J Orthop Sports Phys Ther. 1987;9(3):86-93. doi: 10.2519/jospt.1987.9.2.86.
This study investigated the effect of visual feedback on peak torque, relative endurance, time rate of tension development, and submaximal contractions attempted at 50% of maximum peak torque of the quadriceps and hamstring muscle groups. The dominant knee of 18 males and 18 females, between the ages of 20 and 33, completed the two test sessions, 1 week apart, using an isokinetic dynamometer at 60 degrees /sec and 180 degrees /sec. Visual feedback, consisting of a video display of the chart recorder, was provided during one of these sessions, determined at random. With feedback, peak torque at both speeds was significantly greater in both muscle groups. Time rate of tension development at 60 degrees /sec for the quadricep also increased significantly. No differences were found in submaximal contractions at 60 O/sec and relative endurance at 180 degrees /set. J Orthop Sports Phys Ther 1987;9(2):86-93.
本研究调查了视觉反馈对峰值扭矩、相对耐力、张力发展的时间率以及尝试达到最大峰值扭矩 50%的股四头肌和腘绳肌的亚最大收缩的影响。18 名男性和 18 名女性的优势膝关节，年龄在 20 至 33 岁之间，在相隔一周的两次测试中使用 60 度/秒和 180 度/秒的等速测力计完成。在其中一次测试中随机确定提供了视觉反馈，包括图表记录器的视频显示。有反馈时，两个速度下的峰值扭矩在两个肌肉群中都显著增加。60 度/秒时股四头肌的张力发展时间率也显著增加。在 60 O/sec 时的亚最大收缩和在 180 度/sec 时的相对耐力没有差异。J Orthop Sports Phys Ther 1987;9(2):86-93.
