高原体力训练改善了在高海拔地的竞技状态。但是对平原地的竞技改善却不定论。低氧诱导的继发性红细胞增多是高原工作能力增加的主要原因。由于低氧,血浆容量迅速降低,红细胞生成素随之增加,从而出现了常见的惭时性血红蛋白和血球压积增加。在中度高原逗留了8～10天的非运动员和耐力良好的运动员,其网织红细胞生成量大增。同时在3周的训练期间,个体的血红蛋白增加了1～4％,随着时间的延长,血红蛋白的增加更多。正常血 Altitude physical training improves the competitive state at high altitudes. But the competitive improvement in the plains is inconclusive. Hypoxia-induced secondary erythrocyte increase is the main reason for the increase of plateau working ability. As a result of hypoxia, the plasma volume decreases rapidly, with the consequent increase in erythropoietin, resulting in a common increase in ashamed hemoglobin and hematocrit. Non-athletes and endurance athletes who spent 8-10 days in moderate plateaus greatly increased their reticulocyte production. At the same time during the three weeks of training, individual hemoglobin increased by 1 to 4%, with the extension of time, hemoglobin increased more. Normal blood