正常人之膝伸肌與屈肌群之肌力研究

The study related to muscle power of knee extensor and flexor in normal people

鐘進燈(Chinn-Dong Chung) ； 周崇頌(Chorng-Song Chou) ； 徐道昌(Tao-Chang Hsu)

《中華民國復健醫學會雜誌》 22卷2期 (1994/12) Pp. 1-5

摘要

本研究之目的在建立正常人之膝伸張肌群和屈曲肌群力量之數值，熟練操作程序以供日後檢測參考。利用本科同仁及實習生50名為對象，以LIDOACT等速度運動測力機，依四種不同角速度檢測，結果顯示正常人之膝伸屈肌力差異很大，右側較左側較大。男性較女性大。角速度月大、所測肌力愈小，速度愈小則愈大。角速度愈快膝伸與屈肌力之比愈小，在角速度每秒60度下、伸屈肌荔枝比約為2比1。角速度愈快膝伸與屈肌力之比愈小，在角速度60度下、每磅體重膝申肌立約0.8至1.0呎磅，膝屈肌力約0.4至0.5呎磅。

關鍵字

等速運動 ； 力矩

並列摘要

Isokinetic exercise is performed at a constant speed throughout the range of motion. As the muscle is appiied by force, it encounters a proportional opposing resistance so as to keep the speed of movement eonslanl. Where the muscle is tronger, the resistance increases. The distinct advantage of isokinetic exercise is that it permits the muscle work fully throughout its range of motion.There are many advantages for isokinetic test. They inciude safty, efficiency, accomodating resistance, accuracy and reliability of test data, permanent objective recording and accomodaiion to pain.
Thirty gentlemen and twenty ladies arc tested by LIDOACT in our study. The purposes of this study are to master the procedure and to set up the normai data of knee extensor and flexor in normal people. There arc many factors affecting the results-They include warm up, positioning, body fixation,hand grasp and motivation. We can dectect the error from the fatigue index and coefficient variation.The test shou@ restart if the fatigue index is over 100% and the coefficient variation is over 10%. The results of data greatly vary with subjects. The gentleman is stronger than the lady. The right side is stronger than the left side. When the speed increases, the muscle power decreases. The ratio of knee extensor to flexor is about 2 to 1, muscie power to body weight is about 0.8 to 1.0 ft-lb at extensor 0.4 to 0.5 at flexor per pound in the speed of 60 degree per second.

並列關鍵字

isokinetic exercisre ； torque