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Showing 1–24 of 445 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Heart Rate Clear all
Terminated No phase listed Observational

Determination of the Accuracy of a Non-Invasive Continuous Blood Pressure Device

NCT01311128
View directory record Official record
Conditions
Critically Ill
Interventions
T-line hemodynamic monitoring device (placement and use)
Device
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years and older
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Aug 27, 2019 · Synced Jul 21, 2026, 4:50 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effect on the Electrocardiographic QT Interval Corrected for Heart Rate (QTc) in Healthy Subjects

NCT00979316
View directory record Official record
Conditions
Alzheimer Disease
Interventions
BMS-708163, Placebo, Moxifloxacin
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 55 Years
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Jan 6, 2011 · Synced Jul 21, 2026, 4:50 PM EDT
Completed Not applicable Interventional Results available

Relaxation and Heart Rate Variability

NCT00735618
View directory record Official record
Conditions
Cancer
Interventions
Guided Relaxation
Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
Not listed
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 18, 2011 · Synced Jul 21, 2026, 4:50 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

The Association Between Fluid Administration, Oxytocin Administration, and Fetal Heart Rate Changes

NCT00787176
View directory record Official record
Conditions
Pregnancy, Labor Pain
Interventions
Group A Intravenous bolus of 1000 ml lactated ringers solution, Group B Intravenous bolus bolus 1000 ml lactated ringers solution oxytocin decrease to 1/2 current rate, Group C 125 mL/hr of lactated ringers, Group D 125 mL/hr lactated ringers oxytocin decreased to 1/2 current rate
Drug
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 60 Years · Female only
Enrollment
251 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2012
U.S. locations
2
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 12, 2022 · Synced Jul 21, 2026, 4:50 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 Jul 21, 2026, 4:50 PM EDT
Completed Phase 4 Interventional Results available

To Evaluate the Effect of Liraglutide on Ambulatory Blood Pressure-A Pilot Study

NCT02299388
View directory record Official record
Conditions
Diabetes Mellitus, Non-Insulin-Dependent, Hypertensive Disease
Interventions
Liraglutide or Placebo
Drug
Lead sponsor
Tulane University School of Medicine
Other
Eligibility
18 Years to 75 Years
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Jan 26, 2021 · Synced Jul 21, 2026, 4:50 PM EDT
Completed No phase listed Observational

Treatment of Reduced Heart Rate Variability Associated With Major Depression With Electroconvulsive Therapy

NCT00209066
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
Not listed
Lead sponsor
Emory University
Other
Eligibility
18 Years to 90 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1998 – 2005
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Nov 18, 2013 · Synced Jul 21, 2026, 4:50 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Effect of High-Intensity Gait Training Using a Treadmill on Locomotion Recovery in Traumatic Brain Injury Patients

NCT05622786
View directory record Official record
Conditions
Traumatic Brain Injury, Gait Disorders, Neurologic
Interventions
HIGT - physical rehab, Low intensity physical therapy
Other
Lead sponsor
Carilion Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Roanoke, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 18, 2024 · Synced Jul 21, 2026, 4:50 PM EDT
Completed Phase 2 Interventional

Acceptability and Feasibility of Apollo in Veterans With a History of PTSD

NCT05019651
View directory record Official record
Conditions
PTSD
Interventions
Apollo Wearable System
Device
Lead sponsor
Lisa Brenner
Federal
Eligibility
18 Years to 65 Years
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Nov 16, 2025 · Synced Jul 21, 2026, 4:50 PM EDT
Completed Not applicable Interventional

Coherence Training for Military Personnel

NCT01599598
View directory record Official record
Conditions
Stress
Interventions
Progressive Muscle Relaxation, Coherence Advantage
Behavioral
Lead sponsor
United States Naval Medical Center, San Diego
Federal
Eligibility
Not listed
Enrollment
192 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Aug 18, 2016 · Synced Jul 21, 2026, 4:50 PM EDT
Not listed Phase 3 Interventional

Cardiac CAtheterization for Bypass Graft Patency Rate Optimization: the CABG-PRO Randomized-controlled Pilot Study

NCT01063491
View directory record Official record
Conditions
Coronary Artery Bypass Graft Surgery
Interventions
bypass graft angiography
Procedure
Lead sponsor
North Texas Veterans Healthcare System
Federal
Eligibility
18 Years and older
Enrollment
170 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Oct 31, 2013 · Synced Jul 21, 2026, 4:50 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Investigating Real-world Stress-related Mechanisms in Heavy Cannabis Users

NCT05833230
View directory record Official record
Conditions
Cannabis Use, Cannabis, Cannabis Abuse
Interventions
Intensive Day Monitoring
Other
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 3, 2025 · Synced Jul 21, 2026, 4:50 PM EDT
Completed Phase 3 Interventional Results available

Harmonizing Outcomes With Revascularization and Stents in Acute Myocardial Infarction

