Pub Date : 2018-12-15DOI: 10.3760/CMA.J.ISSN.1007-6239.2018.03-04.015
Lüpu Zhang, Xiaoyong Cao, Shengli Zhang
{"title":"Comparison analysis on the disease spectrums between the flying personnel in physical examination and in hospital","authors":"Lüpu Zhang, Xiaoyong Cao, Shengli Zhang","doi":"10.3760/CMA.J.ISSN.1007-6239.2018.03-04.015","DOIUrl":"https://doi.org/10.3760/CMA.J.ISSN.1007-6239.2018.03-04.015","url":null,"abstract":"","PeriodicalId":9904,"journal":{"name":"Chinese Journal of Aerospace Medicine","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87829266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-15DOI: 10.3760/CMA.J.ISSN.1007-6239.2018.03-04.016
Xiaoyong Cao, Lüpu Zhang, Shengli Zhang
{"title":"Analysis on hearing loss of transport aircraft flying personnel","authors":"Xiaoyong Cao, Lüpu Zhang, Shengli Zhang","doi":"10.3760/CMA.J.ISSN.1007-6239.2018.03-04.016","DOIUrl":"https://doi.org/10.3760/CMA.J.ISSN.1007-6239.2018.03-04.016","url":null,"abstract":"","PeriodicalId":9904,"journal":{"name":"Chinese Journal of Aerospace Medicine","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85335804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-15DOI: 10.3760/CMA.J.ISSN.1007-6239.2018.03-04.005
Hongyu Chen, Yuntao Gao, H. Dai, Litong Zheng
Objective To reduce flight accidents and ensure aviation safety by comparing the combination effects of three attitude directional indicator (ADI) designs and two reference frames [moving horizon (MH) and moving aircraft (MA)] on the operation of aircraft unusual attitude recovery. Methods The simulated recovery experiments were carried out by E-prime programming the interactively matched pictures that were presented by the regular perspective-view aircraft symbol (PAS) under unusual flight altitude and two reference frames that referenced MH and MA. The subjects were 34 male college students in the full-time military academy, with average age of (22.43±1.32) years old. The experiment was done based on 2×3×4 intra-test design. The combination of 2 reference frames and 3 ADI styles produced six displays and each of them corresponded to 8 rotation altitudes. Totally 48 pictures were displayed. During learning phase, the usual or unusual flight altitude pictures were presented to the subjects and the recovery operation was instructed to press the " F" key for the recovery to the left and the " J" key to the right. During training phase, 4 unusual flight altitude pictures were presented to the subjects. When the subjects were able to correctly judge these 4 pictures they were thought to be ready for the formal experiment. In formal experiment, 48 pictures were randomly presented to the subjects and the reaction time and the number of correct recovery were recorded. Results The intra-group variance analysis with reaction time as the dependent variable indicated that the effect of the interaction between ADI style and reference frame on subjects′ reaction time was statistically significant, [F(2, 66)=6.267, P=0.003, η2=0.160]. The combination of conventional ADI format and PAS format with MA reference frame showed better matched effect. The intra-group analysis of the variance with correct rate as the dependent variable indicated that the effect of interaction between the ADI style and the reference frame on subjects′ correct rate was statistically significant [F(2, 66)=12.018, P<0.001, η2=0.267]. The MH reference frame matched with 3 ADI formats showed better results than the CMD-MA display and the CON-MA display. PAS-MA design also showed good performance. Conclusions ①Two new ADI formats (CMD, PAS) show certain advantages that traditional and conventional ADI format (CON) does not have. ②The MH reference frame has the advantage on overall correct recovery rate. ③The study theoretically recommends the PAS-MA display design. Key words: Perceptual disorders; Human engineering; Man-machine systems; Aircraft; Data display; Flight attitudes
