Jeong Kyoung Sook, Ahn Yeon-Soon, Jang Tae-Won, Lim Gayoung, Kim Hyung Doo, Cho Seung-Woo, Sim Chang-Sun
Department of Occupational and Environmental Medicine, Hallym Sacred Heart Hospital, Hallym University College of Medicine, Anyang, South Korea.
Department of Preventive Medicine, Yonsei University Wonju College of Medicine, Wonju, South Korea.
Saf Health Work. 2019 Sep;10(3):254-259. doi: 10.1016/j.shaw.2019.05.003. Epub 2019 May 28.
This cross-sectional study assessed the sleep quality using the ActiGraph and investigated the relationship between the parameters of sleep assessment and the type of shift work in Korean firefighters.
The participants were 359 firefighters: 65 day workers (control group) and 294 shift workers (shift work group: 77 firefighters with 3-day shift, 72 firefighters with 6-day shift, 65 firefighters with 9-day shift, and 80 firefighters with 21-day shift). Sleep assessments were performed using the ActiGraph (wGT3X-BT) for 24 hours during day shift (control and shift work group) and night shift and rest day (shift work group). The participants recorded bed time and sleep hours during the measurement period.
Sleep efficiency, total sleep time, and percentage of wake after sleep onset during night work were lower in the shift work group than control group ( < 0.05). Sleep efficiency decreased in night shift and increased in rest day, whereas wake after sleep onset increased in night shift and decreased in rest day ( < 0.05). Among shift work groups, sleep efficiency of 6-day shift was higher in day shift, and sleep efficiency of 21-day shift was lower in night shift than other shift groups ( < 0.05).
We found that the sleep quality in night shift of the shift work group was poorer than the control group. As to the type of shift work, sleep quality was good in 6-day shift and poor in 21-day shift. Thus, fast rotating shift such as 6-day shift may be recommended to improve the sleep quality of the firefighters.
本横断面研究使用活动记录仪评估睡眠质量，并调查韩国消防员睡眠评估参数与轮班工作类型之间的关系。
参与者为359名消防员：65名日班工作人员（对照组）和294名轮班工作人员（轮班工作组：77名3天轮班消防员、72名6天轮班消防员、65名9天轮班消防员和80名21天轮班消防员）。在日班（对照组和轮班工作组）、夜班和休息日期间，使用活动记录仪（wGT3X-BT）对参与者进行24小时睡眠评估。参与者记录测量期间的就寝时间和睡眠时间。
轮班工作组夜间工作时的睡眠效率、总睡眠时间和睡眠开始后觉醒百分比均低于对照组（<0.05）。夜班时睡眠效率降低，休息日时睡眠效率增加，而睡眠开始后觉醒在夜班时增加，在休息日时减少（<0.05）。在轮班工作组中，6天轮班的睡眠效率在日班时较高，21天轮班的睡眠效率在夜班时低于其他轮班组（<0.05）。
我们发现轮班工作组夜班的睡眠质量比对照组差。至于轮班工作类型，6天轮班的睡眠质量良好，21天轮班的睡眠质量较差。因此，建议采用6天轮班等快速轮换轮班方式来提高消防员的睡眠质量。
