Vangelova Katia K
National Center of Public Health Protection, Sofia, Bulgaria.
Rev Environ Health. 2008 Jan-Mar;23(1):83-9. doi: 10.1515/reveh.2008.23.1.83.
The aim was to study the effect of job task and fast backward-rotating shifts on the time-of-day variations of cortisol, fatigue, and sleep disturbances in broadcasting sound engineers. The concentration of saliva cortisol and ratings of stress, sleepiness, and fatigue were followed at 3-hour intervals during the fast backward-rotating shifts in 26 sound engineers: 14 subjects from control rooms, aged 45.1 +/- 7.3 years, and 12 subjects working in direct transmissions, aged 51.7 +/- 6.0 years. Saliva cortisol was assessed using an radioimmunology kit. The participants reported for stress symptoms after the shifts and filled a sleep diary. The effects of job task, shift, and time-of-day were analyzed by tests of between-subjects effects (SPSS). Cortisol retained the typical diurnal pattern with a highly significant effect of the shift. The job task and the shift interacted significantly. Higher cortisol values during the morning and night shifts in engineers working in direct transmissions were found. Their stress ratings were also higher, as well as the ratings of sleepiness and fatigue. The quality of sleep was worse in engineers working in direct transmissions. In conclusion, our data indicate that stress and fast backward-rotating shifts in sound engineers working in direct transmissions affect physiological stress markers such as cortisol and increase sleepiness, fatigue, and sleep problems.
目的是研究工作任务和快速倒班对广播音响工程师皮质醇的昼夜变化、疲劳及睡眠障碍的影响。对26名音响工程师在快速倒班期间每隔3小时采集唾液皮质醇浓度，并记录压力、嗜睡和疲劳评分：14名来自控制室的受试者，年龄为45.1±7.3岁，12名从事直播传输工作的受试者，年龄为51.7±6.0岁。使用放射免疫试剂盒评估唾液皮质醇。参与者在轮班后报告压力症状并填写睡眠日记。通过受试者间效应检验（SPSS）分析工作任务、轮班和时间的影响。皮质醇保持典型的昼夜模式，轮班有高度显著的影响。工作任务和轮班有显著交互作用。发现从事直播传输工作的工程师在早班和夜班期间皮质醇值更高。他们的压力评分也更高，嗜睡和疲劳评分也更高。从事直播传输工作的工程师睡眠质量更差。总之，我们的数据表明，从事直播传输工作的音响工程师的压力和快速倒班影响诸如皮质醇等生理压力指标，并增加嗜睡、疲劳和睡眠问题。
