J Orthop Sports Phys Ther. 1990;11(8):362-6. doi: 10.2519/jospt.1990.11.8.362.
The purpose of this study was to examine the effect of two measurement protocols on the reliability of peak isokinetic knee extensor and flexor torques performed at 60 degrees /sec. Isokinetic knee extensor and flexor torques were measured using two test protocols on 16 subjects. The two reciprocal testing protocols consisted of five trials performed with either no rest or a 30-sec rest between trials. Each subject performed both protocols with the order of protocol administration balanced across subjects. The results indicated that the Rest protocol produced average torques which were 5% greater than the No Rest protocol and that higher reliability coefficients were obtained for the Rest protocol. These findings are likely due to a significant linear trend across trials evident with the No Rest protocol. It was also demonstrated that the measurement error calculated for the average of five trials was less than that of a single trial. These findings strongly suggest that a greater measurement precision can be achieved by averaging trials obtained using a rest protocol. J Orthop Sports Phys Ther 1990;11(8):362-366.
本研究旨在探讨两种测量方案对 60 度/秒等速膝关节伸肌和屈肌峰值力矩可靠性的影响。16 名受试者分别采用两种测试方案测量等速膝关节伸肌和屈肌力矩。两种互逆测试方案均包括 5 次测试，其中一些方案在测试之间没有休息，而另一些方案则有 30 秒的休息时间。每个受试者均以受试者内平衡的方案实施顺序完成两种方案。结果表明，休息方案产生的平均力矩比无休息方案高 5%，并且休息方案的可靠性系数更高。这些发现可能归因于无休息方案中明显的线性趋势。研究还表明，计算五次试验平均值的测量误差小于单次试验的测量误差。这些发现强烈表明，通过对使用休息方案获得的试验进行平均，可以实现更高的测量精度。《矫形与运动物理治疗杂志》1990 年；11（8）：362-366.
