Sato N, Kamada T, Miyake S, Akatsu J, Kumashiro M, Kume Y
Department of Industrial Engineering, Faculty of Science and Technology, Kinki University, Higashi-Osaka, Osaka, Japan.
J Psychosom Res. 1998 Aug;45(2):159-69. doi: 10.1016/s0022-3999(97)00295-x.
This study investigated changes in autonomic nervous activities due to psychological stress in Type A females. Eight Type A and eight Type B females performed a psychomotor task for 30 minutes. Power spectral analysis of heart rate variability (HRV) was used to examine the autonomic nervous activities. Results showed the low frequency (LF) component and LF/HF ratio in Type A females increased after the onset of the task. There were no significant differences in task performance between Type A and Type B females. The subjective mental workload increased gradually in Type A females during the tasks, whereas in Type B females this parameter did not change in a consistent manner. The results suggest that the sympathetic nervous system in Type A females was more stimulated by the task and Type A females felt a greater subjective mental workload than did Type B females.
本研究调查了A型女性因心理压力导致的自主神经活动变化。8名A型女性和8名B型女性进行了30分钟的心理运动任务。采用心率变异性（HRV）功率谱分析来检测自主神经活动。结果显示，任务开始后，A型女性的低频（LF）成分和LF/HF比值增加。A型和B型女性在任务表现上没有显著差异。在任务过程中，A型女性的主观心理负荷逐渐增加，而B型女性这一参数没有呈现一致变化。结果表明，该任务对A型女性交感神经系统的刺激更大，且A型女性比B型女性感受到更大的主观心理负荷。
