不同心理弹性个体急性应激时心率变异性的特征及变化  

Changes of the individual heart rate variability under stress for college students with different level of re- silience

作　　者：左昕[1,2] 彭李[1] 杨安强 李敏[1] 汪金生 王振武 于永菊[1] 陈珑[1] 

机构地区：[1]第三军医大学心理学院军事心理学教研室,重庆400038 [2]海军92390部队医院 [3]61876部队

出　　处：《中华行为医学与脑科学杂志》2013年第4期345-347,共3页Chinese Journal of Behavioral Medicine and Brain Science

基　　金：基金项目：国家自然科学基金资助项目（31170994）;军队心理卫生科研课题（12XLZ212）;军队“十二五”面上项目（CWSllJ049）

摘　　要：目的研究不同心理弹性水平个体在特里尔社会应激（TSST）时心率变异性（HRV）的变化情况。方法采用心理弹性量表（CD-RISC）在某军医大学对160名大学生进行筛查，根据测验结果选取高心理弹性组（n。=11）和低心理弹性组（n：=11）共22人人组TSST试验，全部为男性。按照TSST标准化试验程序进行，被试在TSST试验前、试验后的1和25rain时完成3次心率（HR）和HRV的采集。结果①低心理弹性组的HR和HRV各指标值均较低，其中HRV的VLF、LF和HF功率显著低于高心理弹性组（P〈0．01）；②与基线值相比较，高、低弹性组心率在TSST试验后1min时达到最高峰后逐渐降低；低弹性组心率[（6．09±8．87）~／min]在试验后1rain时显著增高（P〈0．05）。高弹性组HRV的VLF和HF功率在试验后1rain时先降低，25min时显著增高（VLF=（15．61±11．81）Hz，HF=（5．48±7．99）Hz，P〈0．05）；LF功率[（84．92±13．30）Hz]在试验后1rain时显著增高，25min时达到最高峰[（89．72±14．93）Hz，P〈0．01]；LF／HF比值在试验后1min时[（3．43±0．76）Hz]先增高，后逐渐降低（1．26±O．23，P〈0．01）。低弹性组HRV的VLF、LF和HF功率在试验后1rain时显著增高，VLF和LF功率在25rain时继续增高达到最高峰，HF功率在25min时显著降低达到最低值（P〈0．01）；LF／HF比值在试验后1min时（0．45±O．27）先降低，后逐渐增高（1．91±O．40，p〈0．01）。结论在应激状态下，心理弹性高的个体有更高的HRV，有利于个体更有效地应激应对和更陕地恢复。Objective To study the changes of heart rate variability （HRV） in the Trier Social Stress Test （TSST） among the college students with different level of resilience. Methods Connor-Davidson Resilience Scale （CD-RISC） were used to test the resilience of 160 students in a Military Medical University, and according to the test results, 11 male students with high resilience and l 1 students with low resilience were selected to partici- pate the TSST experiment. The test were done according to the TSST standard procedures, heart rate （HR） and HRV were recorded 3 times （ before and after the 1st and 25th minutes of TSST）. Results （~）The low-resilience group＇s HR and HRV index were lower （including HRV VLF,LF and HF） than those in high resilience group（P 〈 0.01 ）. （~）Compare with the HR baseline values ,the HR peaked within the 1st minute of TSST and gradually re- duced. The HR （（6.09 ± 8.87 ）/ruin） evidently increased in the low-resilience group at the 1st minute （P 〈 0.05 ）. The VLF and HF powers of HRV in the high-resilience group were lower on the 1 st minute and significantly higher on the 25th minute （ VLF = （ 15.61 ±11.81 ） Hz, HF = （5.48 ± 7.99） Hz, P 〈 0.05）. The LF （ （ 84.92 ± 13.30） Hz） power was significantly higher on the 1st minute and peaked on the 25th minute （ （ 89.72± 14.93 ） Hz, P〈0.01 ）. The LF/HF ratio （3.43 ±0.76） increased on the 1st minute and then gradually decreased （1.26 ± 0.23, P 〈 0.01 ）. The VLF, LF and HF powers of HRV in the low-resilience group were significantly higher on the 1 st minute. The VLF and LF power continued to increase and they peaked on the 25th minute,whereas the HF power significantly decreased to a minimum on the 25th minute （P〈0.01）. Within the 1st minute of the experi- ment, the LF/HF ratio （0.45 ±0.27 ） decreased and then gradually increased （ 1.91 ± 0.40, P 〈 0.01 ）. Conclu- sion Under stress,individuals with higher resilience have higher HRV to cop

关 键 词：心率变异性 心理弹性 应激 

分 类 号：B84[哲学宗教—心理学] G44[哲学宗教—发展与教育心理学]