海拔5380m富氧前后PWC_(170)对比观察

OXYGEN ENRICHMENT OF ROOM AIR TO IMPROVE THE PHYSICAL WORK CAPACITY AND CARDIAC INDEX AT 5 380m OF ALTITUDE

目的 :观察海拔 53 80m富氧对士兵PWC1 70 和台阶指数的影响 ;方法 :将室内氧浓度提高到 2 7.3 0 %± 0 .2 3 % ,用自制CO2 清除器吸收受试者呼出的CO2 气体 ,检测室内CO2 为 0 .1 5%± 0 .0 7% ;1 0名受试者在富氧室休息睡眠 1 2h ,出富氧室后在常氧下做二级定量负荷踏阶运动实验 ,心电图描记心率 ,然后与富氧前作对照 ;结果 :富氧后较富氧前PWC1 70 和台阶指数均增高 ,差异有显著性意义 (P <0 .0 1和P <0 .0 5) ;结论 :海拔53 80m富氧 1 2h可显著提高士兵的体力作用效率。

Objective:To compare the difference of PWC 170 between after and before exposing to oxygen enrichment of room air at 5 380m of altitude.Methods:10 young men,ages ranged 19 to 20 years, who were exposed to 5 380m of altitude from 1 400m for one month, were assigned to accept the PWC 170 test before and after exposure to oxygen enrichment of room air. And the heart rate was record by ECG.Results:There is a significant difference of PWC 170 and cardiac index between before and after accepting oxygen enrichment of room air (P<0.01 and P<0.05). Conclusion:The physical capacity could be improved by oxygen enrichment of room air at high altitude.