Shifting Sleep Timing in Teens

Passive Phototherapy to Improve Sleep in Teens

Status

Recruiting

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT05808179

Enrollment

160

Registered

2023-04-11

Start date

2022-07-01

Completion date

2026-06-20

Last updated

2025-06-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Adolescent Behavior, Sleep, Sleep Insufficiency

Brief summary

The goal of this clinical trial is to determine whether a combination of a novel lighting intervention and a behavioral intervention are able to increase total sleep time in adolescents. The main questions this trial aims to answer are whether this combination therapy is able to meaningfully increase total sleep time in adolescents, and do so over a sustained period of time, and whether such a changes is associated with concomitant changes in mood and cognitive performance.

Interventions

DEVICELight

Broad-spectrum white light flashes are \ 4000 lux, 2 msec long, occur every 20 s

BEHAVIORALCBT

Cognitive behavioral therapy including psychoeducation, sleep hygiene, stimulus control, activity scheduling, motivational interviewing

DEVICESham Light

Broad-spectrum white light flashes are \ 4000 lux, 2 msec long, occur once

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

DOUBLE (Subject, Outcomes Assessor)

Eligibility

Sex/Gender

ALL

Age

14 Years to 18 Years

Healthy volunteers

Yes

Inclusion criteria

1. Aged 14-18 and a full-time student in grades 9-12 2. Male or female 3. Willing and with a schedule permitting them to go to bed at an earlier time 4. Planning on sleeping at home in their bedroom for at least 75% of the study

Exclusion criteria

1. Currently taking any medications (including over-the-counter medications, e.g., melatonin) specifically for the treatment of sleep disorders 2. Sleep only in the prone (face-down) position

Design outcomes

Primary

Measure	Time frame	Description
Total sleep time	20 weeks	Average nightly total sleep time

Secondary

Measure	Time frame	Description
Melatonin timing	8 weeks	Timing of the onset of salivary melatonin
Mood	20 weeks	Score on the Center for Epidemiologic Studies Depression Scale for Children. Scored 0-60 with higher scores indicating greater depressive symptomatology.

Countries

United States

Contacts

Primary ContactJamie Zeitzer, PhD

jzeitzer@stanford.edu6504935000

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026