Okamura Naomi, Kobayashi Yo, Sugano Shigeki, Fujie Masakatsu G
IEEE Int Conf Rehabil Robot. 2017 Jul;2017:1686-1691. doi: 10.1109/ICORR.2017.8009490.
Static stretching is widely performed to decrease muscle tone as a part of rehabilitation protocols. Finding out the optimal duration of static stretching is important to minimize the time required for rehabilitation therapy and it would be helpful for maintaining the patient's motivation towards daily rehabilitation tasks. Several studies have been conducted for the evaluation of static stretching; however, the recommended duration of static stretching varies widely between 15-30 s in general, because the traditional methods for the assessment of muscle tone do not monitor the continuous change in the target muscle's state. We have developed a method to monitor the viscoelasticity of one muscle continuously during static stretching, using a wearable indentation tester. In this study, we investigated a suitable signal processing method to detect the time required to change the muscle tone, utilizing the data collected using a wearable indentation tester. By calculating a viscoelastic index with a certain time window, we confirmed that the stretching duration required to bring about a decrease in muscle tone could be obtained with an accuracy in the order of 1 s.
作为康复方案的一部分，静态拉伸被广泛用于降低肌张力。确定静态拉伸的最佳持续时间对于缩短康复治疗所需时间很重要，这也有助于维持患者对日常康复任务的积极性。已经开展了多项研究来评估静态拉伸；然而，一般来说，静态拉伸的推荐持续时间在15 - 30秒之间差异很大，因为传统的肌张力评估方法无法监测目标肌肉状态的持续变化。我们开发了一种方法，使用可穿戴压痕测试仪在静态拉伸过程中连续监测一块肌肉的粘弹性。在本研究中，我们利用可穿戴压痕测试仪收集的数据，研究了一种合适的信号处理方法来检测改变肌张力所需的时间。通过在特定时间窗口计算粘弹性指数，我们证实可以以大约1秒的精度获得导致肌张力下降所需的拉伸持续时间。
