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Showing 1–24 of 451 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Withdrawn Not applicable Interventional Accepts healthy volunteers

Hypoxia and Heart Rate Variability

NCT05606406
Conditions
Pulmonary Disease, Chronic Obstructive, Hypoxia
Interventions
Nocturnal Oxygen
Other
Lead sponsor
University of Miami
Other
Eligibility
18 Years to 70 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Miami, Florida
Conditions
Pacemaker, Diastolic Dysfunction, Diastolic Heart Failure
Interventions
Adjustment of lower rate limit, Maintenance of lower rate limit
Device
Lead sponsor
University of Vermont
Other
Eligibility
18 Years and older
Enrollment
123 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Burlington, Vermont
Completed Phase 1 Interventional Accepts healthy volunteers

Ivabradine for Rate Control in Permanent Atrial Fibrillation

NCT03987204
Conditions
Atrial Fibrillation, Atrial Fibrillation, Persistent
Interventions
Ivabradine
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years to 90 Years
Enrollment
4 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
New Haven, Connecticut
Conditions
Sleep Quality
Interventions
Risk Stratification, Usual Care
Behavioral
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Enrollment
166 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Chicago, Illinois
Conditions
Prematurity
Interventions
Apparatuses
Device
Lead sponsor
University of Oklahoma
Other
Eligibility
Up to 20 Minutes
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Completed Not applicable Interventional Accepts healthy volunteers

Heart Rate Sensing and Response in Persons With Anorexia Nervosa

NCT02579018
Conditions
Anorexia Nervosa
Interventions
One hour supervised exercise session
Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Durham, North Carolina
Conditions
Bradycardia
Interventions
Recording heart rate changes
Other
Lead sponsor
Joseph D. Tobias
Other
Eligibility
Up to 18 Years
Enrollment
276 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Columbus, Ohio
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Hot Water Immersion on Heart Rate Variability and Glucose

NCT06193291
Conditions
Glucose Tolerance, HRV
Interventions
Feet heating, Calf heating
Procedure
Lead sponsor
San Diego State University
Other
Eligibility
18 Years to 65 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
San Diego, California
Completed Not applicable Interventional Results available

Impact of Heart Rate Characteristics Monitoring in Neonates

NCT00307333
Conditions
Sepsis
Interventions
HeRO heart rate characteristics monitor
Device
Lead sponsor
University of Virginia
Other
Eligibility
1 Day to 32 Weeks
Enrollment
3,003 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2011
U.S. locations
8
States / cities
Birmingham, Alabama • Miami, Florida • Orlando, Florida + 5 more
Conditions
Depression
Interventions
Active Transcranial Direct Current Stimulation (tDCS), Sham Transcranial Direct Current Stimulation (tDCS)
Device
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 65 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
New York, New York
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Apple Hearing Study

NCT04172766
Conditions
Hearing Loss, Noise-Induced, Hearing Loss, Tinnitus
Interventions
Not listed
Lead sponsor
Apple Inc.
Industry
Eligibility
18 Years and older
Enrollment
300,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2029
U.S. locations
1
States / cities
Ann Arbor, Michigan
Completed No phase listed Observational

Weaning And Variability Evaluation

NCT01237886
Conditions
Mechanically Ventilated Patients, Extubation
Interventions
Not listed
Lead sponsor
Ottawa Hospital Research Institute
Other
Eligibility
18 Years and older
Enrollment
660 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
7
States / cities
Ann Arbor, Michigan • Billings, Montana • Lebanon, New Hampshire + 4 more
Not listed Not applicable Interventional Accepts healthy volunteers

Anti-inflammatory Actions of Osteopathic Manipulative Treatment

NCT04177264
Conditions
Inflammation
Interventions
Occipito-Atlantal Decompression (OA DC), Sham Occipito-Atlantal Decompression (Sham OA DC), Splenic Lymphatic Pump Technique (SpLPT), Sham Splenic Lymphatic Pump Technique (Sham SpLPT), Transcutaneous Auricular Vagus Nerve Stimulation (taVNS), Sham Transcutaneous Auricular Vagus Nerve Stimulation (Sham taVNS)
Procedure · Device
Lead sponsor
Burrell College of Health Sciences
Other
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Las Cruces, New Mexico
Completed Not applicable Interventional Accepts healthy volunteers

