CAJ | 학술논문

目的探讨高气压变化对年轻飞行员心率(HR)及短程心率变异性(HRV)的影响.方法利用高压舱结合动态心电图对30名年轻飞行员进行临床试验,记录升压前、升压过程中、高压状态、减压过程中及减压后各5 min的平均HR及所有正常R-R间期标准差(SDNN)、相邻正常R-R间期差值均方根(RMSSD)、相邻R-R间期差异大于50 ms的百分数(PNN_(50))3项短程HRV时域指标,并进行统计学处理.结果气压升高可使HR减慢,升压前76.56±12.33次/min,升压过程中67.25±10.21次/min,高压状态65.06±7.02次/min;随着大气压的恢复,HR逐渐加快,但未恢复到升压前水平;主要反映交感和迷走神经总张力的HRV指标SDNN和主要反映迷走神经张力的RMSSD、PNN_(50)基本上随着环境大气压升高而升高,随着大气压降低而降低.结论高气压的变化对年轻飞行员的HR和短程HRV有较明显的影响,在飞行员的选拔和训练时应予以重视.
목적 탐토고기압변화대년경비행원심솔(HR)급단정심솔변이성(HRV)적영향.방법 이용고압창결합동태심전도대30명년경비행원진행림상시험,기록승압전、승압과정중、고압상태、감압과정중급감압후각5 min적평균HR급소유정상R-R간기표준차(SDNN)、상린정상R-R간기차치균방근(RMSSD)、상린R-R간기차이대우50 ms적백분수(PNN_(50))3항단정HRV시역지표,병진행통계학처리.결과 기압승고가사HR감만,승압전76.56±12.33차/min,승압과정중67.25±10.21차/min,고압상태65.06±7.02차/min;수착대기압적회복,HR축점가쾌,단미회복도승압전수평;주요반영교감화미주신경총장력적HRV지표SDNN화주요반영미주신경장력적RMSSD、PNN_(50)기본상수착배경대기압승고이승고,수착대기압강저이강저.결론 고기압적변화대년경비행원적HR화단정HRV유교명현적영향,재비행원적선발화훈련시응여이중시.
Objective To investigate the effect of high pressure change to heart rate (HR) and short-term heart rate variability (HRV) on young pilots. Methods HR, standard deviation of the NN interval (SDNN), root mean square of the squared differences of successive NN intervals (RMSSD), and percentage of the difference of successive NN interval >50 ms (PNN_(50)) in 5 minitues of 30 young pilots were recorded by dynamic electrocardiogram before, in and at constant pressurization, as well as in decompression and after decompression in a hyperbaric chamber. Data were statistically analyzed. Results Pressurization might cause HR decreased. HR varied from 76.56±12.33 bpm before pressurization, 67.25±10.21 bpm during onset of pressurization, to 65.06 ±7.02 bpm at peak. With the return to normal atmospheric pressure, HR increasedly recovered but never to the level before pressurization. Such HRV parameters as SDNN that mainly reflected the combined sympathetic and vagal tone, and RMSSD and PNN_(50) that indicted vagal tone, were varied with atmospheric pressure. Conclusions Change of atmospheric pressure may significantly affect young pilots' HR and short-term HRV, and this would be cared in pilot selection and training.