短时程心率变异性对评估伞兵心理应激反应的价值

The value of assessing mental stress of the airborne forces by short-term heart rate variability

目的探讨跳伞前伞兵心理应激反应对短时程心率变异性的影响,为使用心率变异性指标评估跳伞心理应激强度提供方法和生理依据。方法参加跳伞训练的伞兵30名,跳伞当天佩戴飞行员飞行生理参数记录检测仪连续动态记录心电信号,对其在驻地、机场、机上的短时程心率变异性时域参数、频域参数进行分析。结果与驻地检测结果相比,伞兵在机场和机上心率变异性时域指标RMSSD、HRVI和频域指标VLF、HF、HFNU、TP出现降低,机上检测值显著低于驻地检测值(P<0.01);而频域指标LFNU、LF/HF出现升高,机上检测值显著高于驻地检测值(P<0.01)。结论跳伞前心理应激反应对短时程心率变异性指标有显著影响,短时程心率变异性指标可以作为评估跳伞前心理应激水平的重要参考指标。

Objective To explore the effect of mental stress on short-term heart rate variability of the airborne forces before jump and the possibility of using it as an index and physiological evidence for evaluating mental stress reaction.Methods Short-term heart rate variability including time domain and frequency domain parameters was analyzed in thirty airborne forces at the camp,airport,and on the plane respectively in a parachute jump day.Results The indices of time domain of RMSSD,HRVI and the subscripts of frequency domain of VLF,HF,HFNU,and TP on the plane were significantly lower than those of at the camp（P0.01）,while LFNU and LF/HF were higher（P0.01）.Conclusion The effects of mental stress on short-term heart rate variability indices were significant before the airborne forces parachuting.Short-term heart rate variability may be used as an important reference index for evaluation of mental stress.