Home › Circadian Rhythm Sleep Disorders › NCT06471374

Pathophysiology of Circadian Rhythm Delayed Sleep Wake Phase Disorder

Who can join

Ages 16 to 40 · All sexes · Healthy volunteers welcome

Inclusion Criteria:

* Delayed sleep wake phase disorder diagnosis
* Altitude history: currently residing at Denver altitude or higher
* BMI normal to moderately overweight

Exclusion Criteria:

* Recent medical condition
* Psychiatric disorder
* Sleep disorder
* Medication use

About the study

The goal of this study is to understand factors that contribute to delayed sleep wake phase disorder (DSWPD). The investigators will examine whether patients with DSWPD exhibit alterations in circadian rhythms and sensitivity to light compared to healthy controls. The investigators will also test a new method of predicting circadian rhythms form a blood sample.

What is being tested

• Circadian rhythm assessment (behavioral)
• Light sensitivity assessment (behavioral)

Sponsor: University of Colorado, Boulder · Participants: 66 · Started: Apr 2, 2024

Contact the study team

• Kenneth Wright, PhD · Phone: 303-735-1923

Official record on ClinicalTrials.gov — NCT06471374

Locations in the U.S.

Conditions

• Circadian Rhythm Sleep Disorders

From ClinicalTrials.gov, data retrieved Sep 29, 2026. Each study sets its own eligibility; the study team decides who can join.