{"title":"Research on the influence of flight attitude display on the operation of unusual attitude recovery","authors":"Hongyu Chen, Yuntao Gao, H. Dai, Litong Zheng","doi":"10.3760/CMA.J.ISSN.1007-6239.2018.03-04.005","DOIUrl":"https://doi.org/10.3760/CMA.J.ISSN.1007-6239.2018.03-04.005","url":null,"abstract":"Objective \u0000To reduce flight accidents and ensure aviation safety by comparing the combination effects of three attitude directional indicator (ADI) designs and two reference frames [moving horizon (MH) and moving aircraft (MA)] on the operation of aircraft unusual attitude recovery. \u0000 \u0000 \u0000Methods \u0000The simulated recovery experiments were carried out by E-prime programming the interactively matched pictures that were presented by the regular perspective-view aircraft symbol (PAS) under unusual flight altitude and two reference frames that referenced MH and MA. The subjects were 34 male college students in the full-time military academy, with average age of (22.43±1.32) years old. The experiment was done based on 2×3×4 intra-test design. The combination of 2 reference frames and 3 ADI styles produced six displays and each of them corresponded to 8 rotation altitudes. Totally 48 pictures were displayed. During learning phase, the usual or unusual flight altitude pictures were presented to the subjects and the recovery operation was instructed to press the \" F\" key for the recovery to the left and the \" J\" key to the right. During training phase, 4 unusual flight altitude pictures were presented to the subjects. When the subjects were able to correctly judge these 4 pictures they were thought to be ready for the formal experiment. In formal experiment, 48 pictures were randomly presented to the subjects and the reaction time and the number of correct recovery were recorded. \u0000 \u0000 \u0000Results \u0000The intra-group variance analysis with reaction time as the dependent variable indicated that the effect of the interaction between ADI style and reference frame on subjects′ reaction time was statistically significant, [F(2, 66)=6.267, P=0.003, η2=0.160]. The combination of conventional ADI format and PAS format with MA reference frame showed better matched effect. The intra-group analysis of the variance with correct rate as the dependent variable indicated that the effect of interaction between the ADI style and the reference frame on subjects′ correct rate was statistically significant [F(2, 66)=12.018, P<0.001, η2=0.267]. The MH reference frame matched with 3 ADI formats showed better results than the CMD-MA display and the CON-MA display. PAS-MA design also showed good performance. \u0000 \u0000 \u0000Conclusions \u0000①Two new ADI formats (CMD, PAS) show certain advantages that traditional and conventional ADI format (CON) does not have. ②The MH reference frame has the advantage on overall correct recovery rate. ③The study theoretically recommends the PAS-MA display design. \u0000 \u0000 \u0000Key words: \u0000Perceptual disorders; Human engineering; Man-machine systems; Aircraft; Data display; Flight attitudes","PeriodicalId":9904,"journal":{"name":"Chinese Journal of Aerospace Medicine","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82691645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-15DOI: 10.3760/CMA.J.ISSN.1007-6239.2018.03-04.011
Jiwen Jiang, Xiaoyan Zheng, Qian Li, M. Liu
Objective To investigate the effects of mild thalassemia on hypoxia tolerance of civil aviation student pilots, and provide the basis for aviation medical identification of thalassemia in civil aviation pilots. Methods The parameters of red blood cells and hemoglobin were analyzed in 1 711 subjects including the student candidates who were checked in the physical examination for recruitment and the student pilots of flight college. The thalassemia gene tests were performed for the subjects with small cell and low pigmented anemia to diagnose if they were with thalassemia. Twenty-five mild thalassemia cases and 19 healthy cases were chosen for the comparison according to the principles of proximity and phone call reachable. The hypoxia test was conducted at 7.5 km simulated altitude by Model 2007 anti-G/anti-hypoxia Detector. SaO2, heart rate and blood pressure were respectively recorded at 20 s, 60s and 120 s of the test. In case of the test did not reach to 120 s but the SaO2 had been lower than 60% the test was terminated and the SaO2, heart rate and blood pressure were marked at the moment. The subjects were tested by writing digits with down sequence before and after hypoxia test. In 7.5 km simulated altitude test if the SaO2 level had decreased to 60% within 120 s the test would be terminated and the actual test duration was recorded. Results ①Ninety-seven cases of thalassemia were found in 1 711 students (5.67%) and all cases were mild thalassemia. The highest detection rate was found in the students of Hainan Province, accounting for 20%. ②The difference of test duration was statistically significant between mild thalassemia group and health group under simulated 7.5 km altitude hypoxia environment (Z=3.630, P 0.05), but the difference at the end of test was statistically significant (t=5.248, P 0.05). The difference of systolic pressure at 60 s and the difference