摘要：This research aimed to find out the relationship between transition of angular velocity and isokinetic trunk strength. Forty-three normal subjects(24 males and 19 females) were tested on the Cybex Trunk Extension-Flexion. We used 5 kinds of determination velocity; 30, 60, 90, 120, 150 deg/sec.and investigated the percentage of peak torque value against body weight (%BW), the ratio of extensors to flexors of trunks, and the peak angle (the angle which showed the peak torque). As a result, decline of %BW according to an increase of angular velocity was evident in extensors while the ratio Ext/Flex decreased. The peak angle of the extensors' group, decreasing in accordance with the increase of angular velocity, transited to an extension position. The peak angle of the flexors' group remained almost the same in spite of transition of angular velocity. The influence of transition of angular velocity in an isokinetic movement was evident in the trunk extensors' group.
