Effects of Combined Blue and Red Home-Based Light Therapy on Sleep in Adults With Self-Reported Sleep Difficulties
Completed · Not applicable
Conditions studied: Sleep
In brief
The goal of this intervention is to learn if a combination of morning blue light and evening red light therapy can improve sleep quality in adults with subclinical sleep complaints (non-diagnosed difficulty initiating or maintaining sleep). The main questions it aims to answer are: Does combined morning blue light and evening red light therapy reduce sleep onset latency (the time it takes to fall asleep) and improve sleep efficiency? Does this light therapy intervention improve subjective alertness upon awakening? Researchers will compare each participant's objective and subjective sleep data during a 7-day baseline (habitual routine) with their data during a 7-day light therapy intervention to assess whether light therapy improves sleep and daytime alertness.
Key facts
- Study ID
- NCT07465250
- Run by
- Colorado State University
- People needed
- 20
- Starts
- 2024-07-09
- Expected to finish
- 2025-07-07
- Last updated by the study team
- 2026-03-12
Who can join
Age: 18 and older. Sex: any. Healthy volunteers: accepted.
You may qualify if…
- Adults age 18 and older
- Subclinical complaints of disrupted sleep or poor sleep quality
- a score of 3 or greater on the Pittsburgh Sleep Quality Index (PSQI)
You may not qualify if…
- Younger than 18 years of age,
- Complaints of disrupted or poor sleep with a PSQI score of less than 2
- Previously diagnosed clinical sleep disorder, such as insomnia or Circadian Rhythm Sleep Disorder (CRSD)
- Employment in evening, night, or rotating shifts
- Engagement in irregular sleep patterns that are not aligned with the biological night
- Inability to comply with the study protocol and at-home study requirements
Where it is running
- Colorado State University — Fort Collins, Colorado, United States
Full record on ClinicalTrials.gov
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