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ClinicalTrials.gov public records Last synced Oct 21, 2026, 5:35 AM EDT

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Showing 73–96 of 294 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Heart Rate Variability Clear all
Recruiting Not applicable Interventional Accepts healthy volunteers

Cardiovascular Effects of Grieving

NCT07356635
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Jan 21, 2026 · Synced Oct 21, 2026, 5:35 AM EDT
Completed Not applicable Interventional Results available

The Broken Heart Study II (BHS-II)

NCT04325321
View directory record Official record
Conditions
Takotsubo Cardiomyopathy
Interventions
Stress reactivity test
Other
Lead sponsor
The Miriam Hospital
Other
Eligibility
18 Years and older
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Sep 29, 2026 · Synced Oct 21, 2026, 5:35 AM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Can You Breathe Your Way To Better Health?

NCT06829836
View directory record Official record
Conditions
Cancer, Chronic Stress, Autonomic Dysfunction
Interventions
Hight intensity interval training, Cyclic Hyperventilation with Retention
Behavioral
Lead sponsor
University of Northern Colorado
Other
Eligibility
18 Years to 50 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Greeley, Colorado
Source: ClinicalTrials.gov public record
Updated Apr 25, 2025 · Synced Oct 21, 2026, 5:35 AM EDT
Recruiting Not applicable Interventional

Mindfulness and Wearable Biosensors to Prevent Hypertensive Disorders of Pregnancy

NCT07218237
View directory record Official record
Conditions
Preeclampsia
Interventions
Mindfulness training, Garmin Vivoactive 4 watch
Behavioral
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years and older · Female only
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
2
States / cities
Providence, Rhode Island • Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Sep 16, 2026 · Synced Oct 21, 2026, 5:35 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Heart Rate Variability Biofeedback for Smoking Cessation

NCT03972137
View directory record Official record
Conditions
Tobacco Smoking
Interventions
Cognitive-Behavioral Smoking Cessation, Heart Rate Variability Biofeedback (HRVB), Transdermal Nicotine patch
Behavioral · Drug
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
21 Years to 50 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Aug 25, 2020 · Synced Oct 21, 2026, 5:35 AM EDT
Completed No phase listed Observational Results available

Heart Rate Variability in Trauma Patients

NCT00795535
View directory record Official record
Conditions
Trauma
Interventions
Not listed
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older
Enrollment
95 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2014
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Feb 9, 2015 · Synced Oct 21, 2026, 5:35 AM EDT
Not listed Not applicable Interventional

The Vitality Project for Fatigued Female Cancer Survivors

NCT03259438
View directory record Official record
Conditions
Fatigue, Cancer Survivorship
Interventions
Qigong, Healthy Living (CHIP + Pre-Train)
Behavioral
Lead sponsor
The Miriam Hospital
Other
Eligibility
18 Years to 70 Years · Female only
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Aug 23, 2017 · Synced Oct 21, 2026, 5:35 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Effects of Emotional Exposure on State Anxiety

NCT03458702
View directory record Official record
Conditions
Generalized Anxiety Disorder
Interventions
YogaFit, Quiet Rest
Behavioral
Lead sponsor
Texas Tech University
Other
Eligibility
18 Years to 25 Years · Female only
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Nov 25, 2019 · Synced Oct 21, 2026, 5:35 AM EDT
Completed Not applicable Interventional

Quality of Life and Supportive Care Preferences Following Radiation Therapy in Prostate Cancer Survivors

NCT02704377
View directory record Official record
Conditions
Prostate Carcinoma
Interventions
Undergo HRV and wear accelerometer to assess therapy complications, Dual X-ray Absorptiometry, Laboratory Biomarker Analysis, Quality-of-Life Assessment, Questionnaire Administration
Other · Procedure
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
Male only
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2023
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 15, 2023 · Synced Oct 21, 2026, 5:35 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Osteopathic Manipulative Treatment and Its Relationship to Autonomic Nervous System Activity

NCT00516984
View directory record Official record
Conditions
Healthy
Interventions
Placebo, Sham, OMT
Procedure
Lead sponsor
University of Oklahoma
Other
Eligibility
19 Years to 50 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
1
States / cities
Tulsa, Oklahoma
Source: ClinicalTrials.gov public record
Updated Aug 22, 2008 · Synced Oct 21, 2026, 5:35 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Brain Health With Inner Engineering Meditation

NCT05455814
View directory record Official record
Conditions
Meditation, Brain; Agenesis
Interventions
Shambhavi Madamudra Kriya
Behavioral
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
20 Years to 65 Years
Enrollment
77 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced Oct 21, 2026, 5:35 AM EDT
Completed No phase listed Observational

Novel Real-world Methods in Social Drinkers and AUD

NCT05155176
View directory record Official record
Conditions
Alcohol Drinking, Alcohol Abuse, Alcohol Use Disorder
Interventions
Intensive Day Monitoring
Behavioral
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
54 participants
Timeline
2022 – 2023
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jan 24, 2024 · Synced Oct 21, 2026, 5:35 AM EDT
Completed Phase 1Phase 2 Interventional

Arthritis Ease Study

NCT05721352
View directory record Official record
Conditions
Knee Osteoarthritis, Chronic Pain, Kinesiophobia
Interventions
Virtual Reality Nature scene plus heart rate variability biofeedback phone application
Behavioral
Lead sponsor
Arizona State University
Other
Eligibility
45 Years to 74 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Sep 23, 2024 · Synced Oct 21, 2026, 5:35 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Listening to Calming Music

