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在高海拔地区进行训练或比赛,运动员的最先反应就是呼吸频率加快,呼吸深度加大。由于过度的呼气与吸气,血液中的二氧化碳越过临界值通过肺叶被呼出,由于二氧化碳的大量呼出,血液中的重碳酸氢盐离子过多,使血液中的PH值不平衡,碱性增大。只有减少血液中重碳酸氢盐的含量,这样,血液中和乳酸的能力增强,PH值才能保持平衡,否则,运动成绩就会受到影响。一般情况下,低氧压不达一定程度时不会对最大吸氧量产生很大影响,然而,当适应了高海拔地区的训练后,血红细胞数量就会增加,从而降低临界氧压。
In high altitude training or competition, athletes first reaction is to speed up breathing, breathing depth increased. Due to excessive expiration and inspiration, the blood in the carbon dioxide across the critical value is exhaled through the lobe, due to the large number of exhaled carbon dioxide, excessive bicarbonate ions in the blood, so that the PH value in the blood is not balanced, basic increase Big. Only by reducing the level of bicarbonate in the blood, the ability of the blood to neutralize lactate is enhanced and the pH is balanced, otherwise the performance of the athlete will be affected. Under normal circumstances, hypoxia pressure does not reach a certain level will not have a great impact on maximum oxygen uptake, however, when adapted to high altitude training, the number of red blood cells will increase, thereby reducing the critical oxygen pressure.