Department of Occupational and Environmental Health, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi, 467-8601, Japan.
Int Arch Occup Environ Health. 2010 Jun;83(5):521-9. doi: 10.1007/s00420-009-0499-1. Epub 2009 Dec 12.
The purpose of this study is to clarify workers' autonomic nerve balance after long-term sick leave due to depressive disorders resulting from job stress compared with healthy workers.
The participants were 28 Japanese male workers recovered from depressive disorders and 75 healthy male workers. For each participant, the lifestyle and the fatigue within 1 month were assessed by a checklist. Heart rate variability (HRV) was measured at the workplace by acceleration plethysmography (APG). HRV was assessed by the coefficient of variation of rate intervals (CV), the spectral components in the high- and low-frequency areas represented by the normalized HF and LF (nHF and nLF), and the ratio of LF to HF components (LF/HF).
There was no significant difference in individual lifestyle and fatigue symptoms between the recovered and the healthy workers. The former workers showed significantly lower CV, higher nLF and log(10)LF/HF, and lower nHF that represent the predominance of sympathetic activity in comparison with the healthy workers. Moreover, the recovered workers who discontinued medications indicated significantly higher nLF and log(10)LF/HF, and lower nHF compared to the recovered workers who continued their medications.
Recovered workers in the workplace tended to show the depressive HRV feature that is the dominant sympathetic activity compared with the healthy workers. They might still be showing job stress that was not detected by the checklist. HRV analyses by APG in addition to questionnaire has the potential to become an effective approach for assessing workers' job stress to prevent repeated absences.
本研究旨在明确与健康工人相比，因工作压力导致抑郁障碍而长期请病假后工人的自主神经平衡情况。
参与者为 28 名日本男性抑郁障碍康复工人和 75 名健康男性工人。为每位参与者，通过清单评估生活方式和 1 个月内的疲劳情况。通过加速度体积描记法（APG）在工作场所测量心率变异性（HRV）。通过心率间隔变异系数（CV）、高频和低频区域的谱分量（用归一化 HF 和 LF 表示的 nHF 和 nLF）以及 LF 与 HF 分量的比值（LF/HF）评估 HRV。
与健康工人相比，康复工人的个体生活方式和疲劳症状无显著差异。前者工人的 CV 显著降低，nLF 和 log(10)LF/HF 更高，nHF 更低，这代表交感神经活动占主导地位。此外，与继续服药的康复工人相比，停止服药的康复工人的 nLF 和 log(10)LF/HF 更高，nHF 更低。
与健康工人相比，工作场所的康复工人往往表现出抑郁性 HRV 特征，即交感神经活动占主导地位。他们可能仍在承受工作压力，而这并未通过清单检测到。APG 的 HRV 分析结合问卷调查有可能成为评估工人工作压力的有效方法，以防止反复缺勤。
