医学
低氧血症
体育锻炼
内科学
运动强度
心率
心脏病学
增量训练
缺氧(环境)
有氧运动
麻醉
运动生理学
作者
Timothy P. Gavin,Joel M. Stager
出处
期刊:Respiration Physiology
[Elsevier]
日期:1999-05-03
卷期号:115 (3): 317-323
被引量:40
标识
DOI:10.1016/s0034-5687(99)00012-2
摘要
Abstract To investigate the effect of exercise mode on arterial oxyhemoglobin saturation (SaO2), 13 healthy, actively training men who displayed exercise-induced hypoxemia (EIH) performed two incremental maximal exercise tests: uphill treadmill running and cycle ergometry. At maximum, treadmill running resulted in a lower SaO2 (88.6±2.0% versus 92.6±2.0%), a lower ventilatory equivalent for carbon dioxide ( V E V CO 2 ; 28.8±0.6 versus 31.2±0.9), and a higher maximal oxygen consumption ( V O 2 , MAX ; 4.83±0.11 l·min-1 versus 4.61±0.14 l·min-1) when compared to cycle ergometry. When data were combined from maximal running and cycling, SaO2 was correlated to V E V CO 2 (r=0.54). However, there was no relationship between the differences in SaO2 and ventilation between exercise modes. This suggests that ventilation is important in the maintenance of SaO2, but that the difference observed in SaO2 between treadmill running and cycle ergometry cannot be explained by differences in ventilation and must be due to differences in diffusion limitation or ventilation-perfusion inequality.
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