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ClinicalTrials.gov public records Last synced Oct 8, 2026, 9:36 PM EDT

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Showing 97–120 of 154 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Sleep Disorders, Circadian Rhythm Clear all
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Sleep Profiles in REM Sleep Behavior Disorder

NCT04886076
View directory record Official record
Conditions
Rapid Eye Movement Sleep Behavior Disorder
Interventions
Not listed
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
40 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 5, 2025 · Synced Oct 8, 2026, 9:36 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Rhythmic Light Therapy for Alzheimer's Disease Patients

NCT05015478
View directory record Official record
Conditions
Mild Cognitive Impairment
Interventions
Tailored Rhythmic Lighting Intervention, Placebo Rhythmic Lighting Intervention
Device
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
55 Years and older
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
2
States / cities
Menands, New York • New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 23, 2026 · Synced Oct 8, 2026, 9:36 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Impact of Circulating and Tissue-specific Lipids on Vascular Function and Insulin Sensitivity in Chronic Night Shift Workers

NCT06550115
View directory record Official record
Conditions
Circadian Rhythm Sleep Disorder of Shift Work Type, Metabolic Disease, Insulin Sensitivity, Blood Pressure
Interventions
Time-restricted eating, Control eating
Behavioral
Lead sponsor
Colorado State University
Other
Eligibility
18 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2029
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Dec 17, 2025 · Synced Oct 8, 2026, 9:36 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Circadian Rhythms in Postmenopausal Women

NCT04893226
View directory record Official record
Conditions
Metabolic Syndrome, Postmenopausal Symptoms
Interventions
Time-Restricted Feeding (TRF)
Behavioral
Lead sponsor
Julie Pendergast
Other
Eligibility
45 Years to 65 Years · Female only
Enrollment
164 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Aug 10, 2026 · Synced Oct 8, 2026, 9:36 PM EDT
Terminated Not applicable Interventional Results available

Blind Child Melatonin Treatment Study

NCT00691444
View directory record Official record
Conditions
Blindness
Interventions
Melatonin, Melatonin
Dietary Supplement · Biological
Lead sponsor
Oregon Health and Science University
Other
Eligibility
5 Years to 20 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2015
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Nov 27, 2019 · Synced Oct 8, 2026, 9:36 PM EDT
Recruiting Not applicable Interventional

Healthy Lifestyles for Bipolar Disorder

NCT06188754
View directory record Official record
Conditions
Time Restricted Eating, Diet, Mediterranean
Interventions
Time restricted eating, Mediterranean diet
Behavioral
Lead sponsor
University of California, Berkeley
Other
Eligibility
18 Years to 65 Years
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
1
States / cities
Berkeley, California
Source: ClinicalTrials.gov public record
Updated Aug 4, 2026 · Synced Oct 8, 2026, 9:36 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Effects of Chronic Sleep Restriction in Young and Older People

NCT00506428
View directory record Official record
Conditions
Aging, Sleep Deprivation, Metabolic Syndrome
Interventions
chronic sleep restriction
Behavioral
Lead sponsor
National Institute on Aging (NIA)
NIH
Eligibility
18 Years to 70 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2011
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 29, 2009 · Synced Oct 8, 2026, 9:36 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Music, Sleep and Dementia Study

NCT04157244
View directory record Official record
Conditions
Dementia, Alzheimer Disease, Circadian Rhythm Disorders, Circadian Rhythm Sleep Disorder, Insomnia, Hypersomnia, Cognitive Impairment, Cognitive Decline, Mild Cognitive Impairment, Frontotemporal Dementia, Neurocognitive Disorders, Vascular Dementia, Sleep Disorder, Memory Impairment
Interventions
Tailored music listening intervention
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 110 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 13, 2021 · Synced Oct 8, 2026, 9:36 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Circadian Rhythm Disruption Effects on Smoke Inhalation

NCT04955431
View directory record Official record
Conditions
Inflammation, Sleep Deprivation, Circadian Rhythm Sleep Disorder, Shift Work Type, Smoke Inhalation
Interventions
Sleep Restriction, Normal Sleep
Behavioral
Lead sponsor
University of Montana
Other
Eligibility
18 Years to 44 Years · Male only
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Missoula, Montana
Source: ClinicalTrials.gov public record
Updated May 30, 2025 · Synced Oct 8, 2026, 9:36 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Examination of the Dynamic Relationships of Sleep, Physical Activity, and Circadian Rhythmicity With Neurobehavioral Heterogeneity in ADHD

NCT06810180
View directory record Official record
Conditions
Attention Deficit Hyperactivity Disorder (ADHD), Sleep, Physical Activity
Interventions
Go/No-Go Task, Delay discounting task, Mirror Tracing Persistence Task, Spatial Span, Stop Signal Task, Flanker task
Behavioral
Lead sponsor
Hugo W. Moser Research Institute at Kennedy Krieger, Inc.
Other
Eligibility
8 Years to 12 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2031
U.S. locations
2
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 9, 2026 · Synced Oct 8, 2026, 9:36 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 8, 2026, 9:36 PM EDT
Completed Phase 3 Interventional

Tasimelteon for the Treatment of Non-24-hour Sleep-Wake Disorder (N24HSWD) in Blind Individuals With no Light Perception