NCT00433966
View directory record Official record
Conditions
Myocardial Infarction
Interventions
Bivalirudin, Unfractionated heparin, Bare metal stent, Paclitaxel-eluting stent
Drug · Device
Lead sponsor
Cardiovascular Research Foundation, New York
Other
Eligibility
18 Years and older
Enrollment
3,602 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
1
States / cities
Greensboro, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 3, 2017 · Synced Jul 21, 2026, 4:50 PM EDT
Completed No phase listed Observational

Gestational Diabetes and Sleep-Disordered Breathing

NCT00933881
View directory record Official record
Conditions
Gestational Diabetes Mellitus
Interventions
Determining a change in heart rate variability post delivery of the baby
Other
Lead sponsor
Christiana Care Health Services
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2016
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated Jul 13, 2016 · Synced Jul 21, 2026, 4:50 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Hot Water Immersion on Heart Rate Variability and Glucose

NCT06193291
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Jan 7, 2024 · Synced Jul 21, 2026, 4:50 PM EDT
Completed Not applicable Interventional

Behavior Change Family Counseling to Reduce Rate of Weight Gain in At-Risk Children

NCT00241891
View directory record Official record
Conditions
Cardiovascular Diseases, Heart Diseases, Obesity
Interventions
Single behavior intervention, Multiple behavior interventions, Control Intervention unrelated to weight
Behavioral
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
8 Years to 12 Years
Enrollment
158 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2015
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 6, 2015 · Synced Jul 21, 2026, 4:50 PM EDT
Terminated Phase 3 Interventional Results available

Efficacy and Safety of Etripamil for the Termination of Spontaneous Paroxysmal Supraventricular Tachycardia (PSVT).

NCT03464019
View directory record Official record
Conditions
Paroxysmal Supraventricular Tachycardia
Interventions
Etripamil, Placebo, Etripamil Test Dose
Drug
Lead sponsor
Milestone Pharmaceuticals Inc.
Other
Eligibility
18 Years and older
Enrollment
1,097 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
54
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Cerritos, California + 44 more
Source: ClinicalTrials.gov public record
Updated Jul 11, 2024 · Synced Jul 21, 2026, 4:50 PM EDT
Terminated No phase listed Observational Results available

Intraoperative Fetal Heart Rate (FHR) Monitoring: a Feasibility Study

NCT02950896
View directory record Official record
Conditions
Fetal Monitoring, Labor, Obstetric
Interventions
observational fetal heart rate monitoring
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated May 9, 2019 · Synced Jul 21, 2026, 4:50 PM EDT
Completed Phase 3 Interventional Results available

Rate Control Versus Rhythm Control For Postoperative Atrial Fibrillation

NCT02132767
View directory record Official record
Conditions
Postoperative Atrial Fibrillation
Interventions
Amiodarone, DC-cardioversion, Rate Control
Drug · Procedure
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
523 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
17
States / cities
Los Angeles, California • Atlanta, Georgia • Baltimore, Maryland + 13 more
Source: ClinicalTrials.gov public record
Updated Mar 14, 2019 · Synced Jul 21, 2026, 4:50 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

The Effects of Mid-thoracic Manipulation on Heart Rate Variability.

NCT02379871
View directory record Official record
Conditions
Neurophysiological Mechanisms Underlying Spinal Manipulation
Interventions
Experimental Group, Sham Group
Other
Lead sponsor
Mount St. Mary's College, Los Angeles, CA
Other
Eligibility
18 Years to 55 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 4, 2015 · Synced Jul 21, 2026, 4:50 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Acute Effect of and Energy Drink vs. Water Consumption on MAP, HR, and Energy Metabolism

NCT06330649
View directory record Official record
Conditions
Cardiovascular Diseases, Hypertension, Diet
Interventions
Energy Drink, Water Control
Dietary Supplement · Other
Lead sponsor
The University of Texas at Arlington
Other
Eligibility
18 Years to 30 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Arlington, Texas
Source: ClinicalTrials.gov public record
Updated Mar 31, 2025 · Synced Jul 21, 2026, 4:50 PM EDT
Not listed No phase listed Observational

The Fetal EKG Study

NCT02320279
View directory record Official record
Conditions
Labor
Interventions
Fetal Heart Rate Monitor
Device
Lead sponsor
Mindchild Medical Inc.
Industry
Eligibility
18 Years and older · Female only
Enrollment
900 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2023
U.S. locations
1
States / cities
South Weymouth, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 15, 2021 · Synced Jul 21, 2026, 4:50 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

The Effects of Single-Pulse Transcranial Magnetic Stimulation on the Autonomic Nervous System in Healthy Adults

NCT02833220
View directory record Official record
Conditions
Healthy
Interventions
Single-Pulse Transcranial Magnetic Stimulation
Device
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 15, 2019 · Synced Jul 21, 2026, 4:50 PM EDT
Withdrawn No phase listed Observational

Effect of Local Anesthetic on Hemodynamic Measures During Nasal Surgery

NCT01701960
View directory record Official record
Conditions
Heart Rate, Blood Pressure, Blood Loss During Surgery, Surgical Field
Interventions
Not listed
Lead sponsor
Loma Linda University
Other
Eligibility
16 Years to 75 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Mar 19, 2015 · Synced Jul 21, 2026, 4:50 PM EDT