Resonance Breathing Intervention Opioid Use Disorder

NCT05830773
Conditions
Substance-Related Disorders
Interventions
Resonance Breathing Exercises
Other
Lead sponsor
University of Texas at Austin
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Austin, Texas
Recruiting Not applicable Interventional Accepts healthy volunteers

Cardiovascular Effects of Grieving

NCT07356635
Conditions
Grief, Cardiovascular Health, Emotion
Interventions
Value-affirmation
Behavioral
Lead sponsor
University of South Florida
Other
Eligibility
18 Years and older
Enrollment
140 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Tampa, Florida
Conditions
Autonomic Nervous System Disease, Concussive Injury, Mild Traumatic Brain Injury, Post Traumatic Stress Disorder, Persistent Post Concussion Syndrome
Interventions
HRV Coherence Ratio, NSI, Pittsburgh Sleep Quality Index (PSQI), Quantitative Sleep Measures, Patient Global Impression of Change (PGIC), Cognitive Performance/NIH Toolbox Cognitive Battery, Pain Interference/TBI-QoL Pain Interference Short-Form, Patient Health Questionnaire-9 (PHQ-9), PTSD Checklist for DSM-5 (PCL-5), HRV Biofeedback (HRV-B), Psychoeducational (Edu) Comparator Intervention
Other · Behavioral
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years and older
Enrollment
148 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
Richmond, Virginia
Conditions
Obstructive Sleep Apnea
Interventions
Not listed
Lead sponsor
Christiana Care Health Services
Other
Eligibility
18 Years to 75 Years
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
1
States / cities
Newark, Delaware
Conditions
Neonatal Resuscitation, Infant, Premature
Interventions
Electrocardiogram group, Pulse oximeter and auscultation group
Other
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
Up to 1 Hour
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Dallas, Texas
Conditions
Pulmonary Arterial Hypertension
Interventions
Home-based 6 minute walk test
Device
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 70 Years
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Stanford, California
Conditions
Laboring Women With Ultrasound and FSE Monitoring
Interventions
Not listed
Lead sponsor
OBMedical Company
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
71 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Orlando, Florida
Completed No phase listed Observational Accepts healthy volunteers Results available

Clinical Validation of Non-Contact Vital Signs

NCT07362641
Conditions
Vital Sign Evaluation
Interventions
SmartSpectra Vital Signs Monitor measurement
Device
Lead sponsor
Presage Technologies, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
111 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Houston, Texas
Not listed Not applicable Interventional Accepts healthy volunteers

A Language Intervention Study of Preterm Infants

NCT03688386
Conditions
Language Development, Language Delay, Mother-Infant Interaction, Maternal Behavior
Interventions
Reading intervention, Infant bonding, LENA recording, LENA linguistic feedback, LENA summary
Behavioral
Lead sponsor
Women and Infants Hospital of Rhode Island
Other
Eligibility
23 Weeks to 31 Weeks
Enrollment
67 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Providence, Rhode Island
Conditions
Fetal Monitoring
Interventions
Bloomlife MFM-Pro
Device
Lead sponsor
Bloom Technologies
Industry
Eligibility
18 Years and older · Female only
Enrollment
121 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
2
States / cities
Phoenix, Arizona • New Orleans, Louisiana
Recruiting No phase listed Observational Accepts healthy volunteers

Technical Development of Cardiovascular Magnetic Resonance Imaging

NCT04927429
Conditions
Cardiovascular Disease
Interventions
Not listed
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years to 100 Years
Enrollment
3,400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2031
U.S. locations
2
States / cities
Washington D.C., District of Columbia • Bethesda, Maryland