模拟海拔4800m急性低氧运动对肌氧饱和度的影响

Effects of 4800m Acute Hypoxia Exercise on Muscle Oxygen Saturation

目的:观察急性低氧运动对肌氧饱和度的影响,探讨肌氧饱和度与脉搏血氧饱和度(Pulse Oxy-gen Saturation,SpO2)相关关系。方法:以42名健康男性大学生为实验对象,采用无损伤的近红外光谱技术(near infrared spectroscopy,NIRS)监测常氧、急性低氧暴露6 h期间肌氧饱和度,同时检测SpO2。结果:肌氧饱和度运动开始后显著下降,急性低氧运动下降幅度加大;肌氧饱和度和SpO2呈正相关(r=0.949,P<0.01)。结论:肌氧饱和度相对有效下降值(Deff)反应运动中组织动员和利用氧气情况,可评定人体运动过程中肌肉氧化代谢能力;低氧运动时肌氧饱和度随血氧饱和度的下降而降低;肌氧饱和度有望成为低氧训练适应能力的简单无创预测指标。

Purpose： To observe Acute hypoxic exercise on muscle oxygen saturation,muscle oxygen saturation and pulse oxygen saturation（Pulse Oxygen Saturation,SpO2） correlation.Methods： 42 healthy male college students were tested by non-invasive near infrared spectroscopy（NIRS）to monitor their normoxic,acute hypoxic exposure 6h muscle oxygen saturation and at the same time their SpO2 was detected.Results： The muscle oxygen saturation decreased significantly after the campaign began.Acute hypoxia exacerbate the decrease;Muscle oxygen saturation and SpO2 were positively correlated（r=0.949,P0.01）.Conclusion： Deff response to movement mobilization and utilization of oxygen conditions.The muscle oxidative metabolism of the body during exercise can be assessed;Muscle oxygen saturation is positively correlated to SpO2.Hypoxic muscle oxygen saturation during exercise decreased with blood oxygen saturation;muscle oxygen saturation is expected to be a simple noninvasive indicator of the adaptation of hypoxia training.