VO2 kinetics determined by PRBS techniques differentiate elite endurance runners from elite sprinters.
VO2 kinetics determined by PRBS techniques differentiate elite endurance runners from elite sprinters.
复制标题
PRBS 技术确定的摄氧量动力学将精英耐力跑运动员与精英短跑运动员区分开来。
DOI：
10.1055/s-2007-971082
复制
发表时间：
1999
影响因子：
2.5
通讯作者：
M. Fysh
中科院分区：
文献类型：
--
作者：
Andrew M. Edwards;N. Challis;J. Chapman;D. Claxton;M. Fysh
该研究的目的是通过伪随机二值序列（PRBS）运动方案，检验摄氧量（VO2）动力学测量是否可以区分12名优秀的男性耐力（3000- 10000米）运动员和12名优秀的男性短跑（100-400米）运动员。所有的运动测试都是在一个电动制动自行车测力仪上进行的，踏板频率恒定为1hz。PRBS运动强度在25瓦和85瓦之间交替进行，连续三个周期为300秒。每呼吸一次测量VO2，并在频域用傅里叶技术分析结果。在6.7 mHz频率（6.71 +/- 1.09和5.47 +/- 0.95 ml × min（-1） × W(-1)）和10 mHz频率（4.97 +/- 0.98和3.56 +/- 0.69 ml × min（-1） × W(-1)）下，耐力跑者的振幅成分显著高于短跑运动员，P<0.05。在3.3 mHz频率下，耐力跑运动员的相移分量显著小于短跑运动员（分别为-35.45 +/- 4.31度和-41.26 +/- 5.82度），P<0.05。这项研究的结果表明，VO2动力学在优秀的耐力运动员中比在优秀的短跑运动员中更快。这支持了PRBS技术作为运动表现测试的发展。
The aim of the study was to examine whether a measure of oxygen uptake (VO2) kinetics could differentiate between 12 elite male endurance (3000-10,000 m) runners and 12 elite male sprint (100-400 m) runners using a pseudo random binary sequence (PRBS) exercise protocol. All exercise tests were performed on an electrically braked cycle ergometer at a constant pedal frequency of 1 Hz. The PRBS exercise intensities alternated between 25 W and 85 W for three consecutive PRBS cycles of 300 s. VO2 was measured breath-by-breath and results were analysed by Fourier techniques in the frequency domain. Blood lactate concentrations taken pre and post testing were below 2 mM. Significantly greater amplitude components were observed in the endurance runners than sprinters at frequencies 6.7 mHz (6.71 +/- 1.09 and 5.47 +/- 0.95 ml x min(-1) x W(-1), respectively) P<0.05 and 10 mHz (4.97 +/- 0.98 and 3.56 +/- 0.69 ml x min(-1) x W(-1) respectively) P<0.01. Phase shift components were significantly shorter in the endurance runners compared to the sprinters at frequency 3.3 mHz (-35.45 +/- 4.31 and -41.26 +/- 5.82 degrees respectively) P<0.05. The results of this study show that VO2 kinetics are differentially faster in elite endurance runners than in elite sprinters. This supports the development of the PRBS technique as a test of sports performance.