Stanek K A, Nagle F J, Bisgard G E, Byrnes W C
J Appl Physiol Respir Environ Exerc Physiol. 1979 Jun;46(6):1115-8. doi: 10.1152/jappl.1979.46.6.1115.
Published reports of oxygen consumption (VO2) during exercise in hyperoxia are equivocal. By and large, when measured at the lung using respiratory gas equations, VO2 is elevated in hyperoxia and, when measured at the blood-tissue level using the cardiovascular Fick (CVF) equation, it is unchanged. We sought to provide some insight into this problem by making through the use of both equations simultaneous determinations of VO2 during hyperoxia in exercising ponies. In normoxia, during treadmill exercise (115 m/min, 10% grade) of seven ponies, there was no difference in exercise VO2, whether it was measured by the Haldane transformation (HT) or CVF equations (P greater than 0.05). In hyperoxia, the exercise VO2 was significantly increased from the normoxia condition (P less than 0.05) when measured by the HT equation but not when measured by the CVF equation (P greater than 0.05). By use of the CVF equation as the method of choice for VO2 determinations in hyperoxia, the present data show no change in exercise VO2 in the hyperoxic condition.
关于高氧环境下运动时耗氧量（VO₂）的已发表报告并不明确。总体而言，当使用呼吸气体方程在肺部测量时，高氧环境下VO₂会升高；而当使用心血管菲克（CVF）方程在血液-组织水平测量时，VO₂则无变化。我们试图通过同时使用这两个方程来测定运动中的小马在高氧环境下的VO₂，从而为这个问题提供一些见解。在常氧环境下，七匹小马在跑步机上以115米/分钟、10%坡度进行运动时，通过霍尔丹转换（HT）方程或CVF方程测量的运动VO₂没有差异（P大于0.05）。在高氧环境下，通过HT方程测量时，运动VO₂较常氧环境显著增加（P小于0.05），但通过CVF方程测量时则无变化（P大于0.05）。以CVF方程作为高氧环境下VO₂测定的首选方法，目前的数据表明在高氧环境下运动VO₂没有变化。
