Investigation of cardiopulmonary reserve function of fighter pilots and analysis of influencing factors
Objective To investigate the cardiopulmonary reserve function of fighter pilots and analyze its related influencing factors.Methods A total of 112 fighter pilots who underwent physical examination in the Northern Theater Air Force Hospital from March 2022 to March 2023 were selected as the study objects.All pilots underwent cardiopulmonary exercise testing(CPET),CPET results were recorded,and factors affecting CPET indexes were analyzed.Results All pilots achieved the maximum exercise standard,and the load exercise time was controlled within 6-10 min,which met the test standard.The average peak oxygen uptake was(2 391.63±372.08)ml/min,the average peak oxygen uptake in kg was(33.16±4.67)ml/(min·kg),the average anaerobic threshold oxygen uptake in kg was(20.71±4.03)ml/(min·kg),the percentage of average anaerobic threshold to peak oxygen uptake was(62.51%±7.89%),the average peak metabolic equivalent was(9.41±1.48),the average peak heart rate was(169.01±11.83)times/min,the average peak oxygen pulse was(14.78±2.52)(ml·min)/time,the average peak exercise load was(215.47±27.80)Watt,the average peak ventilation volume was(78.59±16.83)L/min,and the average peak respiratory exchange rate was(1.20±0.03).Age was the influence factor of peak exercise load,anaerobic threshold oxygen uptake in kg,peak heart rate and anae-robic threshold to peak oxygen uptake(P<0.05).Smoking was the influence factor of peak oxygen uptake and peak oxygen uptake in kg(P<0.05).Neck circumference was the influence factor of peak oxygen uptake(P<0.05).Body mass index was the influence factor of anaerobic threshold oxygen uptake in kg,peak metabolic equivalent,peak heart rate,peak oxygen uptake in kg and peak venti-lation volume(P<0.05).Biased constitution was the influence factor of anaerobic threshold oxygen uptake in kg,peak oxygen uptake and peak oxygen uptake in kg(P<0.05).Conclusion All pilots tested have good cardiopulmonary reserve function.Age,smoking,neck circumference,body mass index and biased constitution are the factors affecting cardiopulmonary reserve function of pilots.Pilots should be guided to develop a healthy lifestyle,enhance physical fitness and change bad habits.
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