@article{oai:soar-ir.repo.nii.ac.jp:00006979, author = {木村, 貞治 and 藤原, 孝之}, issue = {2}, journal = {紀要. 2, 自然・医療技術系}, month = {Feb}, note = {The purpose of this study is to built quantitative and qualitative analysis system for muscle tonus by passive stretch which is used in clinically. The passive stretch at 150 and 200 degree per second generated by torque motor was added to the Biceps Brachii in thirteen healthy subjects and the electromyographic (EMG) response, torque, angular displacement and angular velocity were evaluated at both the resting and voluntary isometric contractive state with 10% or 20% of maximal voluntary contraction (MVC). The results obtained were : 1) EMG response was not observed without any voluntary efforts of biceps muscle. 2) In volutary contraction, although decrease of EMG burst of Biceps Brachii was observed at 350msec before stretch, it was considered to be caused by unexpected previous mechanical sound of torque motor. 3) We could find three segmental components of EMG burst at the latencies of 10-30ms, 40-55ms, and 60-90ms only when the passive stretch was enforced in the condition of 20% MVC and 150 degree per second. 4) Though EMG burst of Triceps Brachii was observed at the same period of mechanical interruption of torque motor, it was supposed that reflective muscle contraction of Triceps Brachii was induced by abrupt interruption of inertial stretch. Generally, EMG response at the latency of 40-90ms by passive stretch is called long latency reflex, long loop reflex, spino-bulbo-spinal reflex (SBS) and trans-cortical reflex. However, physiological mechanisms of the above mentioned segmental EMG components are not determined by these latencies in this experiment., Article, 紀要 14(2): 115-122(1989)}, pages = {115--122}, title = {筋緊張解析システムの試作}, volume = {14}, year = {1989} }