均降低了34%。然而，使用扭矩下降作为结果变量，同时使用SIC和IIC数据进行验证时，发现最小的预测误差比依次使用假设的SIC强度-耐力时间曲线（以耐力时间为结果变量）和原始IIC数据（以扭矩下降为结果变量）进行验证时要高。
The three-compartment controller with enhanced recovery (3CC-r) model of muscle fatigue has previously been validated separately for both sustained (SIC) and intermittent isometric contractions (IIC) using different objective functions, but its performance has not yet been tested against both contraction types simultaneously using a common objective function. Additionally, prior validation has been performed using common parameters at the joint level, whereas applications to many real-world tasks will require the model to be applied to agonistic and synergistic muscle groups. Lastly, parameters for the model have previously been derived for a mixed-sex cohort not considering the differece in fatigabilities between the sexes. In this work we validate the 3CC-r model using a comprehensive isometric contraction database drawn from 172 publications segregated by functional muscle group (FMG) and sex. We find that prediction errors are reduced by 19% on average when segregating the dataset by FMG alone, and by 34% when segregating by both sex and FMG. However, minimum prediction errors are found to be higher when validated against both SIC and IIC data together using torque decline as the outcome variable than when validated sequentially against hypothesized SIC intensity-endurance time curves with endurance time as the outcome variable and against raw IIC data with torque decline as the outcome variable.