of diastolic pressure at the end of test were statistically significant between two groups [(t=2.215, P=0.029) and (t=2.518, P=0.018)]. The difference on the number of correctly writing digits with down sequence was insignificant between two groups before the hypoxia test (P>0.05), but was significant after the test (t=3.489, P<0.01). Conclusions The hypoxia tolerance of the patients with mild thalassemia is lower than that of the healthy population. It is suggested that more attention should be paid to the candidates with mild thalassemia in the physical examination for recruiting student pilots. The pilots with mild thalassemia should minimize the flying on plateau. Key words: Thalassemia; Hypoxia; Oximetry; Consciousness; Student pilots
目的探讨轻度地中海贫血对民航学员飞行员缺氧耐受性的影响，为民航飞行员地中海贫血的航空医学鉴定提供依据。方法对1 711名招生体检学生和飞行学院学员进行红细胞和血红蛋白指标分析。对小细胞、低色素性贫血患者进行地中海贫血基因检测，诊断其是否患有地中海贫血。根据就近和电话可及原则，选取25例轻度地中海贫血病例和19例健康病例进行比较。缺氧试验采用2007型抗g /抗缺氧检测器在7.5 km模拟高度进行。分别在试验后20 s、60s和120 s记录血氧饱和度、心率和血压。如果测试未达到120秒，但SaO2已低于60%，则终止测试，同时标记SaO2，心率和血压。在缺氧试验前后，对受试者进行按顺序书写数字的测试。在7.5 km模拟高度试验中，如果SaO2水平在120 s内下降到60%，则终止试验，并记录实际试验持续时间。结果①1 711名学生中发现地中海贫血97例(5.67%)，均为轻度地中海贫血。以海南省学生检出率最高，占20%。②轻度地中海贫血组与健康组在模拟7.5 km海拔缺氧环境下的测试持续时间差异有统计学意义(Z=3.630, P 0.05)，但在测试结束时差异有统计学意义(t=5.248, P 0.05)。两组患者60 s收缩压和试验结束舒张压差异均有统计学意义[(t=2.215, P=0.029)和(t=2.518, P=0.018)]。两组患者在缺氧试验前正确书写顺序为下的数字数差异无统计学意义(P>0.05)，缺氧试验后差异有统计学意义(t=3.489, P<0.01)。结论轻度地中海贫血患者的耐氧能力低于正常人群。建议在招收飞行员学生体检时，应重视轻度地中海贫血考生。轻度地中海贫血的飞行员应尽量减少高原飞行。关键词:地中海贫血;缺氧;血氧定量法;意识;学生飞行员
{"title":"Preliminary study of the effects of mild thalassemia on hypoxia tolerance of civil aviation student pilots","authors":"Jiwen Jiang, Xiaoyan Zheng, Qian Li, M. Liu","doi":"10.3760/CMA.J.ISSN.1007-6239.2018.03-04.011","DOIUrl":"https://doi.org/10.3760/CMA.J.ISSN.1007-6239.2018.03-04.011","url":null,"abstract":"Objective \u0000To investigate the effects of mild thalassemia on hypoxia tolerance of civil aviation student pilots, and provide the basis for aviation medical identification of thalassemia in civil aviation pilots. \u0000 \u0000 \u0000Methods \u0000The parameters of red blood cells and hemoglobin were analyzed in 1 711 subjects including the student candidates who were checked in the physical examination for recruitment and the student pilots of flight college. The thalassemia gene tests were performed for the subjects with small cell and low pigmented anemia to diagnose if they were with thalassemia. Twenty-five mild thalassemia cases and 19 healthy cases were chosen for the comparison according to the principles of proximity and phone call reachable. The hypoxia test was conducted at 7.5 km simulated altitude by Model 2007 anti-G/anti-hypoxia Detector. SaO2, heart rate and blood pressure were respectively recorded at 20 s, 60s and 120 s of the test. In case of the test did not reach to 120 s but the SaO2 had been lower than 60% the test was terminated and the SaO2, heart rate and blood pressure were marked at the moment. The subjects were tested by writing digits with down sequence before and after hypoxia test. In 7.5 km simulated altitude test if the SaO2 level had decreased to 60% within 120 s the test would be terminated and the actual test duration was recorded. \u0000 \u0000 \u0000Results \u0000①Ninety-seven cases of thalassemia were found in 1 711 students (5.67%) and all cases were mild thalassemia. The highest detection rate was found in the students of Hainan Province, accounting for 20%. ②The difference of test duration was statistically significant between mild thalassemia group and health group under simulated 7.5 km altitude hypoxia environment (Z=3.630, P 0.05), but the difference at the end of test was statistically significant (t=5.248, P 0.05). The difference of systolic pressure at 60 s and the difference of diastolic pressure at the end of test were statistically significant between two groups [(t=2.215, P=0.029) and (t=2.518, P=0.018)]. The difference on the number of correctly writing digits with down sequence was insignificant between two groups before the hypoxia test (P>0.05), but was significant after the test (t=3.489, P<0.01). \u0000 \u0000 \u0000Conclusions \u0000The hypoxia tolerance of the patients with mild thalassemia is lower than that of the healthy population. It is suggested that more attention should be paid to the candidates with mild thalassemia in the physical examination for recruiting student pilots. The pilots with mild thalassemia should minimize the flying on plateau. \u0000 \u0000 \u0000Key words: \u0000Thalassemia; Hypoxia; Oximetry; Consciousness; Student pilots","PeriodicalId":9904,"journal":{"name":"Chinese Journal of Aerospace Medicine","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80857469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-15DOI: 10.3760/CMA.J.ISSN.1007-6239.2018.03-04.007
