Bishop D
Department of Human Movement Studies, University of Queensland, Brisbane, Australia.
Med Sci Sports Exerc. 1997 Apr;29(4):554-9. doi: 10.1097/00005768-199704000-00019.
Endurance performance is a common criterion used to evaluate training or dietary interventions. However, to accurately appraise the effects of an intervention, the endurance performance measure must be reliable. The purpose of the investigation was to establish the reliability of a 1-h endurance performance test. Twenty trained female subjects (peak VO2 = 47.4 +/- 7.2 ml.kg-1.min-1) completed two trials in which they had to generate the highest power output possible throughout 60 min of cycling. Heart rates (HR) and ratings of perceived exertion (RPE) were also recorded during these two trials. All tests were conducted on a wind-braked cycle ergometer set up to closely resemble the subject's own cycle. The trials were separated by 1 wk, conducted on the same day of the week, and completed at a similar time of the day. The average power outputs (+/-SD) for the two trials were 180.0 (+/-18.1) W and 180.0 (+/-20.6) W. The results revealed that average absolute power output, HR, and RPE were not significantly different between trials. The intraclass correlation coefficient (one way ANOVA) for average absolute power output was 0.97, the coefficient of variation was 2.7%, and the SEM was 3.4 W. These results suggest that under controlled conditions average absolute power output during a 1-h endurance test is a reliable measure for trained female cyclists.
耐力表现是用于评估训练或饮食干预的一个常用标准。然而，为了准确评估一项干预措施的效果，耐力表现测量必须可靠。本研究的目的是确定1小时耐力表现测试的可靠性。20名受过训练的女性受试者（峰值摄氧量=47.4±7.2毫升·千克⁻¹·分钟⁻¹）完成了两项试验，在试验中她们必须在60分钟的骑行过程中尽可能产生最高功率输出。在这两项试验中还记录了心率（HR）和主观用力感觉等级（RPE）。所有测试均在一台设置为与受试者自己的自行车非常相似的风阻自行车测力计上进行。两次试验间隔1周，在一周中的同一天进行，并在一天中的相似时间完成。两次试验的平均功率输出（±标准差）分别为180.0（±18.1）瓦和180.0（±20.6）瓦。结果显示，两次试验之间的平均绝对功率输出、心率和主观用力感觉等级没有显著差异。平均绝对功率输出的组内相关系数（单因素方差分析）为0.97，变异系数为2.7%，标准误为3.4瓦。这些结果表明，在受控条件下，1小时耐力测试期间的平均绝对功率输出对于受过训练的女性自行车运动员来说是一项可靠的测量指标。
