The acute physiological stress response to an emergency alarm and mobilization during the day and at night.
The acute physiological stress response to an emergency alarm and mobilization during the day and at night.
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DOI：
10.4103/1463-1741.181998
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发表时间：
2016-05
期刊：
影响因子：
0.7
通讯作者：
Main LC
中科院分区：
文献类型：
--
作者：
Hall SJ;Aisbett B;Tait JL;Turner AI;Ferguson SA;Main LC
本研究的目的是探讨白天和夜间对紧急警报和动员的急性生理应激反应。16名健康男性，年龄25±4岁(平均±SD)，在睡眠实验室连续4个昼夜。这项研究采用了参与者内部设计，对时间、警报条件(警报或控制)和试验(白天或晚上)进行了重复测量。当警报响起时，参与者被要求立即动员起来。分别在动员后0min、15min、30min、45min、60min、90min、120min和对照条件下的相应时间采集唾液样本进行皮质醇分析。在整个研究过程中，持续测量心率。与各自的对照条件相比，白天(F20,442=9.140，P<；0.001)和夜间(F23,459=8.356，P<；0.001)警报条件下的心率更高。日间警示和日间控制条件下唾液皮质醇水平无差异。夜间警报和动员后皮质醇水平高于夜间控制状态(F6,183=2.450，P<；0.001)。夜间控制和夜间报警条件之间的皮质醇差异幅度大于白天控制和白天报警条件之间的差异幅度(F6,174=4.071，P<；0.001)。增强的心率对白天和夜间警报的反应支持了之前在现场环境中的观察。白天和夜间皮质醇反应的不同可能与参与者在睡眠和清醒时解读警报的能力不同有关。
The purpose of this study was to investigate the acute physiological stress response to an emergency alarm and mobilization during the day and at night. Sixteen healthy males aged 25 ± 4 years (mean ± SD) spent four consecutive days and nights in a sleep laboratory. This research used a within-participants design with repeated measures for time, alarm condition (alarm or control), and trial (day or night). When an alarm sounded, participants were required to mobilize immediately. Saliva samples for cortisol analysis were collected 0 min, 15 min, 30 min, 45 min, 60 min, 90 min, and 120 min after mobilization, and at corresponding times in control conditions. Heart rate was measured continuously throughout the study. Heart rate was higher in the day (F20,442 = 9.140, P < 0.001) and night (F23,459 = 8.356, P < 0.001) alarm conditions compared to the respective control conditions. There was no difference in saliva cortisol between day alarm and day control conditions. Cortisol was higher (F6,183 = 2.450, P < 0.001) following the night alarm and mobilization compared to the night control condition. The magnitude of difference in cortisol between night control and night alarm conditions was greater (F6,174 = 4.071, P < 0.001) than the magnitude of difference between the day control and day alarm conditions. The augmented heart rate response to the day and night alarms supports previous observations in field settings. Variations in the cortisol responses between conditions across the day and night may relate to differences in participants’ ability to interpret the alarm when sleeping versus when awake.