复杂选择反应时测验在飞行员飞行能力评定上的效度分析

目的　探讨复杂选择反应时测验对飞行能力评价的意义和影响该任务成绩的因素,为飞行员心理选拔研究提供技术指标。　方法　１０９ 名现役新飞行员和等级歼（强）击机、运输（轰炸）机飞行员,完成复杂选择反应时测验和飞行技术水平多效标系统评价。　结果　①复杂选择反应时测验平均反应时间与效标Ｆ５（空中打靶能力）有非常显著性相关,正确反应数与效标Ｆ２（快速反应能力）同样有显著性相关,两个指标与效标Ｆ７（飞行能力综合评价）均有显著性相关,特别是在控制３ 项因素条件下,其相关更显著;②歼（强）击机与运输（轰炸）机飞行员在测验指标上无显著性差异;本科学历飞行员测验成绩与大专学历飞行员有显著性差异;不同年龄组飞行员间正确反应数和单位时间正确率两指标有显著性差异。　结论　复杂选择反应时测验是评价飞行员实际飞行能力、飞行中空中打靶能力和快速反应能力的较好指标     

战斗机飞行员心理品质测量方法研究

目的建立战斗机飞行员心理品质测量方法和标准。方法随机抽取３０８名男性现役战斗机飞行员,年龄２３～４４岁,平均３１．８±４．７岁。飞行时间３００～２６００ｈ,平均１２１２．９７±５４０．６８ｈ。机种为歼教－５、强－５、歼－６、歼－７、歼－８等。采用纸笔测验（含７项分测验）、人机对话测验（含４项分测验）和个性测验。收集受试者９级分飞行训练绩效。结果１９项指标的数据均呈正态分布（｜ＳＫ｜≤０．６７）,具有高区分度（ＣＶ≥８．０）,复测信度＞０．８０。８项指标的效度系数具有统计学意义（Ｐ＜０．０５）。心理测量综合指标与飞行训练绩效有比较密切的关系（ｒ＝０．３６,Ｐ＜０．０１;Ｃｈｉ－ＳｑｕａｒｅＶａｌｕｅ＝３５．９８,ｄｆ＝４,Ｐ＜０．００１）。心理测量选优符合率为８５．７％（５４／６３）。结论根据本研究筛选的指标,有望建立简便实用的计算机化的战斗机飞行员心理品质测量方法和标准。     

我院45年歼击机飞行员心血管疾病停飞回顾调查

研究歼击机飞行员因心血管疾病停飞构成比变化规律 ,对我们制定相应的航空卫生保障措施、降低歼击机飞行员停飞率有着十分重要的意义。1　临床资料我院 1 95 6年 1月至 2 0 0 0年 1 2月因心血管疾病停飞男性歼击机飞行员 369人 ,飞行机种 :杜 - 2 ,米格 - 1 5 ,歼 - 5 ,歼 - 6,歼 - 7,歼 - 8型歼击机。平均年龄( 35± 9)岁 ,平均飞行时间 ( 91 7± 71 0 ) h。歼击机飞行员心血管疾病停飞最常见的 3类疾病为高血压病 ( 35 .0 % ) ,心律失常 ( 34.4% ) ,冠心病( 1 9.2 % )。心律失常停飞的前 5位疾病是心脏传导阻滞 ( 2 9.9% ) ,心动过速 ( 1 …     

两种机型飞行模拟器对飞行员工作能力的影响

目的 探讨两种机型飞行模拟器对飞行员工作能力的影响。方法 检测60名飞行员分别在歼-6、歼-7两种飞行模拟器上完成相同飞行课目时的飞行成绩、附加任务成绩和心率,比较分析此二种模拟器对飞行员工作能力的影响。结果 飞行员在完成双重任务时,操纵歼-7飞行模拟器的成绩明显高于歼-6(P<0.01)。歼-7模拟器飞行中的信息处理速度快于歼-6模型器(p<0.05)。飞行中的心率明显快于基础心率(p<0.01)。结论歼-7型飞行模拟器对飞行员工作能力的影响小于歼-6型飞行模拟器。     

