平行秋千摆动刺激中的心率变异分析  

Analysis of Heart Rate Variability during Parallel Swinging.

作　　者：李伟刚[1] 闫晓霞[1] 裴静琛[1] 

机构地区：[1]航天医学工程研究所,北京100094

出　　处：《航天医学与医学工程》1999年第5期323-327,共5页Space Medicine & Medical Engineering

摘　　要：目的 观察飞行员在平行秋千摆动前、中、后反映心脏植物神经调节功能的心率变异性（ Ｈ Ｒ Ｖ） 特点，探讨以此评价线性加速度作用下前庭－ 植物神经反应性的可能性。方法 记录３７ 名飞行员在秋千摆动前、中、后的连续心电图，进行频谱分析并计算低频成分（ Ｌ Ｆ） 和高频成分（ Ｈ Ｆ）之比值。对被试者中 Ｌ Ｆ／ Ｈ Ｆ 值在不同摆动阶段变化类型及分布与耐受摆动时间的关系进行初步分析。结果摆动中的 Ｌ Ｆ 明显降低， Ｈ Ｆ 明显增高， Ｌ Ｆ／ Ｈ Ｆ 值明显低于摆动前和摆动后（ Ｐ＜ ０ ．０１） 。结论（１） 平行秋千摆动中迷走神经活动显著增强，反映迷走神经兴奋水平的 Ｈ Ｆ 应作为前庭耐力评价的重要指标。（２） 平行秋千摆动前、中、后心脏植物神经调节功能具有多样性和复杂性。Objective To study the pilots' heart rate variability (HRV) characteristic before,during and after parallel swing and the possibility of evaluating vestibule vegetative nervous reaction under linear acceleration. Method 37 healthy male pilots participated in parallel swing test.Dynamic ECG was recorded for 15 min before,during and after swing,using model MR 4500 Holter recorder.All spectra were estimated from 15 min HRV by autoregressive (AR) modeling method,the model order (8～15) was chosen using automatic program.The ratio of lower frequency(LF) to high frequency(HF) power of HRV spectrum (LF/HF) was computed.The relation between change of those ratios in different swing stage and swing time was analysed. Result Ratio of LF to HF during swing was markedly lower than those of before and after swing(P<0.01). Conclusion The vagal nervous activity was markedly increased during swing.There were complexity and versatility in the heart automatic nervous regulation before,during and after swing.

关 键 词：飞行员 身体摆动实验 心率变异性 前庭刺激 

分 类 号：R852.3[医药卫生—航空、航天与航海医学]