论文部分内容阅读
目的 :探讨在高原吸入液态氧对移居青年做功效率的影响。方法 :将进驻海拔 370 0m半年的 4 0名健康青年随机分为两组 ,每组 2 0人 ,一组为对照组 ,受试者用EGM型踏车功量计做坐位踏车运动。初始负荷功率 2 5W ,每 3min递增 5 0W ,以 6 0rpm min连续踏车直至力竭。另一组为实验组 ,在运动前 10min开始用面罩吸液态氧 ,每分钟吸入量为 4L ,在踏车运动中全程吸氧 ,踏车方式同对照组。用直线回归法计算每位受试者运动功率 90W时的心率 (HR90W)。结果 :吸氧组HR90W 为(117.2 0± 8.6 8)次 分 ,对照组HR90W 为 (12 4 .6 0± 7.0 1)次 分 ,差别有非常显著性意义 (P <0 .0 1)。结论 :吸液态氧能明显提高高原移居青年的做功效率。
Objective: To investigate the effect of inhaling liquid oxygen on work efficiency of migrant youth at high altitude. Methods: Forty healthy youths who were stationed at an elevation of 370 m for six months were randomly divided into two groups of 20 patients each. The other group was control group. The participants used the EGM treadmill to do sitting exercise. The initial load power 25 W, an increase of 50 W every 3 minutes, to 6 0 rpm min continuous treadmill until exhaustion. Another group of experimental group, 10min before exercise began absorbing liquid oxygen mask, inhalation volume per minute for the 4L, in the treadmill exercise full oxygen, treadmill way with the control group. Linear regression was used to calculate the heart rate (HR90W) for each subject at 90 W of motor power. Results: HR90W was (117.2 ± 8.68) times in the oxygen inhalation group and (12.46 ± 7.01) times in the control group, HR90W was significantly different (P <0.01). Conclusion: Oxygen uptake of liquid can obviously improve work efficiency of young emigrants in plateau.