Study on anti-G ability and cardiopulmonary endurance of pilots
10.3760/cma.j.cn113854-20220720-00096
- VernacularTitle:飞行员抗荷能力与心肺耐力水平的研究
- Author:
Xue LI
1
;
Jianhua XU
;
Yong LIU
;
Guohua JIANG
;
Yongchun WANG
;
Jin MA
;
Jiaheng ZHOU
;
Xiangwu FEI
;
Xiaojian CHEN
;
Qi WU
;
Qingju WANG
;
Wei HUANG
Author Information
1. 空军杭州特勤疗养中心疗养二区，杭州310007
- Publication Type:Journal Article
- Keywords:
Heart rate;
Exercise;
Oxygen uptake;
Anti-G ability;
Pilots
- From:
Chinese Journal of Aerospace Medicine
2022;33(4):193-198
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To explore the relationship among maximal oxygen uptake (VO 2max), heart rate recovery after exercise (HRR) and anti-G ability of fighter pilots. Methods:A total of 90 fighter pilots were selected by cluster sampling method, and the +G z tolerance that devoted by anti-G staining manoeuvre performing was predicted by anti-G and anti-hypoxia ability detector and G tolerance empirical formula. The values of VO 2max and HRR were collected under 25 W/min power increasing rate scheme. According to the level of VO 2max, pilots were divided into 3 groups: low level (the bottom third), intermediate level (the middle third) and high level (the top third). The differences of HRR value and +G z tolerance increment among the first, second and third minutes after exercise were compared among the pilots of different level of VO 2max. The correlation among the values of HRR, VO 2max and +G z tolerance increment were analyzed. Results:There were significant differences in the values of HRR and +G z tolerance increment at the second and the third minutes of exercise among the pilots with different VO 2max levels in 3 groups ( F=7.65, 10.64, 10.28, all P≤0.001). There was no obvious correlation between the values of HRR, VO 2max and +G z tolerance increment at the first minute after exercise ( r=0.020, -0.017, P=0.852, 0.871). The value of HRR at the second minute after exercise was positively correlated with VO 2max ( r=0.288, P=0.006), but not obviously with the +G z tolerance increment ( r=-0.017, P=0.150). The value of HRR value at the third minute was positively correlated with the increase of VO 2max and +G z tolerance increment ( r=0.433, 0.240, P<0.001, =0.023). VO 2max was positively correlated with the increase of +G z tolerance increment ( r=0.436, P<0.001). Conclusions:The increase of pilots′ VO 2max is conducive to the improvement of anti-G ability. The value of HRR at the third minute after exercise can be used as a sensitive monitoring index to predict pilot′s G-tolerance.
