【摘要】 目的通过记录和分析心率变异性(HRV)的时域和频域指标,探讨特质焦虑者的自主神经功能特点。方法根据特质焦虑量表将100名被试分为高、低特质焦虑组;通过记录两组被试在安静状态下的脉搏血容积(BVP),采集HRV的时域和频域数据并分析比较。结果①高特质焦虑组的时域指标rMSSD、PNN50均低于低特质焦虑组(t=-3.041,-3.626;P<0.01),时域指标SDNN边缘低于低特质焦虑组(t=-1.824,P=0.074);②高特质焦虑组频域指标中HF值显著低于低特质焦虑组(t=-2.710,P<0.01),LF/HF显著高于低特质焦虑组(t=3.395,P<0.01),但LH值与低特质焦虑组差异不显著(t=0.763,P>0.05)。结论特质焦虑者的交感与副交感神经活动失衡,以迷走神经活动下降为主,并伴随一定程度的交感神经功能增高。更多还原

【Abstract】 Objective To investigate the functional features of autonomic nervous of patients with trait anxiety by analyzing the time and frequency indexes of heart rate variability(HRV).Methods According to the trait anxiety scale scores,100 subjects were divided into two groups:High trait anxiety group(HT)and low trait anxiety group(LT);recording the blood volume pulse(BVP)of both groups under quiet condition,collecting HRV in time and frequency data.Results ① Two time indexes(rMSSD,PNN50)of the HT were significantly lower than those of the LT(t=-3.041,3.626;P<0.01),one time index(SDNN)of HT was lower than LT(t=-1.824,P=0.074);② One frequency index(HF)of the HT was significantly lower than the LT(t=-2.710,P<0.01),one frequency index(LF/HF)was significantly higher than the LT(t=3.395,P<0.01),but one frequency index(LF)of two groups was no significant difference(t=0.763,P>0.05).Conclusion The activity between sympathetic and parasympathetic of patients with trait anxiety is imbalance,the activity of the vagus nerves is significantly decreased,the activity of the sympathetic is increased.更多还原