Montpetit R R, Léger L A, Lavoie J M, Cazorla G
Eur J Appl Physiol Occup Physiol. 1981;47(4):385-91. doi: 10.1007/BF02332966.
The purpose of this study was to evaluate the accuracy and feasibility of estimating oxygen consumption (VO2) during maximal swimming by using the backward extrapolation (BE) of the VO2 recovery curve to time zero. Two series of experiments were conducted. In the first, the validity of the BE method was ascertained by comparing the VO2 peak values obtained during free swimming (Douglas bag technique) with those estimated by the BE method during recovery after the same tests. These results were also compared with VO2 peak measured during uphill treadmill running. VO2 peak measured during maximal free swimming and estimated by the BE method during the recovery period of that test, were not significantly different. No significant difference was found between VO2 peak uphill treadmill running and free swimming. In the second series of experiments, VO2 peak was measured in each of 28 swimmers during uphill running (conventional method) and during unimpeded swimming using the BE method. The mean value was significantly higher during swimming (mean = 3.37) than during running (mean = 3.23). Seventy-five percent of the subjects had higher VO2 peak during swimming. The swimming speed during maximal swimming effort was 10% higher when the BE method was used then when the same subjects were tested by the conventional Douglas bag technique. The BE method is reliable and valid way to measure VO2 peak in maximal swimming and allows the swimmer to use his specifically trained musculature fully.
本研究的目的是通过将VO₂恢复曲线向后外推至时间零点来评估最大游泳时估计耗氧量（VO₂）的准确性和可行性。进行了两个系列的实验。在第一个实验中，通过比较自由泳（道格拉斯袋技术）期间获得的VO₂峰值与相同测试后恢复期间通过向后外推法估计的VO₂峰值，确定了向后外推法的有效性。这些结果还与上坡跑步机跑步期间测量的VO₂峰值进行了比较。最大自由泳期间测量的VO₂峰值与该测试恢复期间通过向后外推法估计的VO₂峰值没有显著差异。上坡跑步机跑步和自由泳的VO₂峰值之间没有发现显著差异。在第二个系列实验中，使用向后外推法在28名游泳运动员的上坡跑步（传统方法）和无障碍游泳期间分别测量了VO₂峰值。游泳期间的平均值（平均值 = 3.37）显著高于跑步期间（平均值 = 3.23）。75%的受试者在游泳时VO₂峰值更高。当使用向后外推法时，最大游泳努力时的游泳速度比使用传统道格拉斯袋技术测试相同受试者时高10%。向后外推法是测量最大游泳时VO₂峰值的可靠且有效的方法，并且允许游泳运动员充分使用其经过专门训练的肌肉组织。
