In muscle rehabilitation and training, it is important to evaluate a patient's muscle state. In general, training is based on physical therapy, but there has not been quantitative assessment of the actual effects on muscles. The authors previously tried to quantify muscle fatigue and defined “Muscle‐fatigue time (MFT)” as the quantitative evaluation index of muscle fatigue based on electromyography and the use ratio of the muscle fiber type. MFT is the time when the use ratio of the slow muscle fiber (Type I) and the fast muscle fiber (Type IIb) intersects. Furthermore, the authors also proposed a method to estimate MFT by modeling the relationship between each muscle load and MFT. This paper examines the appropriate evaluation method for MFT containing variation, and generalization performance of the constructed model.

中文翻译：

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基于肌纤维类型的肌电图肌肉疲劳估计模型

在肌肉康复和训练中，评估患者的肌肉状态很重要。通常，训练是基于物理疗法，但尚未对肌肉的实际效果进行定量评估。作者先前曾尝试量化肌肉疲劳，并将“肌肉疲劳时间（MFT）”定义为基于肌电图和肌纤维类型使用率的肌肉疲劳定量评估指标。MFT是慢肌纤维（I型）和快肌纤维（IIb型）的使用率相交的时间。此外，作者还提出了一种通过对每个肌肉负荷与MFT之间的关系进行建模来估计MFT的方法。本文研究了包含变异的MFT的适当评估方法，以及所构建模型的泛化性能。