Ziebertz Carla M, Beckers Debby G J, Van Hooff Madelon L M, Kompier Michiel A J, Geurts Sabine A E
Behavioural Science Institute, Radboud University, Nijmegen, the Netherlands.
J Sleep Res. 2017 Dec;26(6):809-815. doi: 10.1111/jsr.12519. Epub 2017 Mar 28.
The aim of this study was to: (i) gain more insight into the relationship between being on-call and sleep and (ii) investigate the role of stress in this relationship. Data were collected by means of an experimental field study with a within-subject design (two conditions, random order). Ninety-six students participated during two consecutive nights: a reference night and a simulated on-call night without an actual call. Participants were told they could be called at any time during the on-call night. In the case of a call, participants had to perform online tasks for approximately 30 min. Self-reported sleep quality and the extent to which participants experienced stress during the on-call period were assessed by means of short questionnaires. Actigraphy was used to obtain objective sleep measures. Results for actigraphy data revealed no significant within-person differences between conditions. However, participants reported longer sleep onset latencies, more awakenings and more wake after sleep onset during the on-call night than during the reference night. They also reported more sleep problems and a lower overall sleep quality, and felt less recuperated after the on-call night. Perceived stress moderated the relationship between being on-call, on one hand, and the number of awakenings, wake after sleep onset, sleep problems and overall sleep quality, on the other hand. Results show that, even in the absence of an actual call, sleep during on-call nights is of lower quality and has less restorative value - especially when being on-call is experienced as stressful.
（i）更深入地了解待命与睡眠之间的关系，以及（ii）调查压力在这种关系中的作用。数据通过一项采用受试者内设计（两种条件，随机顺序）的实验性现场研究收集。96名学生连续两个晚上参与：一个参照夜晚和一个无实际呼叫的模拟待命夜晚。参与者被告知在待命夜晚的任何时间都可能接到呼叫。如果接到呼叫，参与者必须在线执行约30分钟的任务。通过简短问卷评估自我报告的睡眠质量以及参与者在待命期间感受到的压力程度。使用活动记录仪获取客观的睡眠指标。活动记录仪数据的结果显示不同条件下个体内部无显著差异。然而，参与者报告称，与参照夜晚相比，待命夜晚的入睡潜伏期更长、觉醒次数更多、睡眠中觉醒后清醒时间更长。他们还报告了更多的睡眠问题和更低的总体睡眠质量，并且在待命夜晚后感觉恢复程度更低。感知到的压力调节了一方面待命与另一方面觉醒次数、睡眠中觉醒后清醒时间、睡眠问题和总体睡眠质量之间的关系。结果表明，即使没有实际呼叫，待命夜晚的睡眠质量也较低且恢复价值较小——尤其是当待命被体验为有压力时。
