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一、高原适应锻炼 人体在模拟3000m低压舱内每天进行负荷300～600和600～900kg·m锻炼4小时,2周后再到模拟5000m停留24小时,发现动脉血氧分压(PaO_2)、肺泡动脉氧压差(A-aDO_2)和心功能等均优于单纯适应组和对照组(直接升到5000m)。在青藏高原现场验证中,见到在2800m适应锻炼16天后再到4800m时,与单纯适应组相比,肺氧合效率增高(PaO_2增加,A-aDO_2减小),高原反应发生率也明显减少。对运动员进行阶梯缺氧适应,发现急速进入4000m,心率170次的作功量(PWC_(170))明显下降,返回平原后即恢复正常。而阶梯式到达4000m者,PWC_(170)不下降,返回平原后反而增加,表明阶梯缺氧可防止4000m时有氧工作能力下降,在此高度运动
First, the plateau to adapt to exercise The human body in simulated 3000m low-pressure cabin daily load 300 ~ 600 and 600 ~ 900kg · m exercise 4 hours, 2 weeks and then simulate 5000m stay 24 hours and found that arterial partial pressure of oxygen (PaO_2), alveoli Arterial oxygen pressure difference (A-aDO_2) and cardiac function were better than the simple adaptation group and the control group (up to 5000m). In the field validation of the Qinghai-Tibet Plateau, the oxygenation efficiency (PaO_2 increased, A-aDO_2 decreased) and the incidence of altitude sickness were significantly lower than those in the simple adaptation group after 2800m training and 4800m exercise . The athletes stepped ladder hypoxia adaptation, found rapid entry 4000m, heart rate 170 times the amount of work (PWC_ (170)) decreased significantly, returned to plain after returning to normal. However, when the staircase reached 4000m, PWC_ (170) did not decrease, but increased after returning to the plain, indicating that step hypoxia prevented aerobic work ability from decreasing at 4000m. During this high movement