Department of Kinesiology, Kansas State University, Manhattan, KS, USA.
Respir Physiol Neurobiol. 2013 Jan 15;185(2):380-5. doi: 10.1016/j.resp.2012.08.024. Epub 2012 Sep 5.
A validated expeditious method is needed to determine critical speed (CS) and the finite distance that can be covered above CS (D'). We tested the hypothesis that a single all-out 3-min running test would accurately determine CS and D'. Seven healthy subjects completed three constant-speed runs on a treadmill for the determination of CS and D', as well as an all-out 3-min test on a track for the determination of end-test speed (ES) and the distance above end-test speed (DES). ES (13.4 ± 2.8 km h(-1)) was not significantly different from the speed-1/time model CS (13.3 ± 2.8 km h(-1)). While DES (141 ± 34 m) was not significantly different from D' (204 ± 103 m), it underestimated D' in 5 of 7 subjects. Thus, the speed-1/time model CS can be accurately determined using a single 3-min test, while caution should be used in relating DES to D'.
需要一种经过验证的快速方法来确定临界速度 (CS) 和可以超过 CS 的有限距离 (D')。我们检验了一个假设，即单次全力 3 分钟跑步测试可以准确确定 CS 和 D'。7 名健康受试者在跑步机上完成了 3 次恒速跑，以确定 CS 和 D'，以及在跑道上进行全力 3 分钟测试，以确定终点测试速度 (ES) 和终点测试速度以上的距离 (DES)。ES（13.4±2.8km h(-1)）与速度-时间模型 CS（13.3±2.8km h(-1)）没有显著差异。虽然 DES（141±34m）与 D'（204±103m）没有显著差异，但在 7 名受试者中有 5 名低估了 D'。因此，使用单次 3 分钟测试可以准确确定速度-时间模型 CS，但在将 DES 与 D'相关联时应谨慎。