Chun-lei Zhou, Xiangfang Yang, Zhihui Xie, D. Miao, Yong Sun, Bin Shi
Objective To investigate the main risk factors induced to coronary artery stenosis in order to provide evidence for prevention of coronary heart disease in flying personnel. Methods By analyzing the computed tomography angiography (CTA), 44 flying personnel clinically suspected as coronary heart disease were divided into coronary artery stenosis group and normal coronary artery group. The comparisons on age, flying aircraft type, flying duties, body mass index (BMI), flying hours, night flying hours, blood lipid level, serum glucose level, histories of hypertension and smoking were conducted between two groups. The Logistic multivariate regression analysis was used for determining risk factors. Results The CTA results indicated 25 cases (56.82%) of coronary artery stenosis and 19 normal cases. The univariate analysis showed the statistical differences on age, flight hours, night flight hours, and the incidences of hypercholesterolemia, hyper low-density lipoprotein cholesterolemia, Hypo high-density lipoprotein cholesterolemia and hypertriglyceridemia between coronary artery stenosis group and coronary artery normal group (χ2=4.429-14.329, P<0.05). The Logistic multivariate regression analysis showed that hyper low-density lipoprotein cholesterolemia (OR=7.026, 95%CI: 1.831-26.959, P<0.05) and night flight hours (OR=4.461, 95%CI: 1.694-11.746, P<0.05) were the independent risk factors of coronary artery stenosis. Conclusions Hyper low-density lipoprotein cholesterolemia and night flying hours are the independent risk factors of coronary artery stenosis in pilots. These hint that the change of circadian rhythms would be an important factor to induce coronary artery stenosis besides the common risk factors. Key words: Coronary artery stenosis; Circadian rhythm; Risk factors; Flying personnel
{"title":"Investigation of risk factors of coronary artery stenosis in flying personnel","authors":"Chun-lei Zhou, Xiangfang Yang, Zhihui Xie, D. Miao, Yong Sun, Bin Shi","doi":"10.3760/CMA.J.ISSN.1007-6239.2018.03-04.007","DOIUrl":"https://doi.org/10.3760/CMA.J.ISSN.1007-6239.2018.03-04.007","url":null,"abstract":"Objective \u0000To investigate the main risk factors induced to coronary artery stenosis in order to provide evidence for prevention of coronary heart disease in flying personnel. \u0000 \u0000 \u0000Methods \u0000By analyzing the computed tomography angiography (CTA), 44 flying personnel clinically suspected as coronary heart disease were divided into coronary artery stenosis group and normal coronary artery group. The comparisons on age, flying aircraft type, flying duties, body mass index (BMI), flying hours, night flying hours, blood lipid level, serum glucose level, histories of hypertension and smoking were conducted between two groups. The Logistic multivariate regression analysis was used for determining risk factors. \u0000 \u0000 \u0000Results \u0000The CTA results indicated 25 cases (56.82%) of coronary artery stenosis and 19 normal cases. The univariate analysis showed the statistical differences on age, flight hours, night flight hours, and the incidences of hypercholesterolemia, hyper low-density lipoprotein cholesterolemia, Hypo high-density lipoprotein cholesterolemia and hypertriglyceridemia between coronary artery stenosis group and coronary artery normal group (χ2=4.429-14.329, P<0.05). The Logistic multivariate regression analysis showed that hyper low-density lipoprotein cholesterolemia (OR=7.026, 95%CI: 1.831-26.959, P<0.05) and night flight hours (OR=4.461, 95%CI: 1.694-11.746, P<0.05) were the independent risk factors of coronary artery stenosis. \u0000 \u0000 \u0000Conclusions \u0000Hyper low-density lipoprotein cholesterolemia and night flying hours are the independent risk factors of coronary artery stenosis in pilots. These hint that the change of circadian rhythms would be an important factor to induce coronary artery stenosis besides the common risk factors. \u0000 \u0000 \u0000Key words: \u0000Coronary artery stenosis; Circadian rhythm; Risk factors; Flying personnel","PeriodicalId":9904,"journal":{"name":"Chinese Journal of Aerospace Medicine","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87557011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-15DOI: 10.3760/CMA.J.ISSN.1007-6239.2018.03-04.014
J. Hao, Haiwang Gao
