Stamford B A, Rowland R, Moffatt R J
J Appl Physiol Respir Environ Exerc Physiol. 1978 Apr;44(4):559-63. doi: 10.1152/jappl.1978.44.4.559.
Five moderately fit males (50.8 ml.kg-1.min-1) performed 14 continuous type VO2 max tests on a motor-driven treadmill. Randomly assigned experimental sessions, consisting of three tests each and separated by 10 (tests 1, 2, 3), 20 (tests 4, 5, 6), 30 (tests 7, 8, 9), or 40 (tests 10, 11, 12) min, were conducted at a consistent hour for each subject every 4th day. Two separately performed tests were also included in the random assignment with the test eliciting the highest VO2 max value designated as the standard reference (SR). VO2 max values for tests 1 through 12 were not significantly different from the SR in spite of elevated pretest blood lactate concentrations ranging from 5 mM to 16 mM. Performance time was reduced for all tests other than tests 1, 4, 7, and 10, reaching the level of statistical significance (P less than 0.05) in tests 2, 3, 5, 6, and 9. It was concluded that valid and reliable assessment of VO2 max is possible even though testing is initiated with subjects in varying stages of exhaustion.
五名中等健康水平的男性（最大摄氧量为50.8毫升·千克⁻¹·分钟⁻¹）在电动跑步机上进行了14次连续的最大摄氧量测试。实验环节随机分配，每个环节包含三次测试，测试之间间隔10分钟（测试1、2、3）、20分钟（测试4、5、6）、30分钟（测试7、8、9）或40分钟（测试10、11、12），每四天在同一时间对每个受试者进行一次。随机分配中还包括两次单独进行的测试，将得出最高最大摄氧量值的测试指定为标准参考（SR）。尽管测试前血乳酸浓度从5毫摩尔升至16毫摩尔，但测试1至12的最大摄氧量值与标准参考值并无显著差异。除测试1、4、7和10外，所有测试的运动时间均减少，在测试2、3、5、6和9中达到统计学显著性水平（P小于0.05）。研究得出结论，即使在受试者处于不同疲劳阶段时开始测试，也能够对最大摄氧量进行有效且可靠的评估。
