The Effects of Bright Light on Adaptation to Night Work Among Nurses
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 35
- 试验地点
- 2
- 主要终点
- Sleepiness during the night shifts
研究概览
简要总结
This project examines 1) the effects of appropriately timed bright light on adaptation (in terms of sleep and sleepiness) to three consecutive night shifts; and 2) the effects of such bright light on re-adaptation (in terms of sleep and sleepiness) to a day-oriented schedule after the night shift period.
详细描述
Shift workers frequently experience sleepiness during night shifts, which may have consequences for performance. Sleep duration is often shortened after a night shift. Properly timed bright light treatment is efficient in delaying the circadian rhythm and can enhance alertness, increase performance and prolong sleep after night shifts. There is a lack of studies on light treatment to rotating shift workers. This study is a randomized controlled crossover trial evaluating the effect of bright light treatment on sleep and sleepiness in rotating shift workers with three consecutive night shifts. The aim is to evaluate whether bright light treatment improves adaptation to three consecutive night shifts (reduces sleepiness during night shifts and improves sleep after night shifts), as well as whether such treatment affects re-adaptation to a day-oriented schedule after the night shift period.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Treatment
- 盲法
- Triple (Participant, Investigator, Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •A rotating shift work schedule involving three days without night shifts, followed by three consecutive night shifts, followed by three days without night shifts
- •Problems with sleepiness during night shifts
排除标准
- •Pregnancy
研究组 & 干预措施
Bright light
10 000 lux
干预措施: Bright light (Behavioral)
Red light
400 lux
干预措施: Red light (Behavioral)
结局指标
主要结局
Sleepiness during the night shifts
时间窗: 3 days
Self-reported using the Karolinska Sleepiness Scale (KSS)
次要结局
- Sleep during the days after the night shift period(3 days)
- Psychomotor vigilance during night shifts(3 days)
- Functioning on each shift, and shift period in total, compared to under normal conditions(6 days)
- Sleep after the night shifts(3 days)
- Sleepiness during the days after the night shift period(3 days)
研究者
Bjorn Bjorvatn
Professor
University of Bergen