飞行人员腹股沟疝31例治疗体会

我院从 1984年 1月至 1999年 12月共收治飞行人员腹股沟疝 31例 (30人 ) ,所有患者均经手术治疗痊愈 ,临床随访 1～ 15年 ,效果良好。现报告如下。一、对象与方法1.对象 :30名男性飞行人员 ,年龄18～ 45岁。其中飞行员 16名 (17例 ) ,机种为歼教机 (歼教 - 5、歼教 - 6 )、强击机(强 - 5 )、轰炸机 (轰 - 5 )和运输机 (运 - 5、运 - 7) ,飞行时间 110 0～ 36 0 0 h;预校学员 4名 ;飞行学院学员 10名 ,机种为初教 - 6、歼教 - 5。腹股沟疝 31例 ,病程 2 d～ 5年 ,其中右腹股沟疝 2 1例 ,左腹股沟斜疝 8例 ,右腹股沟斜疝嵌顿 1例 ,左腹股沟斜…     

高性能战斗机飞行员血清铁浓度和红细胞指标变化分析

目的 探讨高性能战斗机飞行员血清铁浓度和红细胞指标变化的机制. 方法 将来我院疗养的39名高性能战斗机飞行员作为观察组,72名歼-7、歼-8和强-5飞行员作为对照组,并比较两组飞行员血清铁浓度、红细胞指标的变化. 结果 高性能战斗机飞行员较对照组飞行员血清铁浓度、血红蛋白量、红细胞平均血红蛋白含量、平均红细胞血红蛋白浓度均降低,且有统计学意义(t=3.50～7.95,P<0.01);而红细胞计数升高,且有统计学意义(t=3.01,P<0.01). 结论 高性能战斗机飞行员因承受较大的加速度、缺氧、热负荷及应激,可能会引起血清铁浓度降低,红细胞计数代偿性升高,从而导致血红蛋白、红细胞平均血红蛋白含量、平均红细胞血红蛋白浓度下降,缺氧耐受力降低.因此.及早采取干预措施,及时减轻飞行疲劳和提高飞行耐力,对于保障飞行安全有重要意义.     

2015—2019年歼(强)击机飞行员医学停飞对比分析

目的 对比分析歼(强)击机飞行员医学停飞情况,为临床有针对性地预防飞行员高发疾病提供依据,为部队日常航卫保障提供方向.方法 统计2015年1月—2019年12月31例经空军特色医学中心航空医学鉴定为飞行不合格歼(强)击机飞行员的临床资料,对其疾病情况、涉及专科、年龄情况进行分类分析,并与2006—2012年歼击机飞行员...     

航空医学研究中的对象选择要求

医学科研设计的一项重要原则是纯化对象——挑选的受试者尽量一致。样本不同质,杂因干扰多,观察指标及试验效应必不突出,便难以达到研究目的。本刊习称的"飞行人员"(空中勤务人员)包括驾驶员、领航员、通讯员、空中机械师和飞行乘务员等,他们的工作方式、性质不同,选拔时的体检标准不一,成长过程各异,是一个复杂的群体。把他们混在一起作为研究对象是不妥当的。即使都是"飞行员"(驾驶员),轰炸机、运输机、直升机飞行员与歼(强)击机的飞行员工作条件也大不相同,飞行时间也不宜混合统计。故除研究特定职务的飞行人员外,做军事航空医学研究时以歼(强)击机飞行员作对象更为得当。对照组也应遵从"齐同对比"原     

歼(强)击机飞行员心脏瓣膜生理性返流调查分析

目的 观察歼(强)击机飞行员心脏瓣膜生理性返流的发生情况.方法 100例歼(强)击机飞行员为观察对象,按机型不同分为高性能机组56例和普通机组44例,进行超声心动图检查,观察瓣膜运动及血流情况,测量心脏结构指标并计算其心功能.结果 100例飞行员中,共检出各种瓣膜生理性返流55例(55.00%),其中高性能机组32例(...     

