NCT07685262 Morning Bright Light Therapy and Daytime Functioning in University Students
| NCT ID | NCT07685262 |
| Status | Recruiting |
| Phase | — |
| Sponsor | The Hong Kong Polytechnic University |
| Condition | Sleep |
| Study Type | INTERVENTIONAL |
| Enrollment | 153 participants |
| Start Date | 2024-05-01 |
| Primary Completion | 2028-06-30 |
Eligibility & Interventions
Eligibility Fast-Check
Enter your details for a quick preliminary check. This does not replace medical advice.
What to Expect as a Participant
You will actively receive the study intervention — which may be a drug, biologic, device, or procedure.
This trial targets 153 participants in total. It began in 2024-05-01 with a primary completion date of 2028-06-30.
⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.
Brief Summary
This study tests whether a week of morning bright light therapy changes how well healthy young adults sleep and how alert, positive, and mentally sharp they feel during the day. Morning light is the body's main signal for keeping its internal clock and sleep-wake timing on track. Many university students keep irregular hours and spend most of the day indoors, where light is far dimmer than daylight. This study asks whether adding a short, bright morning light session can help. Each participant takes part for two weeks. For one week they use a bright light box for 30 minutes each morning, shortly after waking; for the other week they keep their usual lighting. The order of the two weeks is decided at random, and each person serves as their own comparison. Throughout both weeks, sleep is tracked with a wrist-worn Fitbit and a short daily diary. Participants also rate their sleepiness and mood, complete brief computer-based attention and memory tasks, and take part in a short interview at the end about their experience. The study compares the bright-light week with the usual-light week to see whether morning bright light improves sleep regularity and efficiency, reduces daytime sleepiness, lifts mood, or affects thinking performance. The trial is being conducted in waves; a first wave has completed and a second wave is planned, pending additional funding.
Eligibility Criteria
Inclusion Criteria: * Enrolled university student * Aged 18 years or older * Generally healthy, with no diagnosed sleep disorder (sleep quality screened using the Pittsburgh Sleep Quality Index) * Residing in shared student housing Exclusion Criteria: * Diagnosed insomnia or other diagnosed sleep disorder * Other medical, psychiatric, or neurological condition that could affect sleep, mood, or cognition
Contact & Investigator
Frequently Asked Questions
Who can join the NCT07685262 clinical trial?
This trial is open to participants of all sexes, aged 18 Years or older, studying Sleep. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.
Is NCT07685262 currently recruiting?
Yes, NCT07685262 is actively recruiting participants. Contact the research team at cehao.yu@polyu.edu.hk for enrollment information.
Where is the NCT07685262 trial being conducted?
This trial is being conducted at Hung Hom, Hong Kong.
Who is sponsoring the NCT07685262 clinical trial?
NCT07685262 is sponsored by The Hong Kong Polytechnic University. The trial plans to enroll 153 participants.