Relationship among joint angle, angular velocity, and torque in maximum voluntary contraction was investigated on joint movement. Elbow joint torque changes during maximum elbow flexion was determined in seven university male students using the isokinetic device (Cybex-II) in various angular velocities of motion including isometric contraction. The results are as follows; (1) Peak torque values in dynamic contractions relative to that of isometric condition decreased gradually with increased speed of motion, and were 80% (60 deg/s), 71% (120 deg/s), 67% (180 deg/s), 60% (240 deg/s), and 55% (300 deg/s). (2) Peak dynamic torque was reached at elbow joint angles in the range of 70-90 degrees, with a displacement toward smaller elbow angles with higher angular velocities. Using these results in this study, it appears that there is a good possibility of planning and making a new weight resistance training machine.

DESCENTE SPORTS SCIENCE Vol.9/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE