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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Heart rate variability Clear all
Completed Not applicable Interventional

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 Apr 12, 2026 · Synced Sep 20, 2026, 9:35 PM EDT
Completed No phase listed Observational

The Effect of Positive Airway Pressure on Heart Rate Variability

NCT00289666
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Jul 10, 2016 · Synced Sep 20, 2026, 9:35 PM EDT
Not listed Phase 1 Interventional

Nutritional Supplements on Blood Pressure 2008

NCT00609570
View directory record Official record
Conditions
Hypertension
Interventions
NanoGreens, Whey protein, Calcium pills
Dietary Supplement
Lead sponsor
Logan College of Chiropractic
Other
Eligibility
20 Years to 70 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
2
States / cities
Chesterfield, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 27, 2008 · Synced Sep 20, 2026, 9:35 PM 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 3, 2026 · Synced Sep 20, 2026, 9:35 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Relationship Between Chiropractic Care and Autonomic Nervous System Regulation

NCT05401903
View directory record Official record
Conditions
Chiropractic Maintenance Care and Heart Rate Variability
Interventions
Chiropractic Maintenance Care
Other
Lead sponsor
Northeast College of Health Sciences
Other
Eligibility
18 Years to 40 Years · Male only
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Seneca Falls, New York
Source: ClinicalTrials.gov public record
Updated Nov 17, 2023 · Synced Sep 20, 2026, 9:35 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Tailored Health Self-Management Interventions for Highly Distressed Caregivers: Family Members of Persons With Dementia

NCT04247347
View directory record Official record
Conditions
Stress, Carer Stress Syndrome, Dementia, Alzheimer Disease
Interventions
Biofeedback Training, Dementia Education, Resourcefulness Training
Behavioral · Other
Lead sponsor
Case Western Reserve University
Other
Eligibility
18 Years and older
Enrollment
92 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Sep 20, 2026, 9:35 PM EDT
Active, not recruiting No phase listed Observational

A Study of Autonomic Dynamic Dysfunction to Predict Infections After Spinal Cord Injury.

NCT03253952
View directory record Official record
Conditions
Trauma, Spinal Cord, SPINAL Fracture
Interventions
Not listed
Lead sponsor
Ohio State University
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2027
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 10, 2025 · Synced Sep 20, 2026, 9:35 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Dementia Family Caregiver Study

NCT04894006
View directory record Official record
Conditions
Dementia Caregiver
Interventions
Community Health Worker (CHW) Home Visit Intervention, Attention Control Group with WIoT Technology, Usual Care
Behavioral
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years and older
Enrollment
332 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
Irvine, California
Source: ClinicalTrials.gov public record
Updated Jul 7, 2026 · Synced Sep 20, 2026, 9:35 PM EDT
Completed Not applicable Interventional Results available

Pleth Variability Index (PVI) as a Measure of Volume Status During Transcatheter Mitral Valve Repair

NCT03993938
View directory record Official record
Conditions
Mitral Regurgitation
Interventions
PVI measurement
Device
Lead sponsor
Henry Ford Health System
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 23, 2022 · Synced Sep 20, 2026, 9:35 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

World Trade Center Adolescent Health Study

NCT02068183
View directory record Official record
Conditions
Asthma, Hypertension, Cardiovascular Risk Factor, Insulin Resistance, Stress Disorders, Post-Traumatic, Exposure to Toxic Dust
Interventions
Not listed
Lead sponsor
NYU Langone Health
Other
Eligibility
12 Years to 20 Years
Enrollment
402 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 23, 2017 · Synced Sep 20, 2026, 9:35 PM EDT
Withdrawn Not applicable Interventional

Heart Rate Variability-Guided Exercise Training in Type 2 Diabetes

NCT04910997
View directory record Official record
Conditions
Type 2 Diabetes, Diabetes Mellitus, Type 2, Type 2 Diabetes Mellitus in Obese
Interventions
Aerobic exercise training
Other
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
40 Years to 70 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 17, 2023 · Synced Sep 20, 2026, 9:35 PM EDT
Completed Phase 2 Interventional Results available

Heart Rate Variability in Response to Metformin Challenge

NCT02500628
View directory record Official record
Conditions
Fibromyalgia, Mitochondrial Diseases, Movement Disorders, Diabetes Mellitus, Type 2
Interventions
Metformin
Drug
Lead sponsor
Woodinville Psychiatric Associates
Other
Eligibility
18 Years and older
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Woodinville, Washington
Source: ClinicalTrials.gov public record
Updated Jan 2, 2018 · Synced Sep 20, 2026, 9:35 PM EDT
Not yet recruiting No phase listed Observational

Using Integrated Care and Wearable Technology to Evaluate Outcomes of the Shields & Stripes Program for Veterans and First Responders

NCT07452900
View directory record Official record
Conditions
Holistic Care, Mental Health, Sleep, PTSD, Depression - Major Depressive Disorder, Anxiety, Resilience, Recovery, Occupation, Biometrics Measurement, Veteran, Quality of Life
Interventions
Not listed
Lead sponsor
Baylor University
Other
Eligibility
18 Years to 70 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Waco, Texas
Source: ClinicalTrials.gov public record
Updated Mar 9, 2026 · Synced Sep 20, 2026, 9:35 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Randomized Study Of Novel Enuresis Alarm vs Standard Bedwetting Alarm

NCT05214131
View directory record Official record
Conditions
Bedwetting, Nocturnal Enuresis, Urinary Incontinence
Interventions
gogoband, SNEA group
Device
Lead sponsor
Yale University
Other
Eligibility
6 Years to 21 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 8, 2026 · Synced Sep 20, 2026, 9:35 PM EDT
Completed No phase listed Observational

Investigating Stress-related Mechanisms in the Laboratory and Real World in Individuals With Cannabis Use Disorder

NCT04116619
View directory record Official record
Conditions
Cannabis Use Disorder
Interventions
Guided Imagery Laboratory Session
Other
Lead sponsor
Yale University
Other
Eligibility
18 Years to 50 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 20, 2023 · Synced Sep 20, 2026, 9:35 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Continuous vs Aerobic Postexercise Hypotension

NCT03313375
View directory record Official record
Conditions
Postexercise Hypotension
Interventions
Continuous Exercise, Aerobic Interval Exercise
Other
Lead sponsor
Arizona State University
Other
Eligibility
18 Years to 55 Years
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
2
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Feb 9, 2020 · Synced Sep 20, 2026, 9:35 PM EDT
Completed Not applicable Interventional

Evaluating the Feasibility, Acceptability, and Preliminary Outcomes of Heart Rate Variability Biofeedback for Individuals With Opioid Use Disorder.

NCT07361731
View directory record Official record
Conditions
Autonomic Nervous System Imbalance, Heart Rate Variability (HRV), Opioid Use Disorder, Breathing Techniques, Opioid Craving, Recovery, Emotional Regulation, Positive and Negative Affect, Stress, Biofeedback
Interventions
Heart rate variability biofeedback
Behavioral
Lead sponsor
Arizona State University
Other
Eligibility
18 Years to 65 Years
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced Sep 20, 2026, 9:35 PM EDT
Completed Not applicable Interventional

A Noninvasive Multimodal Biosensing Device for Screening and Monitoring Response to Treatment of Infectious Respiratory Diseases

NCT05035420
View directory record Official record
Conditions
COVID-19, Upper Respiratory Infection, Lower Respiratory Infection
Interventions
Fitbit, Douglas Bag, Periflux 6000 EPOS, BIOPAC, Flowmet, NIRS
Device
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
18 Years to 78 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 4, 2025 · Synced Sep 20, 2026, 9:35 PM EDT
Recruiting Not applicable Interventional

Hydrogen Water Intervention With Heart Rate Variability as an Outcome Biomarker in ME/CFS

NCT07009691
View directory record Official record
Conditions
Chronic Fatigue Syndrome
Interventions
Hydrogen water which is prepared from an OTC supplement.
Dietary Supplement
Lead sponsor
Stony Brook University
Other
Eligibility
18 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Stony Brook, New York
Source: ClinicalTrials.gov public record
Updated Jun 7, 2025 · Synced Sep 20, 2026, 9:35 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Impact of Sodium and Fructose on Blood Pressure and Inflammation

NCT04994418
View directory record Official record
Conditions
Blood Pressure, Inflammation
Interventions
Recommended sodium and low fructose diet, High sodium and low fructose diet, High sodium and high fructose diet
Dietary Supplement
Lead sponsor
University of Delaware
Other
Eligibility
18 Years to 45 Years
Enrollment
91 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated Dec 5, 2024 · Synced Sep 20, 2026, 9:35 PM 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 21, 2008 · Synced Sep 20, 2026, 9:35 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

The Anti-Inflammatory Effects of Exercise and Peanut Consumption

NCT03212144
View directory record Official record
Conditions
Peanut Consumption, High Intensity Aerobic Exercise
Interventions
High Intensity Interval Training, Peanut Consumption
Other
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
21 Years to 45 Years
Enrollment
3 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 5, 2020 · Synced Sep 20, 2026, 9:35 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Effect of CES on Parasympathetic Tone

NCT02163967
View directory record Official record
Conditions
Autonomic Nervous System Imbalance
Interventions
Cranial Electrical Stimulation Fisher-Wallace Stimulator (Model FW100)
Device
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years to 65 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 10, 2019 · Synced Sep 20, 2026, 9:35 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Remote Physiologic Monitoring of Resident Wellness and Burnout

NCT04304703
View directory record Official record
Conditions
Resident Wellness, Resident Burnout, Sleep, Stress, Anxiety, Depression
Interventions
WHOOP strap 3.0
Device
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years and older
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 4, 2021 · Synced Sep 20, 2026, 9:35 PM EDT