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ClinicalTrials.gov public records Last synced Oct 21, 2026, 1:43 PM EDT

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Showing 49–72 of 258 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Circadian Rhythms Clear all
Withdrawn No phase listed Observational

Post Discharge Circadian Rhythms Post Adenotonsillectomy

NCT03217708
View directory record Official record
Conditions
Circadian Dysrhythmia
Interventions
Jawbone UP4
Device
Lead sponsor
Baylor College of Medicine
Other
Eligibility
5 Years to 10 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 31, 2022 · Synced Oct 21, 2026, 1:43 PM EDT
Recruiting Not applicable Interventional

Examining the Circadian Timing Effects of the Hypotensive Response to Exercise

NCT07049783
View directory record Official record
Conditions
Young Adults, Hypertension, Post-Exercise Hypotension, Circadian Rhythm
Interventions
Exercise
Behavioral
Lead sponsor
Freda Patterson
Other
Eligibility
18 Years to 39 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated Aug 17, 2025 · Synced Oct 21, 2026, 1:43 PM EDT
Completed Phase 1 Interventional

Sleep Enhancement Training Study for Experienced Shiftworkers

NCT00786357
View directory record Official record
Conditions
Shift-Work Sleep Disorder
Interventions
NIOSH shiftwork booklet, Sleep Enhancement Training System
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
40 Years and older
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 23, 2010 · Synced Oct 21, 2026, 1:43 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Investigating the Effects of Evening Light Exposure on Melatonin Suppression, Alertness and Nocturnal Sleep

NCT01586039
View directory record Official record
Conditions
Non-visual Photoreception
Interventions
Visible light
Device
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 30 Years
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 14, 2021 · Synced Oct 21, 2026, 1:43 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Light and Exercise on Human Circadian Rhythms and Performance

NCT02747719
View directory record Official record
Conditions
Circadian Rhythm
Interventions
Light and exercise
Behavioral
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 55 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 11, 2018 · Synced Oct 21, 2026, 1:43 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

The Effect of Light Intervention on Recovery in Individuals With Opioid Use Disorder (OUD)

NCT06832007
View directory record Official record
Conditions
Opioid Use Disorder, Sleep, Circadian Rhythms, fMRI Research
Interventions
AYO light glasses (experimental), AYO light glasses (comparator)
Device
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 60 Years
Enrollment
105 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Oct 9, 2026 · Synced Oct 21, 2026, 1:43 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Facilitating Adjustment to Simulated Jet Lag

NCT05382923
View directory record Official record
Conditions
Circadian Rhythm Sleep Disorder, Jet Lag Type
Interventions
Bright Light, Bright Light + Exercise + Melatonin, Control
Behavioral
Lead sponsor
University of Arizona
Other
Eligibility
18 Years to 45 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated May 19, 2022 · Synced Oct 21, 2026, 1:43 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Comprehensive Police Fatigue Management Program

NCT00246051
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, Expert-Led Sleep Disorders Screening and Treatment, Online Sleep Disorders Screening
Behavioral · Other
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
683 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2010
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 15, 2013 · Synced Oct 21, 2026, 1:43 PM EDT
Completed Not applicable Interventional

Relieving Pain and Improving Sleep: Evaluating Topical Pain Relief and Sleep Patches

NCT06505005
View directory record Official record
Conditions
Pain, Back, Pain, Acute, Sleep Disorder, Sleep Disorders, Circadian Rhythm, Sleep, Sleep Deprivation, Insomnia
Interventions
Drug- free, non-invasive patch (FREEDOM or REM Patch) with haptic vibrotactile trigger technology (VTT) Other Names:, Sham Patch without haptic vibrotactile trigger technology (VTT)
Device
Lead sponsor
SuperPatch Limited LLC
Industry
Eligibility
18 Years to 65 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Tyrone, Georgia
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Oct 21, 2026, 1:43 PM EDT
Completed Phase 1 Interventional

Study of the Pharmacokinetics and Safety of Tasimelteon in Children and Adolescents

NCT02776215
View directory record Official record
Conditions
Circadian Rhythm Sleep Disorders, Non-24 Hour Sleep-Wake Disorder, Autism Spectrum Disorder, Smith-Magenis Syndrome
Interventions
tasimelteon
Drug
Lead sponsor
Vanda Pharmaceuticals
Industry
Eligibility
3 Years to 17 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 21, 2024 · Synced Oct 21, 2026, 1:43 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Sleepiness and Brain Function: The Effect of Armodafinil in Shift Work Sleep Disorder

NCT00688142
View directory record Official record
Conditions
Shift Work Sleep Disorder
Interventions
Not listed
Lead sponsor
Henry Ford Health System
Other
Eligibility
18 Years to 55 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Mar 31, 2010 · Synced Oct 21, 2026, 1:43 PM EDT
Recruiting Not applicable Interventional

