Comparative analysis of 2 kinds of pilot hypoxia training effects
10.3760/cma.j.cn113854-20231106-00110
- VernacularTitle:2种飞行员缺氧训练效果对比研究
- Author:
Yan ZHANG
1
;
Weiru SHI
;
Liping WANG
;
Xiaopeng LIU
;
Lihao XUE
;
Dongqing WEN
;
Lihua YU
;
Lei TU
;
Zhao GU
;
Tong YANG
;
Guiyou WANG
Author Information
1. 空军军医大学空军特色医学中心高空生理研究室，北京 100142
- Publication Type:Journal Article
- Keywords:
Hypoxia;
Decompression;
Blood oxygen saturation;
Hypoxia tolerance time;
Pilots
- From:
Chinese Journal of Aerospace Medicine
2024;35(2):86-90
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To provide scientific basis for pilots′ hypoxia training by comparing and analyzing the effects of hypoxia training under normobaric and hypobaric environments.Methods:Forty-two healthy subjects were selected. The pilot reduced oxygen breathing device and hypobaric chamber were used to simulate 7 500 m hypoxia training, and blood oxygen saturation, heart rate, respiratory rate and hypoxia endurance time were monitored and recorded. The hypoxia symptom questionnaire was filled out by the subjects after 2 training sessions. The hypoxia endurance time and hypoxia tolerance grade of normobaric and hypobaric hypoxia training were analyzed, and the differences of blood oxygen saturation and hypoxia symptoms were compared between 2 hypoxia trainings.Results:Forty-two subjects completed the normobaric and hypobaric hypoxia trainings. The survival curve analysis of hypoxia endurance time showed that the median hypoxia endurance time of normobaric and hypobaric hypoxia training was [3.17(2.70, 3.64)] min and [3.67(3.46, 3.88)] min respectively, with no significant difference ( P>0.05). There was no significant difference in the grade distribution of hypoxia tolerance between 2 hypoxia trainings ( P>0.05). The blood oxygen saturation curves of 2 hypoxia trainings were basically consistent. There was no significant difference between 2 hypoxia trainings on blood oxygen saturation, heart rate and respiratory rate (all P>0.05). There were significant differences in difficulty in calculation, difficulty in concentration and with palpitation ( χ2=4.81, 3.97, 3.98, P=0.028, 0.046, 0.046). Conclusions:The analysis showed that most physiological responses and subjective symptoms of pilots are quite similar in the normobaric and hypobaric hypoxia training at simulated 7 500 m. Both normobaric and hypobaric exposures show the similar hypoxia training effect.