NCT01429116
View directory record Official record
Conditions
Non-24-Hour Sleep-Wake Disorder
Interventions
tasimelteon
Drug
Lead sponsor
Vanda Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
22
States / cities
Phoenix, Arizona • Orange, California • Palo Alto, California + 19 more
Source: ClinicalTrials.gov public record
Updated Apr 21, 2015 · Synced Oct 8, 2026, 9:36 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Sleep Timing, Eating and Activity Measurement Study

NCT04992611
View directory record Official record
Conditions
Sleep, Circadian Rhythm Disorders, Dietary Habits
Interventions
Sleep Extension (Early), Sleep Extension (Late)
Behavioral
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
14 Years to 18 Years
Enrollment
190 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 22, 2026 · Synced Oct 8, 2026, 9:36 PM EDT
Completed Phase 4 Interventional Results available

Ramelteon in the Treatment of Sleep and Mood in Patients With Seasonal Affective Disorder

NCT00502320
View directory record Official record
Conditions
Seasonal Affective Disorder
Interventions
Ramelteon, Placebo
Drug
Lead sponsor
Lehigh Valley Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Allentown, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 6, 2009 · Synced Oct 8, 2026, 9:36 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Circadian Rhythms and Cardiovascular Risk

NCT02202811
View directory record Official record
Conditions
Obstructive Sleep Apnea
Interventions
Forced Desynchrony
Behavioral
Lead sponsor
Oregon Health and Science University
Other
Eligibility
40 Years to 80 Years
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2020
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Jul 2, 2025 · Synced Oct 8, 2026, 9:36 PM EDT
Recruiting Not applicable Interventional

The Acute T-Rex (Timing of Resistance Exercise) Study

NCT06366399
View directory record Official record
Conditions
Diabetes Mellitus, Type 2, Insulin Resistance, Glucose Intolerance, Sleep Disturbance, Overweight or Obesity, Insulin Sensitivity
Interventions
Resistance Exercise Timing
Behavioral
Lead sponsor
University of Utah
Other
Eligibility
50 Years to 74 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Apr 3, 2025 · Synced Oct 8, 2026, 9:36 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 8, 2026, 9:36 PM EDT
Recruiting Not applicable Interventional

PICU-related Sleep and Circadian Dysregulation Pilot Study

NCT06505447
View directory record Official record
Conditions
Circadian Dysrhythmia, Sleep Disturbance, Critical Illness, Children, Only
Interventions
Daytime light exposure, Daytime restricted feeding
Other
Lead sponsor
State University of New York at Buffalo
Other
Eligibility
3 Years to 6 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Mar 23, 2026 · Synced Oct 8, 2026, 9:36 PM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Sleep and Circadian Contributions to Nighttime Blood Pressure

NCT05656768
View directory record Official record
Conditions
Sleep, Circadian Rhythm, Blood Pressure, Hypertension
Interventions
Constant Routine Protocol
Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years and older
Enrollment
1,427 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2028
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jan 29, 2026 · Synced Oct 8, 2026, 9:36 PM EDT
Completed Not applicable Interventional Results available

Blue Wavelength Light-blocking Glasses in ADHD-Insomnia

NCT01557595
View directory record Official record
Conditions
Attention Deficit Hyperactivity Disorder, Delayed Sleep Phase Type Circadian Rhythm Sleep Disorder
Interventions
Polarized glasses designed to filter out blue light
Device
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years and older
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Dec 13, 2017 · Synced Oct 8, 2026, 9:36 PM EDT
Completed Phase 3 Interventional

THRIVE Feasibility Trial

NCT05346588
View directory record Official record
Conditions
Surgery--Complications, Anesthesia Complication, Anesthesia Awareness, Anesthesia Emergence Delirium, Anesthesia, Surgery, Quality of Life, Pain, Postoperative, Nausea, Postoperative, Anesthesia Morbidity, Depression, Sleep Disorders, Circadian Rhythm
Interventions
Anesthetic technique Propofol TIVA, Anesthetic technique inhaled agent
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
4
States / cities
Stanford, California • Ann Arbor, Michigan • St Louis, Missouri + 1 more
Source: ClinicalTrials.gov public record
Updated Nov 24, 2023 · Synced Oct 8, 2026, 9:36 PM EDT
Completed Phase 1 Interventional

Sleep Enhancement Training Study for Novice Shiftworkers

NCT00786266
View directory record Official record
Conditions
Shift-Work Sleep Disorder
Interventions
Sleep Enhancement Training System, NIOSH shiftwork booklet
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
20 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 8, 2026, 9:36 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Circadian Rhythms and Sleep-Wake Cycles in Parkinson's Disease

NCT01742182
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Light exposure
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
55 Years to 85 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 18, 2020 · Synced Oct 8, 2026, 9:36 PM EDT
Completed Phase 3 Interventional Results available

The Clinical Utility of Measuring the Circadian Clock in Treatment of Delayed Sleep-Wake Phase Disorder

NCT03715465
View directory record Official record
Conditions
Delayed Sleep Phase Syndrome
Interventions
Melatonin 0.5 MG, Dim Light Melatonin Onset (salivary)
Drug · Other
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 65 Years
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Nov 25, 2022 · Synced Oct 8, 2026, 9:36 PM EDT