目的研究飞行员飞行后肺通气功能、脉搏和血氧饱和度的变化,为飞行训练中呼吸防护装备的有效性、可靠性鉴定提供客观生理指标。方法分别测定40名国产战斗机飞行员飞行前30min和飞行后15min内及40名地勤人员肺通气功能指标、脉搏和血氧饱和度,并比较吸烟者与非吸烟者肺通气功能指标。结果飞行员飞行训练前后、飞行员与地勤人员、不同飞行次数之间肺通气功能指标、脉搏和血氧饱和度比较,均无显著性差异;飞行员小气道功能的部分指标吸烟组与非吸烟组比较有显著性差异。结论飞行训练中呼吸防护装备有效、可靠,对飞行员的肺通气功能、脉搏和血氧饱和度无明显影响,但长期大量吸烟会导致其小气道功能下降。 Objective To study the change of pulmonary ventilation, pulse rate and oxygen saturation after pilot flight, and to provide objective physiological indexes for the validity and reliability of respiratory protection equipment in flight training. Methods Lung function parameters, pulse rate and oxygen saturation of 40 domestic fighter pilots were measured respectively 30 min before flight, 15 min after flight and 40 ground crew, and lung function parameters were compared between smokers and non-smokers. Results There was no significant difference in the pulmonary function index, pulse rate and oxygen saturation between pilots and ground crew before and after flight training, and the difference between the number of pilots and flight attendants. There was no significant difference between the pilots and the ground crew and the non-smoking group Significant difference. Conclusion The respiratory protective equipment in flight training is effective and reliable, and has no obvious effect on the pulmonary ventilation function, pulse rate and oxygen saturation of pilots. However, long-term heavy smoking will lead to the decrease of small airway function.