Development and clinical application of trunk exercise assisting system for brain damaged patients

躯干运动功能障碍的康复对脑损伤患者的站立和行走至关重要。我们研制了一种新的“计算机躯干运动辅助系统”，利用该系统，我们能够反复检查或锻炼躯干肌肉力量和坐姿平衡，被检查者坐在一张椅子上，该椅子上装有一个重力仪，该重力仪与计算机系统相连，以自动跟踪压力中心（COP）的运动。座位被抬起来，直到脚离开地板。COP在受试者面前的显示屏上显示。在任务中，受试者被要求倾斜他的身体，以便他的COP尽可能快地从原位准确地到达六个指示目标。换句话说，该系统是通过视觉和深层感觉反馈控制来检查躯干肌控制功能。存储COP运动的数据，并分析COP运动范围、跟踪速度和每个方向的误差，在鹿儿岛大学附属医院雾岛康复中心的5名CVD患者中进行评估，并征得他们的知情同意。所得结果如下所示。该系统提供了躯干肌平衡的量化指标，可用于康复效果的评价.该装置还可用于视觉引导躯干肌肉平衡和力量的锻炼。非偏瘫侧COP最大侧向运动幅度大于偏瘫侧.经系统训练一周后，大部分患者COP运动范围趋于扩大，跟踪误差明显减小。

Rehabilitation of trunkal motor dysfunction is very important for standing and walking of brain damaged patients. We developed a new "Computerized-Trunk Exercise Assisting System" with which we are repeatedly able to examine or to exercise the trunkal muscle strength and the sitting balance.The examined subject sat on a chair which was equipped with a gravimeter connected to a computer system to track automatically the movements of Center of pressure (COP). The seat was lifted up until the foot was free from the floor. COP was presented on a display in front of the subject. In the task, the subject was asked to lean his body so that his COP arrived the six indicated targets accurately from a home position as fast as possible. This system, in other words, is the examination of the trunkal muscle control function through visual and deep sensorial feedback control. The data of the COP movements were stored and analyzed with respect to range of COP movement, tracking speed and error in each direction.The evaluation was performed in 5 patients with CVD at Kirishima rehabilitation center, Kagoshima University hospital after taking the informed consent of them. The obtained results were shown below.1. This system provides quantitative indices of trunkal muscle balance and is useful for the evaluation of the rehabilitation effects.2. The device can also be used for the exercise of the visually guided trunkal muscle balance and strength.3. The maximal range of lateral COP movement was larger in nonhemiplegic side than that in hemiplegic side.4. After training with system for a week, the range of COP movement tended to be larger and the tracking error was significantly reduced in most of the patients.