The measurement and application of the relationship between elbow angle and torque

• Main Authors: Lai, Ping-Chang, 賴平常
• Other Authors: Shiang, Tzyy-Yuang
• Format: Others
• Language: zh-TW
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/91386461594769908269

碩士 === 國立體育學院 === 教練研究所 === 87 === As we know, the elbow joint torque is correlated with joint angle in some way. In order to understand the relationship between elbow angle and torque, we designed a joint tensiometer to measure elbow angle and torque. After a series testing, we found that the accuracy, linear regression and repeatability of the joint tensiometer are performed well . But the validity was not consistent when compared with the Kin-Com 500H. Fifty one healthy subjects performed maximal voluntary elbow flexion and extension on the joint tensiometer. In the elbow flexion, the maximal torque produced was at the 110-degree elbow angle. Before 110-degree the more elbow angle increase, the more torque increase. After 110-degree, the more elbow angle increased, the less torque was produced. In the elbow extension, the maximal torque produced was at the 30-degree of elbow angle. The more elbow angle increased, the less torque was produced. At last, we designed a cam to change load over the range of motion to match the angle-torque relationship of muscle and checked the shape of the cam by computer simulation to ensure that it is consistent with the angle-torque relationship.