Lesmes G R, Costill D L, Coyle E F, Fink W J
Med Sci Sports. 1978 Winter;10(4):266-9.
This study investigated the effects of short duration, high intensity training on skeletal muscle. The extensors and flexors of the knee were tested and exercised by means of an isokinetic dynamometer. Measurements of peak torque were obtained at velocities ranging from 0 degrees/sec (isometric) to 300 degrees/sec through a distance of 90 degrees. Total work output was measured during repeated knee extensions and flexions for work tasks of 6 sec and 30 sec duration. A 1-min test of repeated maximal contractions was administered to examine muscular fatiguability before and after training. The subjects trained one leg with repeated 6 sec exercise bouts, while the other leg was trained using repeated 30 sec bouts. All training and testing was executed at near maximal force and at a constant velocity (180 degrees/sec). The subjects trained four times per week for a period of seven weeks. The daily work output was equal for the 6 and 30 sec training legs. Results indicate that: (1) isokinetic training programs of 6 and 30 seconds duration can significantly (P less than .05) increase peak muscular torque; (2) training velocity may be an important consideration in improving peak torque; (3) total work output was increased an average of 30% with either training at relatively slow (60 degrees/sec) or fast (180 degrees/sec) velocities; (4) both training programs significantly reduced the fatiguability of the knee extensor muscles.
本研究调查了短时间高强度训练对骨骼肌的影响。通过等速测力计对膝关节的伸肌和屈肌进行测试与锻炼。在从0度/秒（等长收缩）到300度/秒的速度范围内，通过90度的行程获取峰值扭矩测量值。在持续6秒和30秒的膝关节反复伸展和屈曲工作任务期间测量总功输出。进行一次1分钟的反复最大收缩测试，以检查训练前后的肌肉疲劳性。受试者一条腿进行重复6秒的锻炼回合训练，而另一条腿进行重复30秒的锻炼回合训练。所有训练和测试均在接近最大力量和恒定速度（180度/秒）下进行。受试者每周训练四次，为期七周。6秒和30秒训练腿的每日功输出相等。结果表明：（1）持续6秒和30秒的等速训练方案可显著（P小于0.05）增加肌肉峰值扭矩；（2）训练速度可能是提高峰值扭矩的一个重要考虑因素；（3）以相对较慢（60度/秒）或较快（180度/秒）的速度进行训练，总功输出平均增加30%；（4）两种训练方案均显著降低了膝关节伸肌的疲劳性。