{"title":"Aeromedical assessment of the pilots with minothalassemia—four cases report","authors":"J. Hao, Haiwang Gao","doi":"10.3760/CMA.J.ISSN.1007-6239.2018.03-04.014","DOIUrl":"https://doi.org/10.3760/CMA.J.ISSN.1007-6239.2018.03-04.014","url":null,"abstract":"","PeriodicalId":9904,"journal":{"name":"Chinese Journal of Aerospace Medicine","volume":"68 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73449726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-15DOI: 10.3760/CMA.J.ISSN.1007-6239.2018.03-04.004
Yishuang Zhang, Haobo Wang, Haitao Fu, Yan Zhang, Huamiao Song, Fei Peng, Haixia Bai, Juan Liu, Y. Liao
Objective To study the practical effect of psychological stress protection training on the pilots in over sea fight missions, and to provide pilots with feasible techniques and training methods for the flight over sea. Methods Forty pilots who performed the flight missions over sea were chosen as the research objects. Their physiological and objective indexes, including heart rate variability (HRV), EEG, self-rated scale of stress degree were collected within half an hour after the flight mission. Then, 30-min psychological stress protection training was carried out. The above indicators were collected again as the training finished. The physiological indexes were compared between the states of pilots before and after psychological stress protection training to assess the training effectiveness. Similar comparison was done between the states of pilots before and after psychological stress protection training in over sea flight simulation. Results ①The HRV analysis in time domain indicated that the percentage of mormal adjacent NN interval difference >50 ms (PNN50) of pilots after psychological stress protection training was significantly higher than that before training(t=2.198, P<0.05). ②The HRV analysis in frequency domain indicated that the normalized HF (HFnorm) of pilots after psychological stress protection training was significantly higher than that before training (t=7.102, P<0.01), the normalized LF(LFnorm) of pilots after psychological stress protection training was significantly lower than that before training (t=7.102, P<0.01). ③The EEG analysis showed that α wave index of pilots after psychological stress protection training was significantly higher than that before training(t=3.909, P<0.01), but β wave index was significantly lower (t=2.966, P<0.01). ④As compared with the data from flight simulation task the values of standard deviations of all NN intervals (SDNN), standard deviation of successive difference between adjacent NN intervals and very low frequency were significantly lower before stress protection training (t=3.149, 2.266, 2.471, P<0.01 or 0.05). β wave index was significantly increased (t=5.067, P<0.01). SDNN, β wave indexes and HFnorm of pilots were significantly increased by stress protection training (t=2.621, 3.062, 4.757, P<0.05 or 0.01) while LFnorm significantly decreased (t=2.621, P<0.05). ⑤The self-rated scale of stress degree of pilots were significantly decreased by the training (t=7.833, P<0.01). Conclusions Psychological stress protection training is an effective way for the pilots performing over sea flight missions. Key words: Stress, psychological; Heart rate; Questionnaires; Training
{"title":"Empirical study of psychological stress protection training for the flight over sea","authors":"Yishuang Zhang, Haobo Wang, Haitao Fu, Yan Zhang, Huamiao Song, Fei Peng, Haixia Bai, Juan Liu, Y. Liao","doi":"10.3760/CMA.J.ISSN.1007-6239.2018.03-04.004","DOIUrl":"https://doi.org/10.3760/CMA.J.ISSN.1007-6239.2018.03-04.004","url":null,"abstract":"Objective \u0000To study the practical effect of psychological stress protection training on the pilots in over sea fight missions, and to provide pilots with feasible techniques and training methods for the flight over sea. \u0000 \u0000 \u0000Methods \u0000Forty pilots who performed the flight missions over sea were chosen as the research objects. Their physiological and objective indexes, including heart rate variability (HRV), EEG, self-rated scale of stress degree were collected within half an hour after the flight mission. Then, 30-min psychological stress protection training was carried out. The above indicators were collected again as the training finished. The physiological indexes were compared between the states of pilots before and after psychological stress protection training to assess the training effectiveness. Similar comparison was done between the states of pilots before and after psychological stress protection training in over sea flight simulation. \u0000 \u0000 \u0000Results \u0000①The HRV analysis in time domain indicated that the percentage of mormal adjacent NN interval difference >50 ms (PNN50) of pilots after psychological stress protection training was significantly higher than that before training(t=2.198, P<0.05). ②The HRV analysis in frequency domain indicated that the normalized HF (HFnorm) of pilots after psychological stress protection training was significantly higher than that before training (t=7.102, P<0.01), the normalized LF(LFnorm) of pilots after psychological stress protection training was significantly lower than that before training (t=7.102, P<0.01). ③The EEG analysis showed that α wave index of pilots after psychological stress protection training was significantly higher than that before training(t=3.909, P<0.01), but β wave index was significantly lower (t=2.966, P<0.01). ④As compared with the data from flight simulation task the values of standard deviations of all NN intervals (SDNN), standard deviation of successive difference between adjacent NN intervals and very low frequency were significantly lower before stress protection training (t=3.149, 2.266, 2.471, P<0.01 or 0.05). β wave index was significantly increased (t=5.067, P<0.01). SDNN, β wave indexes and HFnorm of pilots were significantly increased by stress protection training (t=2.621, 3.062, 4.757, P<0.05 or 0.01) while LFnorm significantly decreased (t=2.621, P<0.05). ⑤The self-rated scale of stress degree of pilots were significantly decreased by the training (t=7.833, P<0.01). \u0000 \u0000 \u0000Conclusions \u0000Psychological stress protection training is an effective way for the pilots performing over sea flight missions. \u0000 \u0000 \u0000Key words: \u0000Stress, psychological; Heart rate; Questionnaires; Training","PeriodicalId":9904,"journal":{"name":"Chinese Journal of Aerospace Medicine","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81697583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-15DOI: 10.3760/CMA.J.ISSN.1007-6239.2018.03-04.008
G. Hua, Cong Wa, Bai Shuang, An-dong Zhao, G. Dalong, Zhihui Yang, H. Zhan
Objective To investigate the sleep quality, emotional state and their relationship for flying personnel so as to provide reference for the targeted aeromedical support. Methods Two hundred and forty-nine flying personnel participated in the anonymous questionnaire surveys, including Pittsburgh sleep quality index (PSQI), self-evaluation of anxiety scale (SAS), self-rating depression scale (SDS), and profile of mood state (POMS). Comparisons of sleep quality among flying personnel, norm and ordinary soldiers were conducted. The correlation between sleep quality and emotional state was analyzed then. Results There were 238 questionnaires returned and the effective rate was 95.6%. The prevalence of sleeping disorders in 238 flying personnel was 36.6%. Their total score of PSQI was (6.79±3.06), which was significantly higher than that of norm and ordinary soldiers (t=14.706, 5.967, P<0.01) and their scores of anxiety and depression were higher than those of the domestic norm (t=4.867, 3.147, P<0.01). In addition, with the total score of PSQI increased the scores on SAS, SDS, tension-anxiety, depression-dejection, anger-hostility, fatigue-inertia and confusion-bewiderment showed upward trend. But the score on vigor-activity was decreased. Correlation analysis showed that the total score of PSQI was positively correlated with the scores on SAS, SDS, tension-anxiety, depression-dejection, anger-hostility, fatigue-inertia and confusion-bewiderment (r=0.549-0.665, P<0.01), and was negatively correlated with vigor-activity (r=-0.417, P<0.01). Conclusions Sleep quality is an important indicator of emotional state. Sleep quality of flying personnel is lower than that of norm and ordinary soldiers and this means the flying personnel are in obviously higher tension and stress state. Key words: Sleep; Emotions; Questionnaires; Military flying personnel
