渐进式低氧训练后急性低氧暴露对健康男性大学生脑氧饱和度的影响  

Effects of Acute Hypoxia Exposure on Cerebral Oxygen Saturation after Stepwise Hypoxic Training in Male College Students

作　　者：马国东[1] 罗冬梅[2] 徐飞[3] 胡扬[2] 李岳[4] 腾轶超[4] 

机构地区：[1]吉林体育学院运动人体科学系,吉林长春130022 [2]北京体育大学,北京100084 [3]浙江工业大学,浙江杭州310014 [4]清华大学医学院生物医学工程系,北京100084

出　　处：《天津体育学院学报》2010年第5期385-387,共3页Journal of Tianjin University of Sport

基　　金：国家自然科学基金项目(项目编号:60578004);北京市教委重点实验室开放性课题

摘　　要：目的:探讨渐进式低氧训练后急性低氧暴露对脑氧饱和度的影响。方法:以45名男性大学生为实验对象,采用近红外光谱技术测试其在6周实验期内,常氧常压、急性低氧暴露(模拟海拔4 800 m)、3周渐进式低氧训练(模拟海拔2 500 m、3 500 m、4 800 m)、再次4 800 m低氧暴露运动时脑氧饱和度、动脉血氧饱和度(SpO2)。结果:3周渐进式低氧训练显著提高脑氧饱和度和SpO2;急性低氧暴露运动中脑氧饱和度和SpO2相对有效下降值存在相关性(r=0.792,P<0.01)。结论:3周渐进式低氧训练改善脑组织的氧合状况,产生耐缺氧适应;低氧运动时脑氧饱和度随血氧饱和度的下降而降低。Objective：To study the effect of progressive hypoxic training during acute hypoxia exposure on cerebral oxygen saturation.Methods：Cerebral oxy-gen saturation and arterial oxygen saturation（SpO2）of 45 male college students were measured in different conditions,exercised at normoxia,acute hypoxic exposure（simulated altitude of 4 800 m）,three-week progressive hypoxic training（altitude control for 2 500,3 500,4 800 m）,again acute hypoxic ex-posure（simulated altitude of 4 800 m）during the experimental period by near infrared spectroscopy.Results：The three-week training in progressive hypox-ia significantly increased cerebral oxygen saturation and SpO2;the relative decline in value the effective correlation coefficient was 0.792（P〈0.01）between brain oxygen saturation and SpO2 during acute hypoxic exposure.Conclusions：The three-week progressive hypoxia training to improve the oxygenation status of brain tissue,resulting in hypoxia adaptation;cerebral oxygen saturation decreased with a decline in oxygen saturation during hypoxic exercise.

关 键 词：急性低氧暴露 低氧运动 脑血氧饱和度 指脉血氧饱和度 

分 类 号：G804.7[文化科学—运动人体科学]