Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results come from ClinicalTrials.gov. When the live registry is unavailable, a clearly labeled stored copy may be shown.

Clear filters

These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.

ClinicalTrials.gov public records Last synced Oct 21, 2026, 9:49 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 169–192 of 295 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Heart Rate Variability Clear all
Withdrawn Not applicable Interventional

Heart Rate Variability (HRV) to Evaluate Surgical Risk on Patients on Beta Blockers

NCT01330654
View directory record Official record
Conditions
Cardiac Event Risk
Interventions
metoprolol
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
40 Years to 75 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Fresno, California
Source: ClinicalTrials.gov public record
Updated Jun 27, 2012 · Synced Oct 21, 2026, 9:49 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Validation of Ejection Fraction and Cardiac Output Using Biostrap Wristband

NCT05279066
View directory record Official record
Conditions
Heart Failure
Interventions
Biostrap Wristband
Device
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 15, 2022 · Synced Oct 21, 2026, 9:49 PM EDT
Completed No phase listed Observational

HRV as a Marker of Treatment Response in PAH Arterial Hypertension

NCT04451850
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Noninvasive actigraphy monitor
Other
Lead sponsor
University of Cincinnati
Other
Eligibility
18 Years to 70 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 30, 2025 · Synced Oct 21, 2026, 9:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Self-Management Intervention: Considering Needs & Preferences of Dementia Caregivers (Caregiver Career Study)

NCT04603482
View directory record Official record
Conditions
Stress, Carer Stress Syndrome, Dementia, Alzheimer's Disease, Bereavement
Interventions
Resourcefulness training, Biofeedback, Attention Control
Behavioral
Lead sponsor
Case Western Reserve University
Other
Eligibility
18 Years and older
Enrollment
328 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated May 13, 2025 · Synced Oct 21, 2026, 9:49 PM EDT
Enrolling by invitation Not applicable Interventional

A Study of Wearable Device in Essential Tremor Patients

NCT05976074
View directory record Official record
Conditions
Essential Tremor
Interventions
Apple Watch, BrainRISE app
Device · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 2, 2026 · Synced Oct 21, 2026, 9:49 PM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Teaching Caregivers of Hospice Patients to Administer Reiki

NCT04086017
View directory record Official record
Conditions
Hospice, Pain, Anxiety, Stress
Interventions
Reiki therapy
Other
Lead sponsor
Ohio State University
Other
Eligibility
18 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 17, 2024 · Synced Oct 21, 2026, 9:49 PM EDT
Not listed Phase 1Phase 2 Interventional Accepts healthy volunteers

The Effect of Acupuncture on Blood Pressure and Heart Rate Variability (HRV)

NCT00724763
View directory record Official record
Conditions
Hypertension
Interventions
acupuncture, sham needle treatment
Device
Lead sponsor
Logan College of Chiropractic
Other
Eligibility
20 Years to 65 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2008
U.S. locations
1
States / cities
Chesterfield, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 30, 2008 · Synced Oct 21, 2026, 9:49 PM EDT
Recruiting No phase listed Observational

Observational Study Designed to Detect Decompensation of Congestive Heart Failure (dCHF) Using a Non-Invasive Wearable Device

NCT07350759
View directory record Official record
Conditions
Decompensated Chronic Heart Failure
Interventions
wearable ring device with multiple embedded sensors to detect heart rate, SVO2, respiratory rate, heart rate variability and a number of other related physiologic parameters
Device
Lead sponsor
CHFDX,Inc.
Industry
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
2
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Mar 11, 2026 · Synced Oct 21, 2026, 9:49 PM EDT
Completed No phase listed Observational

Effects of Brief Nature Exposure on Brain Functioning and Stress Reactivity

NCT07508800
View directory record Official record
Conditions
Stress (Psychology)
Interventions
Nature vs. Urban walks
Other
Lead sponsor
National Institutes of Health (NIH)
NIH
Eligibility
18 Years to 25 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jul 23, 2026 · Synced Oct 21, 2026, 9:49 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Heart Rate Variability and Emotion Regulation

NCT03458910
View directory record Official record
Conditions
Heart Rate Variability
Interventions
HRV training
Behavioral
Lead sponsor
University of Southern California
Other
Eligibility
18 Years to 80 Years
Enrollment
193 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 23, 2025 · Synced Oct 21, 2026, 9:49 PM EDT
Completed Not applicable Interventional

HRV Biofeedback in Fibromyalgia

NCT00222274
View directory record Official record
Conditions
Fibromyalgia Syndrome
Interventions
RSA Biofeedback, EEG Biofeedback Condition
Behavioral
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2011
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Feb 9, 2015 · Synced Oct 21, 2026, 9:49 PM EDT
Recruiting Not applicable Interventional

The Impact of Melatonin Lotion on Sleep and Mental Health

NCT06768749
View directory record Official record
Conditions
Sleep Problems, Depressive Disorder and Anxiety Disorders
Interventions
Melatonin lotion, Placebo lotion
Other
Lead sponsor
University of Redlands
Other
Eligibility
18 Years to 21 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
Redlands, California
Source: ClinicalTrials.gov public record
Updated May 1, 2026 · Synced Oct 21, 2026, 9:49 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

The THRIVE Study: Teaching Healthy Regulation in Individuals & Vulnerable Environments

NCT06821035
View directory record Official record
Conditions
Adverse Childhood Experiences, Family Functioning
Interventions
Garnering Resilience in Traumatized youth and families (GRIT), Digital Citizenship Curriculum (DCC)
Behavioral
Lead sponsor
University of California, Irvine
Other
Eligibility
11 Years to 14 Years
Enrollment
210 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
Irvine, California
Source: ClinicalTrials.gov public record
Updated Mar 18, 2026 · Synced Oct 21, 2026, 9:49 PM EDT
Terminated Not applicable Interventional

Syntrillo Telehealth Stroke Risk Reduction Study

NCT07124728
View directory record Official record
Conditions
Hypertension, Hypertension (HTN), Stroke Prevention, Cardiovascular Risk Factor
Interventions
Technology-enabled Telehealth Care Plan, Blood Pressure Monitoring Device, Tenovi Smart Pillbox, Wearable Activity Trackers (Fitbit or Apple Watch), Healthie EHR, Secure Messaging Platforms (TigerConnect, Weave, AirCall), Antihypertensive Medication Management, Statin Medication Management, Antiplatelet or Anticoagulant Therapy, Laboratory Blood Test Collection
Behavioral · Device · Other + 2 more
Lead sponsor
Syntrillo, Inc
Other
Eligibility
30 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Jul 30, 2026 · Synced Oct 21, 2026, 9:49 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 11, 2016 · Synced Oct 21, 2026, 9:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of External Cues Versus Internal Cues Messaging on Heart Rate Variability and Affect

NCT05309941
View directory record Official record
Conditions
Dietetics, Diet, Healthy, Nutrition Therapy, Affect, Autonomic Nervous System
Interventions
Internal Cues Nutrition Messaging, External Cues Nutrition Messaging
Other
Lead sponsor
University of Delaware
Other
Eligibility
18 Years to 29 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated Oct 11, 2023 · Synced Oct 21, 2026, 9:49 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 6, 2020 · Synced Oct 21, 2026, 9:49 PM EDT
Not yet recruiting Not applicable Interventional

Evaluation of a Mobile Wellness Application and Wearable Fitness Tracker on Weight Management and Health Outcomes

NCT07463144
View directory record Official record
Conditions
Obesity & Overweight
Interventions
App + Fitness Tracker, App Only, Control Group
Behavioral
Lead sponsor
BetterMe Limited
Industry
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Mar 11, 2026 · Synced Oct 21, 2026, 9:49 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 19, 2024 · Synced Oct 21, 2026, 9:49 PM EDT
Completed No phase listed Observational

Prediction of Extubation Readiness in Extreme Preterm Infants by the Automated Analysis of CardioRespiratory Behavior

NCT01909947
View directory record Official record
Conditions
Prediction of Extubation Readiness
Interventions
Cardiorespiratory signal acquisition
Other
Lead sponsor
McGill University Health Centre/Research Institute of the McGill University Health Centre
Other
Eligibility
Not listed
Enrollment
266 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
2
States / cities
Detroit, Michigan • Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Apr 1, 2019 · Synced Oct 21, 2026, 9:49 PM 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, 9:49 PM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Monitoring Heart Rate Variability for the Early Detection of Pancreatic Cancer

NCT04400903
View directory record Official record
Conditions
Pancreatic Ductal Adenocarcinoma, Stage I Pancreatic Cancer AJCC v8, Stage IA Pancreatic Cancer AJCC v8, Stage IB Pancreatic Cancer AJCC v8
Interventions
Activity Monitor, Quality-of-Life Assessment, Questionnaire Administration
Device · Other
Lead sponsor
OHSU Knight Cancer Institute
Other
Eligibility
50 Years to 75 Years
Enrollment
110 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
3
States / cities
Omaha, Nebraska • New York, New York • Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Nov 22, 2022 · Synced Oct 21, 2026, 9:49 PM EDT
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, 9:49 PM EDT
Completed Not applicable Interventional Results available

Diagnostic Device Risk Management of Atrial Fibrillation and Heart Failure

NCT01486316
View directory record Official record
Conditions
Atrial Fibrillation, Heart Failure
Interventions
Reveal XT® Insertable Cardiac Monitor, Heart Failure Risk Status Diagnostic
Device · Other
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
11
States / cities
La Jolla, California • Aurora, Colorado • Grand Rapids, Michigan + 8 more
Source: ClinicalTrials.gov public record
Updated Jul 12, 2018 · Synced Oct 21, 2026, 9:49 PM EDT