论文部分内容阅读
借助Ｋｉｎ－ｃｏｎ等速装置，以６０°／ｓ、１８０°／ｓ两种角速度对３０名男性、３０名女性的髋关节屈曲、伸展力量进行测定，获得了相应的向心收缩、离心收缩力矩峰值。对不同角速度下力矩值、拮抗肌比、向心收缩／离心收缩比、峰值／均值比、同名肌群缺失百分比等有关比值及性别间力量改变情况进行比较分析，结果表明，伴随角速度增大，一般表现为向心收缩力矩值降低，离心收缩力距值增高，并可出现显著性差异。可能的原因为收缩机制、中枢神经的抑制作用，介入运动的肌纤维类型及受试者平素运动水平等因素。由此使得拮抗肌比、向心收缩／离心收缩比、峰值／均值比等有关比值也相应变化。左右侧同名肌群力矩缺失百分比随角速度增大而降低，原有的左右侧同名肌群间显著性差异消失。不同角速度下性别间差异的改变在一定程度上表明了运动水平在性别差异中所占有的角色。
With the aid of Kin-con constant velocity device, the flexion and extension forces of 30 male and 30 female hip joints were measured at 60 ° / s and 180 ° / s angular velocities, and the corresponding centripetal contractions and centripetal shrinkage moments Peak. The torque ratio, antagonistic muscle ratio, centripetal contraction / eccentric contraction ratio, peak / mean ratio, the percentage of muscle loss with the same name, and the change of power between different sexes were compared and analyzed. The results showed that with the increase of angular velocity, The general performance of the centripetal contractile torque decreased, the value of eccentric contraction increased, and there may be significant differences. Possible reasons for the mechanism of contraction, central nervous system inhibition, the type of muscle fibers involved in exercise and subjects usually level of exercise and other factors. As a result, the relative ratio of antagonistic muscle to centripetal / eccentric contraction ratio, peak / mean ratio and the like also changes accordingly. Left and right side of the same name the muscle torque loss percentage decreases with the increase of the angular velocity, the original left and right side of the same name muscle differences disappeared significantly. The changes in gender differences at different angular velocities indicate to a certain extent the role of exercise level in gender differences.