飞行员乙肝病毒标志物阳性的医学鉴定

一、临床资料 1.病例情况:2006年1月以来住我院的乙肝病毒标志物阳性飞行员45例,男性,年龄22～49岁.飞行机种包括歼-7、歼-6、强-5、运-5、高教-8等.飞行时间50～2500 h.因各种疾病(包括腰椎病、颈椎病、脂肪肝、体育外伤、慢性胃炎、上呼吸道感染,副鼻窦炎及荨麻疹等)住院者39例,因健康大体检人院者6例.45例均无相关性不适主诉.     

Knee injury and Osteoarthritis Outcome Score (KOOS) - validation of a Swedish version

The Knee injury and Osteoarthritis Outcome Score (KOOS) is a self-administered instrument measuring outcome after knee injury at impairment, disability, and handicap level in five subscales. Reliability, validity, and responsiveness of a Swedish version was assessed in 142 patients who underwent arthroscopy because of injury to the menisci, anterior cruciate ligament, or cartilage of the knee. The clinimetric properties were found to be good and comparable to the American version of the KOOS. Comparison to the Short Form-36 and the Lysholm knee scoring scale revealed expected correlations and construct validity. Item by item, symptoms and functional limitations were compared between diagnostic groups. High responsiveness was found three months after arthroscopic partial meniscectomy for all subscales but Activities of Daily Living.     

The acutely limping child

Acute limping may be the result of multiple pathologies in children. The differential diagnosis varies based on the age of the child. Irrespective of age, the initial imaging work-up includes AP and frog leg radiographs of the pelvis and ultrasound; MRI may sometimes be helpful. In children less than 3 years, infections and trauma are most frequent. MRI is the imaging modality of choice when osteomyelitis is clinically suspected. Between the ages of 3 and 10 years, transient synovitis of the hip and Legg-Calvé-Perthes disease are main considerations but infection, inflammation and focal bony lesions are also considered. In children over 10 years, slipped capital femoral epiphysis also is considered.     

Do Balance Board Training Programs Reduce the Risk of Ankle Sprains in Athletes?

Introduction Ankle sprains are the most common musculo-skeletal injury that occurs in athletes,particularly in sports that require jumping and landing on one foot such as soccer,and basketball(1-4).These injuries often result in significant time loss from participation,long-term disability,and have a major impact on health care costs and resources(5-8).     

High Intensity Interval Training:New Insights

KEY POINTS ·High-intensity interval training(HIT)is characterized by repeated sessions of relatively brief，intermittent exercise.often performed with an“a11 out”effort or at an intensity close to that which elicits peak oxygen uptake(i.e.，≥90%of VO2 peak).     

Endovascular management of carotid-cavernous fistulas

Objective To investigate endovascular treatment of traumatic direct carotid-cavernous fistulas （CCF） and their complications such as pseudoaneurysms. Methods： Over a five-year period, 22 patients with traumatic direct CCFs were treated endovascularly in our institution. Thirteen patients were treated once with the result of CCF occluded, 8 twice and 1 three times. Treatment modalities included balloon occlusion of the CCF, sacrifice of the ipsilateral internal carotid artery with detachable balloon, coll embolization of the cavernous sinus and secondary pseudoaneurysms, and covered-stem management of the pseudoaneurysms. Results All the direct CCFs were successfully managed endovascularly. Four patients developed a pseudoaneurysm after the occlusion of the CCF with an incidence of pseudoaneurysm formation of 18.2% （4/22）. A total number of 8 patients experienced permanent occlusion of the ICA with a rate of ICA occlusion reaching 36.4% （8/22）. Followed up through telephone consultation from 6 months to 5 years, all did well with no recurrence of CCF symptoms and signs. Conclusion Traumatic direct CCFs can be successfully managed with endovascular means. The pseudoaneurysms secondary to the occlusion of the CCFs can be occluded with stent-assisted coiling and implantation of covered stents.     

