Morning Bright Light for Better Daytime Functioning in University Students

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a single-site, randomized crossover trial in Hong Kong where healthy undergraduate students will complete two consecutive one-week periods: morning bright light therapy and a usual-light control, in random order. Each participant serves as their own control, with no washout period between periods. Morning exposure uses a 10,000 lux light box shortly after waking, while sleep and daytime function are measured with a wrist device, diaries, mood and attention tasks, and a brief interview to assess any changes in sleep regularity, daytime alertness, mood, and cognition.

Why it matters

Who can join: the full rules

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

Where it's running

• The Hong Kong Polytechnic University
  Hung Hom, Hong Kong Recruiting

Study contacts

• Study coordinator: Cehao Yu, PhD
• Email: cehao.yu@polyu.edu.hk
• Phone: +852 3400 3012

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.