Burger S C, Bertram S R, Stewart R I
Department of Medical Physiology and Biochemistry, University of Stellenbosch, Parowvallei, CP.
S Afr Med J. 1990 Sep 15;78(6):327-9.
Since the 2.4 km run time test is routinely used in military training programmes as an indicator of aerobic capacity and its possible improvement, an attempt was made to: (i) establish a regression equation of VO2max v. 2.4 km run time in a group of 20 young military volunteers; and (ii) determine whether this equation could be used to predict VO2max reliably from the 2.4 km time obtained from another group. Before and after training, VO2max was measured in all subjects using a treadmill test, and 2.4 km run time was determined in the field. Linear regression equations using the 2.4 km run time as the independent variable accounted for 76-92% of the variance in VO2max, while the standard error of the estimate varied from 2.24-2.91 ml/kg/min. In the second test group, the directly measured VO2max was 59.89 +/- 0.99 ml/kg/min, while the mean value estimated from the regression equation of the first group was 59.61 +/- 1.16 ml/kg/min (P less than 0.001). It was concluded that, in the population studied, the 2.4 km run time in the field reliably predicts VO2max measured during treadmill exercise in the laboratory.
由于2.4公里跑步时间测试在军事训练项目中经常被用作有氧能力及其可能改善情况的指标，因此进行了以下尝试：（i）在一组20名年轻军事志愿者中建立最大摄氧量（VO2max）与2.4公里跑步时间之间的回归方程；（ii）确定该方程是否可用于根据另一组获得的2.4公里时间可靠地预测VO2max。在训练前后，使用跑步机测试测量所有受试者的VO2max，并在野外测定2.4公里跑步时间。以2.4公里跑步时间作为自变量的线性回归方程解释了VO2max变异的76%-92%，而估计标准误差在2.24-2.91毫升/千克/分钟之间。在第二个测试组中，直接测量的VO2max为59.89±0.99毫升/千克/分钟，而根据第一组回归方程估计的平均值为59.61±1.16毫升/千克/分钟（P<0.001）。得出的结论是，在所研究的人群中，野外2.4公里跑步时间能够可靠地预测实验室跑步机运动期间测量的VO2max。