Developmental validation of the PowerPlex(®) ESI 16 and PowerPlex(®) ESI 17 Systems: STR multiplexes for the new European standard

In response to the ENFSI and EDNAP groups’ call for new STR multiplexes for Europe, Promega^® developed a suite of four new DNA profiling kits. This paper describes the developmental validation study performed on the PowerPlex^® ESI 16 (European Standard Investigator 16) and the PowerPlex^® ESI 17 Systems. The PowerPlex^® ESI 16 System combines the 11 loci compatible with the UK National DNA Database^®, contained within the AmpFlSTR^® SGM Plus^® PCR Amplification Kit, with five additional loci: D2S441, D10S1248, D22S1045, D1S1656 and D12S391. The multiplex was designed to reduce the amplicon size of the loci found in the AmpFlSTR^® SGM Plus^® kit. This design facilitates increased robustness and amplification success for the loci used in the national DNA databases created in many countries, when analyzing degraded DNA samples. The PowerPlex^® ESI 17 System amplifies the same loci as the PowerPlex^® ESI 16 System, but with the addition of a primer pair for the SE33 locus. Tests were designed to address the developmental validation guidelines issued by the Scientific Working Group on DNA Analysis Methods (SWGDAM), and those of the DNA Advisory Board (DAB). Samples processed include DNA mixtures, PCR reactions spiked with inhibitors, a sensitivity series, and 306 United Kingdom donor samples to determine concordance with data generated with the AmpFlSTR^® SGM Plus^® kit. Allele frequencies from 242 white Caucasian samples collected in the United Kingdom are also presented. The PowerPlex^® ESI 16 and ESI 17 Systems are robust and sensitive tools, suitable for the analysis of forensic DNA samples. Full profiles were routinely observed with 62.5 pg of a fully heterozygous single source DNA template. This high level of sensitivity was found to impact on mixture analyses, where 54–86% of unique minor contributor alleles were routinely observed in a 1:19 mixture ratio. Improved sensitivity combined with the robustness afforded by smaller amplicons has substantially improved the quantity of data obtained from degraded samples, and the improved chemistry confers exceptional tolerance to high levels of laboratory prepared inhibitors.     

Prevalence and severity of hip and groin pain in sub‐elite male football: a cross‐sectional cohort study of 695 players

The purpose of this study was twofold: (a) to investigate the prevalence of hip and groin pain in sub‐elite male adult football in Denmark and (b) to explore the association between prevalence and duration of hip and groin pain in the previous season with the Copenhagen Hip and Groin Outcome Score (HAGOS) in the beginning of the new season. In total 695 respondents from 40 teams (Division 1–4) were included. Players completed in the beginning of the new season (July–Sept 2011) a self‐reported paper questionnaire on hip and/or groin pain during the previous season and HAGOS. In total 49% (95% CI: 45–52%) reported hip and/or groin pain during the previous season. Of these, 31% (95% CI: 26–36%) reported pain for >6 weeks. Players with the longest duration of pain during the previous season had the lowest HAGOS scores, when assessed at the beginning of the new season, P < 0.001. This study documents that half of sub‐elite male adult football players report pain in the hip and/or groin during a football season. The football players with the longest duration of pain in previous season displayed the lowest HAGOS scores in the beginning of the new season.     

Bronchial stump fistula :treatment with covered retrievable hinged metallic stents-preliminary clinical experience

Objective To evaluate the preliminaily clinical efficacy and retrievability of a retrievable hinged covered metallic stent in the treatment of the bronchial stump fistula （BSF）. Methods Between April 2003 and March 2005, 8 patients with bronchial stump fistula after pneumonectomy or lobectomy were treated with two types （A and B） of retrievable hinged covered metallic stents. Type A stent was placed in 6 patients and type B in 2 under fluoroscopic guidance. The stent was removed with a retrieval set when BSF was healed or complications occurred. Results Stent placement in the bronchial tree was technically successful in all patients, without procedure-related complications. Immediate closure of the BSF was achieved in all patients after the procedure. Stents were removed from all patients but one. Removal of the stents was difficult in two patients due to tissue hyperplasia. Patients were followed up for 6 - 21 months. Placement of the stents remained stable in all patients except one due to severe cough. Permanent closure of BSF was achieved in 7 （87.5%） of 8 patients. Conclusion Use of a retrievable hinged covered expandable metallic stent is a simple, safe, and effective procedure for closure of the BSF. Retrieval of the stent seems to be feasible. （J Intervent Radiol, 2007, 16： 253-257）