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ClinicalTrials.gov public records Last synced Oct 8, 2026, 9:27 AM EDT

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Showing 73–96 of 154 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Sleep Disorders, Circadian Rhythm Clear all
Terminated Not applicable Interventional Results available

Blind Elderly Melatonin Treatment Study

NCT00692094
View directory record Official record
Conditions
Blindness
Interventions
Melatonin
Biological
Lead sponsor
Oregon Health and Science University
Other
Eligibility
55 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Nov 27, 2019 · Synced Oct 8, 2026, 9:27 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Sleep Length and Circadian Regulation in Humans

NCT00843843
View directory record Official record
Conditions
Sleep Disorders
Interventions
Bright light box
Device
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years to 45 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2014
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 8, 2016 · Synced Oct 8, 2026, 9:27 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Fire Fighter Fatigue Management Program: Operation Fight Fatigue

NCT01672502
View directory record Official record
Conditions
Shift-Work Sleep Disorder, Insomnia, Restless Leg Syndrome, Obstructive Sleep Apnea, Impaired Driving
Interventions
Sleep health education provided via a web-based program, Sleep disorder detection and treatment, Optimization of Sleep in Fire Station
Behavioral · Other
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
620 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 17, 2016 · Synced Oct 8, 2026, 9:27 AM EDT
Enrolling by invitation No phase listed Observational

Adult Sleep Health in the Rural Appalachia and Mississippi Delta Region and Its Relationships With Cardiometabolic Health Disparities.

NCT06336525
View directory record Official record
Conditions
Sleep Apnea, Insomnia, Sleep Deprivation, Sleep Disorders, Circadian Rhythm, Sleepiness, Excessive Daytime, Fatigue
Interventions
Not listed
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
25 Years to 65 Years
Enrollment
3,680 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 27, 2025 · Synced Oct 8, 2026, 9:27 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Effects of Sex Hormones on Circadian Rhythm in Men and Women

NCT00001285
View directory record Official record
Conditions
Bipolar Disorder, Circadian Rhythm, Depressive Disorder
Interventions
Not listed
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
Female only
Enrollment
73 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1991 – 2000
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Oct 8, 2026, 9:27 AM EDT
Completed Not applicable Interventional Results available

The Effects of Light Therapy on Circadian Rhythms, Sleep, and Mood in Postpartum Depression

NCT02769858
View directory record Official record
Conditions
Depression, Postpartum
Interventions
Light therapy
Device
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older · Female only
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Apr 22, 2021 · Synced Oct 8, 2026, 9:27 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Teen Sleep Health Study

NCT04087603
View directory record Official record
Conditions
Sleep Disorders, Circadian Rhythm, Adolescent Behavior
Interventions
Weekend Morning Bright Light & Early Bedtime
Behavioral
Lead sponsor
Rush University Medical Center
Other
Eligibility
14 Years to 17 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 19, 2019 · Synced Oct 8, 2026, 9:27 AM EDT
Completed Phase 2 Interventional

Effects of Hydrocortisone, Melatonin, and Placebo on Jet Lag

NCT00097474
View directory record Official record
Conditions
Jet Lag
Interventions
Hydrocortisone, Melatonin, Placebo
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 65 Years
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 28, 2026 · Synced Oct 8, 2026, 9:27 AM EDT
Completed Not applicable Interventional Results available

Treatment of Post-Traumatic Brain Injury (Post-TBI) Fatigue With Light Therapy

NCT01725750
View directory record Official record
Conditions
Traumatic Brain Injury, Fatigue
Interventions
Bright White Light (BWL), Dim Red Light (DRL)
Device
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
88 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 7, 2019 · Synced Oct 8, 2026, 9:27 AM EDT
Suspended Not applicable Interventional Accepts healthy volunteers

Light Exposure to Treat Sleep Disruption in Older People

NCT00427323
View directory record Official record
Conditions
Sleep Initiation and Maintenance Disorders, Circadian Rhythm Sleep Disorders, Hypersomnia
Interventions
light exposure
Procedure
Lead sponsor
National Institute on Aging (NIA)
NIH
Eligibility
55 Years to 80 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 11, 2009 · Synced Oct 8, 2026, 9:27 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Sleep and Circadian Mechanisms of Non-dipping Blood Pressure

NCT03558893
View directory record Official record
Conditions
Hypertension, Cardiovascular Risk Factor
Interventions
Forced Desynchrony
Behavioral
Lead sponsor
Oregon Health and Science University
Other
Eligibility
30 Years to 60 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2024
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Jul 20, 2026 · Synced Oct 8, 2026, 9:27 AM EDT
Completed No phase listed Observational

Investigating the Relationship Between Glycemia and Sleep in Adults With Cystic Fibrosis-Related Diabetes

NCT06700889
View directory record Official record
Conditions
Cystic Fibrosis Related Diabetes, Hyperglycaemia, Insomnia, Cardiometabolic Diseases, Circadian Rhythm Disorders
Interventions
Not listed
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 79 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 9, 2026 · Synced Oct 8, 2026, 9:27 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Morning Light Treatment to Improve Glucose Metabolism

