Harling Simon A, Tong Richard J, Mickleborough Timothy D
School of Sport, P.E. and Recreation, University of Wales Institute, Cardiff, Cyncoed Campus, Cardiff, UK.
Med Sci Sports Exerc. 2003 Apr;35(4):663-8. doi: 10.1249/01.MSS.0000058434.53664.EC.
Peak treadmill speed (V(max)), which is the final speed reached and sustained for a minute during a speed-incremented continuous maximal oxygen uptake ([OV0312]O(2max)) test, is an effective predictor of endurance performance. This study assesses the reliability of V(max) and [OV0312]O(2max), and examines the oxygen uptake response while running to exhaustion at V(max).
Eleven recreationally active runners completed two speed-incremented [OV0312]O(2max) tests (test 1 and test 2) to determine [OV0312]O(2max) and V(max). In addition, the subjects completed a constant speed test (test 3) at V(max) to determine time to exhaustion (T(max)).
No significant differences existed between test 1 and test 2 for [OV0312]O(2max) (P = 0.68) and V(max) (P = 0.10). Means (+/- SD) for [OV0312]O(2max) and V(max) were 51.1 +/- 5.8 mL.kg-1.min-1 and 17.4 +/- 1.3 km.h-1, respectively; 95% limits of agreement for V(max) were -0.1 +/- 1.4 km.h-1. However, as heteroscedasticity was present in the [OV0312]O(2max) test data, 95% ratio limits of agreement were reported (1.01 *// 1.08). During test 3, 6 of the 11 subjects attained an oxygen uptake equivalent to their previously recorded [OV0312]O(2max). The time to attain [OV0312]O(2max) was 155.0 +/- 48.0 s, which represented 66.5% of T(max) (237.0 +/- 35.0 s). Although 5 of the 11 subjects did not attain an oxygen uptake response equivalent to that previously recorded, no significant difference existed between the oxygen uptakes for the three tests (P = 0.52).
The results of this study indicate that V(max) and [OV0312]O(2max) attained during a speed incremented maximal oxygen uptake test were reliable. However, while running at V(max), not all the subjects attained an oxygen uptake response equivalent to that previously recorded during incremental tests 1 and 2.
在递增速度的连续最大摄氧量（[OV0312]O₂max）测试中，峰值跑步机速度（V(max)）是达到并持续一分钟的最终速度，是耐力表现的有效预测指标。本研究评估V(max)和[OV0312]O₂max的可靠性，并研究在以V(max)速度跑至力竭时的摄氧量反应。
11名有休闲运动习惯的跑步者完成了两次递增速度的[OV0312]O₂max测试（测试1和测试2）以确定[OV0312]O₂max和V(max)。此外，受试者在V(max)下完成了一次恒速测试（测试3）以确定力竭时间（T(max)）。
测试1和测试2在[OV0312]O₂max（P = 0.68）和V(max)（P = 0.10）方面无显著差异。[OV0312]O₂max和V(max)的平均值（±标准差）分别为51.1±5.8 mL·kg⁻¹·min⁻¹和17.4±1.3 km·h⁻¹；V(max)的95%一致性界限为-0.1±1.4 km·h⁻¹。然而，由于[OV0312]O₂max测试数据存在异方差性，报告了95%的比率一致性界限（1.01 *// 1.08）。在测试3期间，11名受试者中有6名达到了与他们之前记录的[OV0312]O₂max相当的摄氧量。达到[OV0312]O₂max的时间为155.0±48.0秒，占T(max)（237.0±35.0秒）的66.5%。虽然11名受试者中有5名未达到与之前记录相当的摄氧量反应，但三次测试的摄氧量之间无显著差异（P = 0.52）。
本研究结果表明，在递增速度的最大摄氧量测试中获得的V(max)和[OV0312]O₂max是可靠的。然而，在以V(max)速度跑步时，并非所有受试者都能达到与之前在递增测试1和2中记录的相当的摄氧量反应。