Massage Impact on Sleep in Pediatric Oncology

NCT06892158
View directory record Official record
Conditions
Cancer, Pediatric Cancer, Chemotherapy Effect, Acute Myeloid Leukemia, Acute Lymphoblastic Leukemia, Pediatric, Hematopoietic Stem Cell Transplantation (HSCT)
Interventions
Massage therapy, Standard of care
Other
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
12 Years to 21 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
2
States / cities
Washington D.C., District of Columbia • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 15, 2026 · Synced Oct 21, 2026, 1:43 PM 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 21, 2026, 1:43 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

EMS Providers' Health Initiative Study

NCT05153759
View directory record Official record
Conditions
Shift-work Disorder
Interventions
Meal service
Other
Lead sponsor
State University of New York at Buffalo
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Jan 27, 2026 · Synced Oct 21, 2026, 1:43 PM 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 21, 2026, 1:43 PM EDT
Recruiting Phase 1 Interventional

Ketoconazole Effects on the Daily Cortisol Rhythm in Mild Autonomous Cortisol Secretion

NCT07649317
View directory record Official record
Conditions
Mild Autonomous Cortisol Secretion
Interventions
Ketoconazole
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 100 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Oct 21, 2026, 1:43 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Role of the Circadian System in Binge Eating Disorder

NCT04724668
View directory record Official record
Conditions
Binge-Eating Disorder, Circadian Rhythm Disorders
Interventions
Melatonin (3hrs before DLMO), Placebo (3hrs before DLMO), Morning light version 1, Morning light version 2
Dietary Supplement · Device
Lead sponsor
University of Cincinnati
Other
Eligibility
18 Years to 50 Years
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
Mason, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 21, 2026 · Synced Oct 21, 2026, 1:43 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Light Treatment During Sleep on Young Men

NCT00796939
View directory record Official record
Conditions
Depression
Interventions
Green light mask, Red Light Mask
Device
Lead sponsor
University of California, San Diego
Other
Eligibility
25 Years to 60 Years · Male only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Apr 10, 2015 · Synced Oct 21, 2026, 1:43 PM EDT
Completed No phase listed Observational

Sleep & Postoperative Delirium in Hispanic/ Latino Patients After Cardiothoracic Surgery

NCT04786899
View directory record Official record
Conditions
Delirium in Old Age, Sleep Disturbance, Circadian Rhythm Sleep Disorder
Interventions
Not listed
Lead sponsor
University of Miami
Other
Eligibility
50 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Apr 29, 2022 · Synced Oct 21, 2026, 1:43 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Validating the Use of a Subjectively Reported Sleep Vital Sign

NCT03018912
View directory record Official record
Conditions
Obstructive Sleep Apnea (OSA), Insomnia, Restless Leg Syndrome (RLS), Hypersomnia Type; Sleep Disorder, Shift Work Sleep Disorders
Interventions
Sleep VS
Other
Lead sponsor
Kaiser Permanente
Other
Eligibility
18 Years and older
Enrollment
1,260 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Fontana, California
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Oct 21, 2026, 1:43 PM EDT
Completed Not applicable Interventional

Effect of Therapeutic Light on Sleep, Circadian Rhythm, and Global Function in Women With Alzheimer's

NCT02502045
View directory record Official record
Conditions
Alzheimer's Disease
Interventions
Morning Simulated Sunlight, Non-therapeutic Red Light
Device
Lead sponsor
Yale University
Other
Eligibility
65 Years and older · Female only
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Farmington Hills, Michigan
Source: ClinicalTrials.gov public record
Updated Feb 20, 2017 · Synced Oct 21, 2026, 1:43 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

CircaHealth Development and Evaluation

NCT03835572
View directory record Official record
Conditions
Health Behavior, Health Knowledge, Attitudes, Practice, Circadian Rhythm
Interventions
CircaHealth: a course on circadian rhythms and health, Sleep hygiene materials
Other
Lead sponsor
University of Miami
Other
Eligibility
Not listed
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated May 9, 2019 · Synced Oct 21, 2026, 1:43 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Nighttime Synchrony of Your Nutrition and Circadian Health

NCT07329283
View directory record Official record
Conditions
Sleep, Metabolism Changes, Circadian Rhythm, Lifestyle Factors, Sleep Hygiene, Sleep Hygiene, Inadequate, Sleep Deprivation, Insufficient Sleep, Circadian Misalignment, Circadian Dysregulation, Light Exposure
Interventions
Central Clock Misalignment, Peripheral Misalignment
Behavioral
Lead sponsor
University of Utah
Other
Eligibility
18 Years to 35 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2031
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jan 22, 2026 · Synced Oct 21, 2026, 1:43 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Sleep/Wake Cycle and Depression: An Imaging and Treatment Study

NCT04350567
View directory record Official record
Conditions
Depression; Major Depressive Disorder
Interventions
Sleep Deprivation
Other
Lead sponsor
Stony Brook University
Other
Eligibility
18 Years to 100 Years
Enrollment
61 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2025
U.S. locations
1
States / cities
Stony Brook, New York
Source: ClinicalTrials.gov public record
Updated Jul 17, 2025 · Synced Oct 21, 2026, 1:43 PM EDT