Brisswalter J, Legros P
Laboratoire de Biomécanique et Physiologie, INSEP, Paris, France.
Int J Sports Med. 1994 Jul;15(5):238-41. doi: 10.1055/s-2007-1021053.
The purpose of this study was to quantify total intraindividual variability in energy cost of running (C), ventilation (VE), respiratory frequency (RF), heart rate (HR), lactate concentration (La) and stride rate (SR) at usual training pace in French elite middle distance runners. Subjects were monitored four times a week during submaximal treadmill tests at 75% VO2max speed (15.8 +/- .02 km.h-1). No significant differences (p > .05) were found between tests in C, VE, RF, HR, SR. Significant day to day differences were found in La (0.5 +/- 0.3, p < .025). However, a wide range of individual coefficients of variation were observed for C (0.2-10.6), VE (0.9-8.8) and RF (0.7-9.3). SR appears to be the most stable parameter (0.2-2.6). No correlation was found between these individual variations. These results suggest that in well-trained runners C, VE, RF, HR and SR are stable measures for assessing the efficacy of procedures aimed at improving the energy cost of running. For the speed used in testing, the respiratory parameters and energy cost of running presented a wide range of individual variation whereas stride rate appeared to be a very stable measure.
本研究的目的是量化法国优秀中长跑运动员在常规训练配速下跑步能量消耗（C）、通气量（VE）、呼吸频率（RF）、心率（HR）、乳酸浓度（La）和步频（SR）的个体内总变异性。在以75%最大摄氧量速度（15.8±0.02千米/小时）进行的次极量跑步机测试中，每周对受试者进行4次监测。在C、VE、RF、HR、SR的测试之间未发现显著差异（p>0.05）。在La方面发现了显著的每日差异（0.5±0.3，p<0.025）。然而，观察到C（0.2 - 10.6）、VE（0.9 - 8.8）和RF（0.7 - 9.3）的个体变异系数范围很广。SR似乎是最稳定的参数（0.2 - 2.6）。在这些个体变异之间未发现相关性。这些结果表明，对于训练有素的跑步者，C、VE、RF、HR和SR是评估旨在降低跑步能量消耗的程序效果的稳定指标。对于测试中使用的速度，呼吸参数和跑步能量消耗呈现出广泛的个体变异，而步频似乎是一个非常稳定的指标。