NCT06710886
View directory record Official record
Conditions
Music, Autonomic State
Interventions
Augmented Theme, Mahler Theme
Behavioral
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 89 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
2
States / cities
Gainesville, Florida • Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced Oct 21, 2026, 5:35 AM EDT
Completed Not applicable Interventional

A Study AnalyZing a NovEl Wearable SeNsor for Remote PatIent Health Monitoring

NCT03993886
View directory record Official record
Conditions
Heart Failure, Chronic Kidney Diseases
Interventions
CorBand, Activity Monitor, Bioimpedance spectrometer, ECG, respiratory rate sensor
Device · Other
Lead sponsor
ReThink Medical
Industry
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
2
States / cities
San Francisco, California • San Jose, California
Source: ClinicalTrials.gov public record
Updated Jul 17, 2020 · Synced Oct 21, 2026, 5:35 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Feasibility of Heart Rate Variability Biofeedback With In-patient Pregnant Women

NCT02119936
View directory record Official record
Conditions
Maternal Stress, Maternal Anxiety, Maternal Health Services
Interventions
Heart Rate Variability Biofeedback Tool
Behavioral
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years and older · Female only
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 19, 2018 · Synced Oct 21, 2026, 5:35 AM EDT
Recruiting No phase listed Observational

Fetal Electrophysiologic Abnormalities in High-Risk Pregnancies Associated With Fetal Demise

NCT03775954
View directory record Official record
Conditions
High Risk Pregnancy, Congenital Heart Disease, Fetal Hydrops, Twin Monochorionic Monoamniotic Placenta, Gastroschisis, Fetal Demise, Stillbirth, Fetal Arrhythmia, Long QT Syndrome, Intrauterine Fetal Death, Sudden Infant Death, Pregnancy Loss, Twin Twin Transfusion Syndrome, Birth Defect, Fetal Cardiac Anomaly, Fetal Cardiac Disorder, Fetal Death, Brugada Syndrome, Fetal Tachycardia
Interventions
Fetal Magnetocardiogram and Neonatal Electrocardiogram, Substudy only: Maternal/Infant Pharmacogenomic assessment postnatally
Diagnostic Test · Genetic
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years and older · Female only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2028
U.S. locations
2
States / cities
Madison, Wisconsin • Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Mar 4, 2026 · Synced Oct 21, 2026, 5:35 AM EDT
Completed Not applicable Interventional

Impact of Community-Based Biofeedback Program on Drug Use and Mental Health Among People Experiencing Homelessness

NCT05897580
View directory record Official record
Conditions
Heart Rate Variability
Interventions
Heart Rate Variability - Biofeedback (HRV-BF), Health Promotion (HP)
Behavioral
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years to 75 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
3
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jun 9, 2023 · Synced Oct 21, 2026, 5:35 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

L-citrulline Supplementation & Cold Exposure

NCT01462591
View directory record Official record
Conditions
Hypertension
Interventions
L-citrulline
Dietary Supplement
Lead sponsor
Florida State University
Other
Eligibility
18 Years to 35 Years · Male only
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Tallahassee, Florida
Source: ClinicalTrials.gov public record
Updated Aug 5, 2014 · Synced Oct 21, 2026, 5:35 AM EDT
Completed Not applicable Interventional

HRV-B for Symptom Management in Sickle Cell Patients

NCT03383913
View directory record Official record
Conditions
Sickle Cell Disease
Interventions
Heart Rate Variability Biofeedback
Behavioral
Lead sponsor
Prisma Health-Upstate
Other
Eligibility
10 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
1
States / cities
Greenville, South Carolina
Source: ClinicalTrials.gov public record
Updated Oct 28, 2024 · Synced Oct 21, 2026, 5:35 AM EDT
Completed Not applicable Interventional

Apple Watch Heart Failure Study

NCT04510779
View directory record Official record
Conditions
Heart Failure
Interventions
Apple Watch
Device
Lead sponsor
Tufts Medical Center
Other
Eligibility
22 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 5, 2024 · Synced Oct 21, 2026, 5:35 AM EDT
Withdrawn No phase listed Observational

Electrocardiographic Autonomic Function Measures in Mechanically Ventilated Patients

NCT00844935
View directory record Official record
Conditions
Disorders of the Autonomic Nervous System, Cardiovascular Abnormalities, Respiratory Disorders
Interventions
Not listed
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Mar 28, 2012 · Synced Oct 21, 2026, 5:35 AM EDT
Not listed Phase 1 Interventional

Biofeedback and Hydrogen Water as Treatments for Chronic Fatigue Syndrome

NCT05397626
View directory record Official record
Conditions
Chronic Fatigue Syndrome
Interventions
Heart Rhythm Biofeedback, Hydrogen Water, Combined treatment: Heart rhythm biofeedback plus hydrogen water
Behavioral · Dietary Supplement · Combination Product
Lead sponsor
Stony Brook University
Other
Eligibility
18 Years to 65 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Stony Brook, New York
Source: ClinicalTrials.gov public record
Updated May 31, 2022 · Synced Oct 21, 2026, 5:35 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Pranayama Practice on the Autonomic Nervous System

NCT03280589
View directory record Official record
Conditions
Pranayama Effect on Autonomic Nervous System, Respiration Variability Effect on Nervous System
Interventions
Sheetali/Sheekari Pranayama, Sitting Quietly, Deep breathing
Other
Lead sponsor
National University of Natural Medicine
Other
Eligibility
25 Years to 55 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Mar 24, 2023 · Synced Oct 21, 2026, 5:35 AM EDT