Teen School-Night Sleep Extension: An Intervention Targeting the Circadian System
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 52
- 试验地点
- 1
- 主要终点
- Change in sleep duration
研究概览
简要总结
The objective of this project is to develop an effective, yet feasible strategy to extend school-night sleep duration of older adolescents.
详细描述
The investigators are developing and testing a feasible behavioral intervention to increase school-night sleep duration by shifting the circadian system earlier and providing a time management plan for after-school activities in youngsters between 14 and 17 years and enrolled in high school. This study tests morning bright light and a school-night time management plan to facilitate earlier bedtimes to increase sleep duration. Circadian phase, sleep, neurobehavioral functioning and mood are measured before and immediately after the 2-week intervention and compared to a control group. Long-term effectiveness, adherence, and acceptability are also examined in a 3-week extension study. These data will provide evidence-based treatment strategies for delayed and sleep-restricted adolescents, and acceptability of and adherence to the treatment in this age group.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- None
盲法说明
Group assignment is impossible to blind.
入排标准
- 年龄范围
- 14 Years 至 17 Years（Child）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •14- 17 years; enrolled in high school; lives in or near Chicago, IL
排除标准
- 未提供
研究组 & 干预措施
Weekend Morning Bright Light & Early Bedtime
- Assigned a set sleep schedule for 2 weeks
- Receives evening time management goals to help facilitate scheduled bedtime
- Receives morning bright light from 2 light boxes (Phillips EnergyLights) on two weekend mornings.
干预措施: Weekend Morning Bright Light & Early Bedtime (Behavioral)
Healthy Control
- Sleep as usual at home for 2 weeks
结局指标
主要结局
Change in sleep duration
时间窗: 2-week baseline period and 2-week intervention period
Sleep duration is measured from a wrist actigraph (Actiwatch Spectrum) worn on the non-dominant wrist throughout the month-long study. For the first 2 weeks, participants sleep as usual at home (baseline). During the last two weeks, the experimental group shifts their bedtime earlier and the control group does not. The main outcome is the change in average sleep duration from baseline to intervention weeks.
Change in daytime sleepiness
时间窗: Saturday before and Saturday after the 2-week intervention
Daytime sleepiness is derived from the Stanford Sleepiness scale (1=Feeling active, vital, alert, or wide awake; 7= no longer fighting sleep, sleep onset soon; having dream-like thoughts) administered as part of the Automated Neuropsychological Assessment Metrics (ANAM). Participants complete the ANAM on the Saturday preceding the intervention period and again on a Saturday after the intervention is over. The ANAM is administered 3 times throughout the day.
Change in cognitive processing
时间窗: Saturday before and Saturday after the 2-week intervention
Participants complete executive tests from the Delis-Kaplan Executive Function System (D-KEFS) on the Saturday preceding the intervention period and again on a Saturday after the intervention is over. The D-KEFS is a battery of executive-function tests that assess a broad range of higher-level cognitive skills. Cognitive processing and monitoring is derived from the Design Fluency test. Changes in completion time and changes in the number of errors are the main outcomes.
Change in circadian phase
时间窗: Saturday evening before and Saturday evening after the 2-week intervention
A change in the timing of the circadian system is measured using the Dim Light Melatonin Onset (DLMO), the most reliable measure of circadian phase in humans. Salivary melatonin is measured every 30 minutes in dim light and assayed using standard commercially-available radioimmunoassay (RIA) kits. The time at which melatonin rises above a 4 pg/mL threshold is the DLMO. The DLMO is measured before starting the intervention ("baseline DLMO") and then again after completing the 2-week intervention ("final DLMO"). The primary outcome is DLMO phase shift (baseline DLMO - final DLMO).
Change in daytime vigilance/attention
时间窗: Saturday before and Saturday after the 2-week intervention
Vigilance/attention is derived from simple reaction time test administered as part of the Automated Neuropsychological Assessment Metrics (ANAM). Participants complete the ANAM on the Saturday preceding the intervention period and again on a Saturday after the intervention is over. The ANAM is administered 3 times throughout the day. Outcomes include number of lapses (responses \< 500 ms) and median reaction time. Changes in the the number of lapses and median reaction times are the main outcomes.
Change in inhibitory control
时间窗: Saturday before and Saturday after the 2-week intervention
Participants complete executive tests from the Delis-Kaplan Executive Function System (D-KEFS) on the Saturday preceding the intervention period and again on a Saturday after the intervention is over. The D-KEFS is a battery of executive-function tests that assess a broad range of higher-level cognitive skills. Inhibitory control is derived from the D-KEFS Color-Word Interference Test. Changes in completion time on this test is the main outcome.
次要结局
未报告次要终点
研究者
Stephanie Crowley
Associate Professor
Rush University Medical Center