常压低氧吸入习服训练在高原驻训航空兵中的应用及防护效果OA

Objective To evaluate the protective effect of hypoxic gas inhalation acclimatization training against acute mountain sickness(AMS)in aviation troops during high-altitude deployment.Methods Using a hypoxic gas tolerance testing and training system,a hypoxic gas mixture with an oxygen concentration of 14.2%was prepared to simulate a hypoxic environment at 3 400 m above sea level.A one-week hypoxic acclimatization training regimen was conducted,consisting of 1-hour sessions daily.The protective effect was assessed by monitoring physiological indicators(blood oxygen saturation,heart rate)combined with a questionnaire survey on AMS symptoms.Results The acclimatization training significantly increased blood oxygen saturation and moderately attenuated the hypoxia-induced elevation in heart rate among personnel exposed to acute hypoxia.Furthermore,the training markedly reduced the incidence of AMS during high-altitude deployment.After 7 d of training,the AMS incidence decreased by 92.6%.A strong negative correlation was observed between the AMS incidence and the number of training days,which was well fitted by a logarithmic regression equation.Conclusion Hypoxic acclimatization training can effectively safeguard the physiological functions of personnel during high-altitude deployment and contributes to enhancing the training and operational capabilities of the deployed troops.