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NCT01586039 · ClinicalTrials.gov registry record · NA
Investigating the Effects of Evening Light Exposure on Melatonin Suppression, Alertness and Nocturnal Sleep
A NA study, sponsored by Brigham and Women's Hospital.
- Completed
- Registry status
- NA
- Development phase
- 33
- Enrollment target
NCT01586039 is a NA study that has completed, run by Brigham and Women's Hospital. The registered enrollment target is 33 participants.
The verdict
NCT01586039, a NA study, has completed, sponsored by Brigham and Women's Hospital.
- COMPLETED
- Registry status
- NA
- Development phase
- 33 participants
- Enrollment target
Study Summary
The timing and quality of sleep is governed by environmental and physiologic factors. Environmental factors, especially ambient lighting can impact the circadian system and alter the timing and structure of sleep. Light exposure can also acutely alter neural activation state and impair sleep. These effects all demonstrate marked sensitivity to short-wavelength blue light with maximal sensitivity in the 460-480 nm range. The alerting effects of blue light in the evening persist for at least 3-4 hours after the lights are turned off, and can disturb subsequent sleep. Avoiding these deleterious effects of light exposure prior to sleep on subsequent sleep would be beneficial to sleep quality and potentially health. The investigators will compare the effects of two light sources, equated for visual stimulus (lux), on multiple non-visual responses to light. The investigators will compare a 90 lux exposure of a commercially available Compact Fluorescent Light (CFL) with a novel LED white light source that is depleted in the short-wavelength visible range (Biological Illumination LCC, FL). In a within-subject design, the investigators will test the hypotheses that exposure to a blue-depleted LED as compared to a CFL exposure at (1) 90 lux or (2) 50 lux will cause significantly: 1. Less melatonin suppression between melatonin onset and bedtime; 2. Less subjective and objective alerting responses before bedtime; 3. Less disruption of nocturnal sleep structure and quality.
Interventions
- DEVICE Visible light
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 33 participants |
| Start Date | 2012-08 |
| Est. Completion | 2014-03 |
| Phase | NA |
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Full Details on ClinicalTrials.gov ↗What the Registry Record Tells You About NCT01586039
The ClinicalTrials.gov registry entry for NCT01586039 describes a study currently listed as completed, categorized as NA. The registered enrollment target is 33 participants, a figure that helps gauge the scale of data the investigators plan to collect. The listed sponsor is Brigham and Women's Hospital, which has 937 total studies on file at ClinicalTrials.gov.
The record links to 0 conditions, and to 1 intervention - of which Visible light is the first listed.
NCT01586039 reports 0 study locations.
Frequently Asked Questions
What is clinical trial NCT01586039 about?
NCT01586039 is a clinical study titled "Investigating the Effects of Evening Light Exposure on Melatonin Suppression, Alertness and Nocturnal Sleep". The timing and quality of sleep is governed by environmental and physiologic factors. Environmental factors, especially ambient lighting can impact the circadian system and alter the timing and structure of sleep. Light exposure can also acutely alter neural activation state and impair sleep. These ...
What is the current status of trial NCT01586039?
This trial is currently completed. It is a NA study. The enrollment target is 33 participants. The study started on 2012-08. Estimated completion is 2014-03.
What interventions are being tested in trial NCT01586039?
The interventions under investigation include: Visible light (DEVICE).
Who is sponsoring clinical trial NCT01586039?
This trial is sponsored by Brigham and Women's Hospital, which has 937 total clinical trials registered on ClinicalTrials.gov.
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