飞行员直立位前后心率变异时域与频域的变化

为了探讨体位变化对心血管自主神经调节机制及心率变异（ＨＲＶ）特征的影响，对６０名健康男性战斗机飞行员进行了直立位（９０°）前后短时（５ｍｉｎ）时域与频域ＨＲＶ指标相关性研究，结果显示：直立位前后短时ＨＲＶ指标（包括时域和频域）存在明显差异，某些短时ＨＲＶ时域与频域指标，如卧位，５ｍｉｎＲ－Ｒ间期均值（ＭＲＲ５）与高频（ＨＦ）呈明显正相关，与高频／低频（ＨＦ／ＬＦ）呈明显负相关；直立位；ＭＲＲ５与低

Analysis of Time Domain and Frequency Domain Heart Rate Variability in Fighter Pilot before and after Upright Tilt.

Effects of upright tilt on mechanism of autonomic nervous regulation of cardiovascular system and characteristics of heart rate variability (HRV) were observed in sixty healthy male pilots. Relation between time domain and frequency domain indexes of short-time HRV (5 min) were analysised before and after upright tilt.The results showed that there are significant difference in short time HRV parameters before and after upright tilt. Significant relationship was formed between time domain and frequency domain indexes of HRV. It suggests that time domian and frequency domian HRV analysis is capable of revealing certain informations embeded in a short series of R-R intervals and can help to evaluate the status of autonamic regulation of cardiovascular founction in pilots.