Recruiting

Light Flashes

Sponsor:

Stanford University

Code:

NCT01406691

Conditions

Delayed Sleep Phase Disorder

Eligibility Criteria

Sex: All

Age: 15 - 19

Healthy Volunteers: Not accepted

Interventions

Flashes

Study Details

Brief summary:

Delayed Sleep Phase Disorder (DSPD) is a sleep disruption that commonly occurs in teens and manifests as a difficulty in waking up in the morning, going to sleep early enough at night, and daytime disturbances such as depression, fatigue, and restlessness. The purpose of this study is to determine if brief flashes of light, that are scheduled to occur during sleep, are effective in treating DSPD.

Conditions

Delayed Sleep Phase Disorder

Study ID

NCT01406691

Start date

Dec, 2013

Status verified date

Mar, 2023

Completion date

Sep, 2028

Anticipated

Primary completion date

Jun, 2028

Anticipated

Eligibility Criteria

Eligibility Criteria

Sex: All

Age: 15 - 19

Healthy Volunteers: Not accepted

Inclusion Criteria:

  • Male or female
  • Full-time in high school
  • primary sleep complaint consistent with delayed sleep phase disorder

Exclusion Criteria:

  • sleep only in prone position
  • currently taking medications specifically for the treatment of a sleep disorder

Study Design

Enrollment

20 participants

Anticipated

Allocation

Randomized

Intervention Model

Parallel Assignment

Primary purpose

Treatment

Interventions and Outcome Measures

Arms

experimental: Light

one hour of a sequence of light flashes (4000 lux, 3 msec, every 30 seconds); occurs during hour immediately prior to desired waketime

placebo comparator: Fake light

during hour immediately prior to desired waketime, subjects will receive one light flash (insufficient to cause phase shift)

Interventions

Flashes

one hour of a sequence of light flashes (4000 lux, 3 msec, every 30 seconds); occurs during the hour immediately prior to desired waketime

Primary outcome measure

  • Sleep quality [ Time Frame: weekly for four weeks ]

Central Contacts and Locations

Central contacts

Jamie Zeitzer, PhD

650-493-5000jzeitzer@stanford.edu

Locations

Stanford University

Recruiting

Palo Alto, California, United States, 94304

Principal Investigator:

Jamie Zeitzer, PhD

More Information

Sponsor

Stanford University

Last update posted

Mar 24, 2023

Last verified

Mar, 2023

Keywords

  • sleep
  • delayed sleep phase disorder
  • circadian
  • teen
  • adolescent

Trial information was received from ClinicalTrials.gov and was last updated on 2026-09-10. This information was provided to ClinicalTrials.gov by Stanford University on 2023-03-24.