Establishment of objective index markers for the mental health problem in workers

为了明确疲劳状态的客观特征，我们调查了受东日本大地震影响的A市一所学校的207名大学生和430名工作人员以及日本西部一所学校的304名工作人员的主观症状，自主神经功能，体力活动和睡眠参数。大学生自主神经功能与疲劳症状、体力活动、睡眠参数有关。此外，对一所学校的工作人员进行的研究表明，A市和西日本的工作人员不仅有严重的疲劳症状，而且交感神经功能亢进，清醒时活动减少，清醒时小睡次数增加。这些数据表明，自主神经功能与疲劳症状，体力活动和睡眠参数明显相关。并且可以通过使用这些客观指标标记来制定疲劳状态的诊断算法。

To clarify the objective features of the fatigue state, we investigated subjective symptoms, autonomic nerve function, physical activities, and sleep parameters in 207 college students and 430 staff members of a school that had been affected by the Great East Japan Earthquake in A-city, and 304 staff members of a school in west Japan. College students study suggests that autonomic nerve function is related to the fatigue symptoms, physical activities, and sleep parameters. Furthermore, the study for the staff members of a school indicates that both members in A-city and west Japan have not only severe fatigue symptoms, but also sympathetic hyperactivity, low awake activity and increase counts of catnaps during waking hours.These data suggests that autonomic nerve function is clearly related to the fatigue symptoms, physical activities, and sleep parameters, and that it is a possible to make a diagnostic algorithm for fatigue state by using these objective index markers.