兔骨胳肌肌力与电刺激强度的相关性研究  

Experimental Study on the Correlation between the Skeletal Muscle Tension and the Intensity of Electric Stimulus in Rabbits

作　　者：王柯慧[1] 钟红刚[1] 李文荣[1] 程爱华[1] 

机构地区：[1]中国中医研究院骨伤科研究所,北京100700

出　　处：《中国骨伤》1998年第3期17-19,共3页China Journal of Orthopaedics and Traumatology

基　　金：国家自然科学基金

摘　　要：目的为得到电刺激强度与骨胳肌肌力之间的关系。方法 应用扣带式肌力传感器及电生理仪对１２只兔小腿三头肌肌张力进行测定。结果在３～１０ｍＡ的电流强度范围内，肌力随刺激方波波宽的增加而加大，１０ｍＡ，２ｍｓ时为最大（１．７５７±２．１６５ｋｇ）；刺激量为３～５０Ｖ电压范围内，肌力大小同样依赖于波宽宽度，波宽２ｍｓ时达最大（１．７５０±０．８０８ｋｇ）。结论为得到某肌张力应在有效的范围内选择电刺激参数。非负重状态免三头肌最大肌张力近似于其本身体重。Aim To obtain the relationship between skeletal muscle tension and intensity of electric stimulus. Methods The muscle tension of triceps of shank in 12 rabbits was determined with belt buckle ten- sile transducer and electric physiological instrument. Results As the range of the current intensity was in 3～ 10mA, the muscle tension was increased along with the increase of the square wave duration and the maxi- mum of muscle tension (l. 757±0. 2165kg) was at 10mA and 2ms. As the amount of stimulus in the range of 3～50V, the muscle tension was also dependent upon the wave duration and its maximum (1. 750± 0. 808kg)at 2ms. Conclusion It is suggested that the electric stimulus parameter in the range of effective electric pulse stimulation should be selected for obtaining a muscle tension. The maximal muscle tension of rabbit's triceps at non-loading condition is similar to its body weight.

关 键 词：骨骼肌 肌张力 电刺激 

分 类 号：R337.5[医药卫生—人体生理学]