NCT03188263
View directory record Official record
Conditions
PreDiabetes, Circadian Dysregulation
Interventions
Bright Light, Dim Light
Other
Lead sponsor
Northwestern University
Other
Eligibility
35 Years to 70 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 20, 2021 · Synced Oct 8, 2026, 9:27 AM EDT
Completed Not applicable Interventional

Melatonin Effects on Sleep and Circadian Rhythm in Youth and Young Adults With At-risk Symptoms

NCT03826563
View directory record Official record
Conditions
Psychosis, Sleep
Interventions
oral melatonin tablets (NatureMade brand), Placebo
Drug · Other
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
11 Years to 30 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 9, 2023 · Synced Oct 8, 2026, 9:27 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Fire Fighter Fatigue Management Program: Operation Healthy Sleep

NCT01988129
View directory record Official record
Conditions
Shift-Work Sleep Disorder, Insomnia, Restless Leg Syndrome, Obstructive Sleep Apnea, Impaired Driving, Injuries
Interventions
Sleep disorders education and screening
Other
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
1,189 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 16, 2017 · Synced Oct 8, 2026, 9:27 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

The Nuvigil and Provigil Pregnancy Registry

NCT01792583
View directory record Official record
Conditions
Narcolepsy, Obstructive Sleep Apnea, Shift Work Sleep Disorder
Interventions
Modafinil/armodafinil
Drug
Lead sponsor
Cephalon, Inc.
Industry
Eligibility
Female only
Enrollment
191 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2023
U.S. locations
1
States / cities
West Chester, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 5, 2024 · Synced Oct 8, 2026, 9:27 AM EDT
Completed Phase 4 Interventional

Lemborexant in Delayed Sleep Phase Syndrome

NCT05463861
View directory record Official record
Conditions
Delayed Sleep Phase Syndrome
Interventions
Lemborexant, Placebo
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
71 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Redwood City, California
Source: ClinicalTrials.gov public record
Updated Mar 2, 2026 · Synced Oct 8, 2026, 9:27 AM EDT
Active, not recruiting Not applicable Interventional

Bright Light Therapy for Non-motor Symptoms in Parkinson's Disease

NCT02909192
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Light Therapy Device
Device
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
40 Years and older
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 5, 2025 · Synced Oct 8, 2026, 9:27 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects of Daytime Eszopiclone Administration in Shift Workers

NCT00900159
View directory record Official record
Conditions
Shift-Work Sleep Disorder
Interventions
eszopiclone, matching placebo
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
20 Years to 50 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 30, 2017 · Synced Oct 8, 2026, 9:27 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Melatonin Treatment for Induced Transient Insomnia

NCT00950885
View directory record Official record
Conditions
Delayed Sleep Phase Disorder, Jet-lag, Shift-work Disorder
Interventions
Low Dose Melatonin, Placebo, High Dose Melatonin
Biological
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 30 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 8, 2017 · Synced Oct 8, 2026, 9:27 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Evaluation of the Reliability and Validity of a Diagnostic Sleep Disorders Questionnaire

NCT03468400
View directory record Official record
Conditions
Sleep Apnea Syndromes, Insomnia, Insufficient Sleep Syndrome, Circadian Rhythm Disorders
Interventions
Not listed
Lead sponsor
Dayzz Live Well Ltd.
Industry
Eligibility
21 Years to 65 Years
Enrollment
250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 22, 2020 · Synced Oct 8, 2026, 9:27 AM EDT
Completed Not applicable Interventional Results available

Zolpidem CR and Hospitalized Patients With Dementia

NCT00814502
View directory record Official record
Conditions
Dementia, Alzheimer Disease, Dementia, Vascular, Sleep Disorders, Circadian Dysregulation
Interventions
Zolpidem CR, Placebo
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
60 Years to 99 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 22, 2017 · Synced Oct 8, 2026, 9:27 AM EDT
Terminated Not applicable Interventional Results available

Transcranial Direct Current Stimulation Therapy for Sleepiness Related to Shift Work Disorder (tDCS-SWORD)

NCT03879044
View directory record Official record
Conditions
Shift-Work Sleep Disorder
Interventions
Transcranial Direct Current Stimulation
Device
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 25, 2021 · Synced Oct 8, 2026, 9:27 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Sleep Disorders Management, Health and Safety in Police

NCT00207285
View directory record Official record
Conditions
Sleep Disorders, Sleep Apnea, Obstructive, Restless Legs Syndrome, Sleep Disorders, Circadian Rhythm, Sleep Initiation and Maintenance Disorders
Interventions
Sleep Hygiene Education, Screening and Treatment of Sleep Disorders
Behavioral · Procedure
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
731 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2010
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 17, 2016 · Synced Oct 8, 2026, 9:27 AM EDT