EMG and motion analysis of sitting up activity and applying FES.

从仰卧到坐的能力对身体独立很重要。我们一直在研究使用功能性电刺激（FES）来恢复运动功能。坐起活动的重建是FES的难题之一。本研究的第一个目的是阐明健康受试者在坐起时的肌肉活动和运动模式。二是探索利用FFS重建坐姿的可能性。我们专注于一种坐起来的模式，即从仰卧到长时间坐着，通过右肘位。8名年轻男性志愿者参加了这项研究。我们使用表面电极同时研究了18块肌肉，包括颈部、躯干和上肢肌肉。使用运动分析仪测量运动学数据以确定坐起时的运动模式。从运动分析仪和肌电图的数据可以看出，坐起的运动模式可以分为三个阶段。第一个阶段是从起始位置到右肩带从支撑面抬起。第二阶段为肘部位，第三阶段为长坐位。在第一阶段开始时，双侧胸锁乳突肌的活动先于其他肌肉进行头部屈曲和旋转。两种腹直肌活动逐渐增加，在第二阶段早期达到高峰。第二期躯干向右侧屈曲、旋转时，左侧斜外肌活动高于右侧。在第一阶段，左前锯肌比右前锯肌作用更早、更高，使左肩带从支撑面上抬。为了恢复偏瘫患者的坐起活动，麻痹侧的前锯肌似乎是重要的肌肉。然而，从对健康受试者前锯肌电刺激的尝试结果来看，有效的前锯肌电刺激需要解决电极的位置、电极的大小、刺激强度等几个问题。少

The ability to sit up from supine to sitting position is important for physical independence. We have been studying to restore motor function using the functional electrical stimulation (FES). The reconstruction of sitting up activity is one of the difficult issues for the FES.The first purpose of this study was to clarify the muscle activity and movement pattern during the sitting up in the healthy subjects. The second was to search a possibility to reconstruct sitting up by means of FFS.We focused on a sitting up pattern that was to get up from supine to long sitting through the right on elbow position. Eight young male volunteers were participated in this study. We have investigated 18 muscles that were neck, trunk and upper extremity muscles simultaneously using surface electrodes. Kinematics data was measured using motion analyzers to determine movement pattern during sitting up.From the data of motion analyzer and EMG, the movement pattern for sitting up could be divided into thr … More ee phases. The first phase was from the starting position to when the right shoulder girdle lifted up from the support surface. The second phase was to the point of on elbow position, and then the third phase was until the long sitting position. The activities of both sternocleidomastoideus muscles were preceded other muscles in the beginning of the first phase to flex and rotate the head. The both rectus abdominis activities were gradually increased and were peaked at early second phase. The activity of left obliquus externus was higher than right side in the second phase to flex and rotate trunk toward right side. The left serratus anterior was acted earlier and higher than the right side in the first phase to protract the left shoulder girdle to lift up from support surface.To restore sitting up activity in patients with hemiplegia, the serratus anterior muscle in paralyzed side was seemed to be important muscle. However, from the results of attempt to electrical stimulation for the serratus anterior in health subjects, effective electrical stimulation for the serratus anterior needed to solve several issues such as location of electrodes, size of electrodes, stimulation intensity and so on. Less