{"title":"Study on the sleep quality and emotional state of flying personnel","authors":"G. Hua, Cong Wa, Bai Shuang, An-dong Zhao, G. Dalong, Zhihui Yang, H. Zhan","doi":"10.3760/CMA.J.ISSN.1007-6239.2018.03-04.008","DOIUrl":"https://doi.org/10.3760/CMA.J.ISSN.1007-6239.2018.03-04.008","url":null,"abstract":"Objective \u0000To investigate the sleep quality, emotional state and their relationship for flying personnel so as to provide reference for the targeted aeromedical support. \u0000 \u0000 \u0000Methods \u0000Two hundred and forty-nine flying personnel participated in the anonymous questionnaire surveys, including Pittsburgh sleep quality index (PSQI), self-evaluation of anxiety scale (SAS), self-rating depression scale (SDS), and profile of mood state (POMS). Comparisons of sleep quality among flying personnel, norm and ordinary soldiers were conducted. The correlation between sleep quality and emotional state was analyzed then. \u0000 \u0000 \u0000Results \u0000There were 238 questionnaires returned and the effective rate was 95.6%. The prevalence of sleeping disorders in 238 flying personnel was 36.6%. Their total score of PSQI was (6.79±3.06), which was significantly higher than that of norm and ordinary soldiers (t=14.706, 5.967, P<0.01) and their scores of anxiety and depression were higher than those of the domestic norm (t=4.867, 3.147, P<0.01). In addition, with the total score of PSQI increased the scores on SAS, SDS, tension-anxiety, depression-dejection, anger-hostility, fatigue-inertia and confusion-bewiderment showed upward trend. But the score on vigor-activity was decreased. Correlation analysis showed that the total score of PSQI was positively correlated with the scores on SAS, SDS, tension-anxiety, depression-dejection, anger-hostility, fatigue-inertia and confusion-bewiderment (r=0.549-0.665, P<0.01), and was negatively correlated with vigor-activity (r=-0.417, P<0.01). \u0000 \u0000 \u0000Conclusions \u0000Sleep quality is an important indicator of emotional state. Sleep quality of flying personnel is lower than that of norm and ordinary soldiers and this means the flying personnel are in obviously higher tension and stress state. \u0000 \u0000 \u0000Key words: \u0000Sleep; Emotions; Questionnaires; Military flying personnel","PeriodicalId":9904,"journal":{"name":"Chinese Journal of Aerospace Medicine","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74552410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-15DOI: 10.3760/CMA.J.ISSN.1007-6239.2018.03-04.022
Bo Jia, Yuan Gao
Objective To review the impact of the special environment of the aeromedical evacuation on the patients with military traumatic brain injury in order to provide reference for the medical practice in the military medical service. Literature resource and selection The related literatures published at home and abroad were selected. Literature quotation Thirty-eight literatures were cited. Literature synthesis Military traumatic brain injury is a common injury during the war. In order to improve the success rate of the treatment of military traumatic brain injury patients, it is very important to ensure the rapid and safe evacuation. Aeromedical evacuation is a medical evacuation method that transported the sick or the wounded by aircrafts. By aeromedical evacuation, the military traumatic brain injury patients can arrive to the rear hospital in the shortest time, get effective medical treatment and guarantee the rehabilitation. However, such special circumstances of aviation medical evacuation as the changes on acceleration, air pressure, temperature, and oxygen concentration that would be experienced in flight, can lead to a series of physiological and pathological changes on the sick and the wounded. These changes may increase the risk of military traumatic brain injury, lead to certain aggravation of the sick and the wounded. Conclusions In the process of evacuating 3traumatic brain injury patients, it is necessary to prevent the occurrence of various unfavorable factors and reduce the occurrence of complications. Key words: Aviation; Craniocerebral trauma; Air ambulance; Aeromedical evacuation
{"title":"Aeromedical evacuation of the patients with military traumatic brain injury","authors":"Bo Jia, Yuan Gao","doi":"10.3760/CMA.J.ISSN.1007-6239.2018.03-04.022","DOIUrl":"https://doi.org/10.3760/CMA.J.ISSN.1007-6239.2018.03-04.022","url":null,"abstract":"Objective \u0000To review the impact of the special environment of the aeromedical evacuation on the patients with military traumatic brain injury in order to provide reference for the medical practice in the military medical service. \u0000 \u0000 \u0000Literature resource and selection \u0000The related literatures published at home and abroad were selected. \u0000 \u0000 \u0000Literature quotation \u0000Thirty-eight literatures were cited. \u0000 \u0000 \u0000Literature synthesis \u0000Military traumatic brain injury is a common injury during the war. In order to improve the success rate of the treatment of military traumatic brain injury patients, it is very important to ensure the rapid and safe evacuation. Aeromedical evacuation is a medical evacuation method that transported the sick or the wounded by aircrafts. By aeromedical evacuation, the