等动向心离心训练对膝关节屈伸力矩影响研究

Research on Knee Torque Development under the Concentric and Eccentric Isokinetic Training

将38名女性被试随机分组进行等动向心和离心训练,通过对被试进行等动向心和离心训练,对被试的膝关节的屈伸力矩和力矩的增长率进行分析评价。训练内容包括对被试的非优势腿的膝关节的伸膝肌群和屈膝肌群进行为期20周,每周三次的等动向心和离心训练(SD=1),研究结果发现离心训练组被试伸膝肌群和屈膝肌群的峰力矩的增长幅度远大于向心训练组。与向心训练组相比,离心训练组缩短了力矩加速期以及达到峰力矩的时间。在对被试进行的20周的训练过程中,与向心训练相比,慢速等动离心训练能更有效的提高离心收缩时的力矩,而在完成向心收缩时力矩的增长情况与向心训练组相似。

This study assesses muscular torque and rate of torque development following concentric or eccentric isokinetic training, thirty-eight women are randomly assigned to either CON or ECC training groups. Training consisted of knee extension and flexion of the non-dominant leg three times per week for 20 weeks. Eccentric training increased ECC knee extension and flexion peak torque more than CON training . The ECC group improves acceleration time to peak torque with ECC movements versus the CON group. Slow-velocity ECC isokinetic training yielded to greater ECC and similar CON torque development gains versus CON training over the course of 20 weeks among young women.