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急性缺氧暴露情况下运动对中动脉脑血流速度的影响
梁丽娟1; 熊开宇2; 田野3; 胡扬2; 孔兆伟2; 陈效科2
2005-11
Source Publication体育科学
ISSN1000-677X
Volume25Issue:11Pages:40-42
Abstract

利用常压低氧屋模拟2500m高原急性缺氧,测试了6名世居平原的男子在常氧和急性缺氧情况下,中等强度运动前后中动脉经颅多普勒血流速度的变化。结果显示,急性缺氧暴露情况下,安静时平均脑血流速度(Vm)、收缩期血流速度(Vp)和舒张期血流速度(Vd)从第5min到第20min都持续上升,且Vd增加幅度最大。常氧和急性缺氧运动后即刻,Vm和Vp均显著增加,常氧运动后Vm、Vp的增加幅度均高于急性缺氧运动后;常氧运动后Vd增加,而急性缺氧运动后Vd略有降低。提示,急性缺氧主要通过调节脑血管阻力增加舒张期血流速度,从而增加脑血流量来满足动脉氧含量下降时大脑的供氧需求;急性缺氧运动与常氧运动一样,都是通过增加收缩期血流速度来满足大脑供氧需求,但急性缺氧暴露抑制了运动对脑血流速度的增加效应;与常氧运动、急性缺氧相比,急性缺氧运动对舒张期血流速度的影响比对平均脑血流速度和收缩期血流速度的影响要大。

Keyword急性 缺氧 脑血流 强度 影响
DOI10.16469/j.css.2005.11.009
Indexed By核心期刊 ; CSSCI
Language中文Chinese
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Document TypeJournal article
CollectionFaculty of Education
Corresponding Author梁丽娟
Affiliation1.北京市体育科学研究所 ,北京
2.北京体育大学 ,北京
3.国家体育总局体育科学研究所
Recommended Citation
GB/T 7714
梁丽娟,熊开宇,田野,等. 急性缺氧暴露情况下运动对中动脉脑血流速度的影响[J]. 体育科学,2005,25(11):40-42.
APA 梁丽娟,熊开宇,田野,胡扬,孔兆伟,&陈效科.(2005).急性缺氧暴露情况下运动对中动脉脑血流速度的影响.体育科学,25(11),40-42.
MLA 梁丽娟,et al."急性缺氧暴露情况下运动对中动脉脑血流速度的影响".体育科学 25.11(2005):40-42.
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