Ihara H, Nakayama A
Am J Sports Med. 1986 Jul-Aug;14(4):309-15. doi: 10.1177/036354658601400412.
The purpose of this study was to introduce dynamic joint control training and to assess its effects in improving neuromuscular coordination of injured knees using the Kin-Com Isokinetic Dynamometer. Although four patients had a sensation of "giving way" on one knee, all eight knees were trained for 3 months using unstable boards with added sudden force given by a therapist. The training group (four patients) was examined during four sessions and the control group (five subjects) was examined during three sessions within a 3 month period. All subjects were instructed to react to the sudden forward movement of the input arm of the Kin-Com Isokinetic Dynamometer with contraction of the hamstring. Results of the first and final trials of peak torque time (PTT) and rising torque value (RTV) of the hamstring between the training and control groups showed significant improvement. There was no correlation between isometric muscle strength (IMS) and PTT in the total 76 sessions. There is a strong implication that simple muscle training does not increase the speed of muscular reaction but dynamic joint control training has the potential to shorten the time lag of muscular reaction.
本研究的目的是引入动态关节控制训练，并使用Kin-Com等速测力计评估其对改善受伤膝盖神经肌肉协调性的效果。尽管有4名患者单膝有“打软腿”的感觉，但所有8个膝盖均使用不稳定板进行了3个月的训练，训练过程中治疗师会施加额外的突然力量。训练组（4名患者）在3个月内进行了4次检查，对照组（5名受试者）进行了3次检查。所有受试者均被要求在Kin-Com等速测力计输入臂突然向前移动时，通过收缩腘绳肌做出反应。训练组和对照组之间，腘绳肌的峰值扭矩时间（PTT）和扭矩上升值（RTV）的首次和最终试验结果显示有显著改善。在总共76次检查中，等长肌力（IMS）与PTT之间没有相关性。这强烈暗示，简单的肌肉训练不会提高肌肉反应速度，但动态关节控制训练有可能缩短肌肉反应的时间滞后。
