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目的在陆航飞行员驻训高原过程中,探讨低氧预适应训练降低急性高原反应、促进高原习服的效果。方法选择拟在海拔3700 m高原驻训的陆航某部飞行员14名,随机分为对照组和训练组。在进入高原前,训练组利用低氧呼吸器在平原(海拔500 m)进行低氧预适应训练,1次/d,90 min/次,连续5 d。对照组除不进行低氧训练外,其他日常活动与训练组一致。通过6 min步行距离测试、神经行为测试组合和急性高原反应症状评分评价受试者进入高原前后体能、脑功能和急性高原反应症状。结果与对照组相比,训练组进入高原第1 d急性高原反应症状评分显著降低(2.63±2.13 vs 0.71±0.95,P<0.05),安静和运动状态血氧饱和度升高(85.63±4.10 vs 89.14±1.07;84.43±4.28 vs 88.86±2.41,P<0.05)。6 min步行距离测试和脑功能测试各项结果两组无显著性差异。结论低氧预适应训练对促进快速习服高原环境可起到积极作用。
Objective To investigate the effect of hypoxic preconditioning training on reducing altitude sickness and promoting plateau acclimation during the flight training of Lu Hang pilots. Methods A total of 14 pilots from a certain Lu Hang stationed at 3700 m altitude were randomly divided into control group and training group. Before entering the plateau, the training group used hypoxia respirator in the plains (500 m above sea level) for hypoxic preconditioning training, once / d, 90 min / time for 5 days. In addition to the control group without hypoxia training, other daily activities and training groups. The 6-minute walking distance test, neurobehavioral test combination and acute altitude sickness symptom score were used to evaluate the physical, brain function and acute altitude sickness symptoms before and after entering the plateau. Results Compared with the control group, the symptom score of acute altitude sickness on the first day after training in the training group was significantly lower (2.63 ± 2.13 vs 0.71 ± 0.95, P <0.05), and the oxygen saturation of resting and exercising conditions was higher (85.63 ± 4.10 vs 89.14 ± 1.07; 84.43 ± 4.28 vs 88.86 ± 2.41, P <0.05). 6 min walk distance test and brain function test results of the two groups no significant difference. Conclusion Hypoxic preconditioning training can play an active role in promoting rapid acclimatization of the plateau environment.