military traumatic brain injury patients can arrive to the rear hospital in the shortest time, get effective medical treatment and guarantee the rehabilitation. However, such special circumstances of aviation medical evacuation as the changes on acceleration, air pressure, temperature, and oxygen concentration that would be experienced in flight, can lead to a series of physiological and pathological changes on the sick and the wounded. These changes may increase the risk of military traumatic brain injury, lead to certain aggravation of the sick and the wounded. \u0000 \u0000 \u0000Conclusions \u0000In the process of evacuating 3traumatic brain injury patients, it is necessary to prevent the occurrence of various unfavorable factors and reduce the occurrence of complications. \u0000 \u0000 \u0000Key words: \u0000Aviation; Craniocerebral trauma; Air ambulance; Aeromedical evacuation","PeriodicalId":9904,"journal":{"name":"Chinese Journal of Aerospace Medicine","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78062434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-15DOI: 10.3760/CMA.J.ISSN.1007-6239.2018.03-04.010
Chuanyin Zhang, M. Deng, Fang Lei, Qiang Li
Objective To provide better health management for pilots by retrospective study of the disease spectrum of China Southern pilots in 2017. Methods The retrospective study method was applied to estimate the detection rate of related disease of 1 826 pilots who participated in the physical examination in 2017. The detection rates of related diseases were compared among 4 age groups (20-29 yrs, 30-39 yrs, 40-49 yrs and >50 yrs). Results Among 1 826 pilots, the top ten diseases were hyperlipidemia, fatty liver, hyperuricemia, presbyopia, gallbladder polyp, ametropia, hearing loss, obesity, vision loss and renal cysts. Among different age groups, the detection rates of hyperlipidemia, fatty liver, hyperuricemia, presbyopia, gallbladder polyp, ametropia, hearing loss, obesity, vision loss, renal cysts and hypertension were significantly different (χ2 =10.456-193.402, P<0.05). And the detection rates of fatty liver, hearing loss, obesity, renal cysts and hypertension increased with age significantly. Conclusions The risk factors of cardiovascular disease in pilots are prominent. And the detection rates of the metabolic related diseases and the decreased audio-visual function are high in them. Controlling the body weight, uric acid and blood lipid would be critical to pilot′s health management. Key words: Physical examination; Prevalence; Hyperlipidemia; Fatty Liver; Spectrum of disease; Pilots
{"title":"Analysis of the disease spectrum of airline pilots in 2017","authors":"Chuanyin Zhang, M. Deng, Fang Lei, Qiang Li","doi":"10.3760/CMA.J.ISSN.1007-6239.2018.03-04.010","DOIUrl":"https://doi.org/10.3760/CMA.J.ISSN.1007-6239.2018.03-04.010","url":null,"abstract":"Objective \u0000To provide better health management for pilots by retrospective study of the disease spectrum of China Southern pilots in 2017. \u0000 \u0000 \u0000Methods \u0000The retrospective study method was applied to estimate the detection rate of related disease of 1 826 pilots who participated in the physical examination in 2017. The detection rates of related diseases were compared among 4 age groups (20-29 yrs, 30-39 yrs, 40-49 yrs and >50 yrs). \u0000 \u0000 \u0000Results \u0000Among 1 826 pilots, the top ten diseases were hyperlipidemia, fatty liver, hyperuricemia, presbyopia, gallbladder polyp, ametropia, hearing loss, obesity, vision loss and renal cysts. Among different age groups, the detection rates of hyperlipidemia, fatty liver, hyperuricemia, presbyopia, gallbladder polyp, ametropia, hearing loss, obesity, vision loss, renal cysts and hypertension were significantly different (χ2 =10.456-193.402, P<0.05). And the detection rates of fatty liver, hearing loss, obesity, renal cysts and hypertension increased with age significantly. \u0000 \u0000 \u0000Conclusions \u0000The risk factors of cardiovascular disease in pilots are prominent. And the detection rates of the metabolic related diseases and the decreased audio-visual function are high in them. Controlling the body weight, uric acid and blood lipid would be critical to pilot′s health management. \u0000 \u0000 \u0000Key words: \u0000Physical examination; Prevalence; Hyperlipidemia; Fatty Liver; Spectrum of disease; Pilots","PeriodicalId":9904,"journal":{"name":"Chinese Journal of Aerospace Medicine","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86368475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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