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ClinicalTrials.gov public records Last synced Oct 26, 2026, 6:21 AM EDT

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Showing 1–24 of 50 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Sympathetic response Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

Autonomic Nervous System and Chronic Fatigue Syndrome

NCT00580619
View directory record Official record
Conditions
Chronic Fatigue Syndrome, Orthostatic Intolerance, Postural Tachycardia Syndrome
Interventions
Autonomic Function Testing, Saline infusions, L-NMMA trimethaphan, methyldopa
Other · Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 65 Years
Enrollment
170 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 18, 2017 · Synced Oct 26, 2026, 6:21 AM EDT
Recruiting Not applicable Interventional

Adapting a Stress Management Intervention to Reduce Cardiovascular Disease Risk

NCT06811896
View directory record Official record
Conditions
Stress, Blood Pressure, Cardiovascular Diseases (CVD)
Interventions
Stress Management and Resiliency Training Program, Usual Care
Behavioral · Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years and older · Female only
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Sep 28, 2026 · Synced Oct 26, 2026, 6:21 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Neural Control of Kidney Blood Flow During Exercise in African American Adults

NCT03981640
View directory record Official record
Conditions
Healthy
Interventions
Acute exercise, Cold pressor test, Mental stress test
Other
Lead sponsor
University of Massachusetts, Boston
Other
Eligibility
18 Years to 35 Years
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 25, 2026 · Synced Oct 26, 2026, 6:21 AM EDT
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers

The Effects of Acute Melatonin Supplementation on Cardiovascular Responses to Sympathetic Activation

NCT04831398
View directory record Official record
Conditions
Healthy
Interventions
melatonin, Placebo
Dietary Supplement · Other
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 35 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Norman, Oklahoma
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Oct 26, 2026, 6:21 AM EDT
Withdrawn Phase 2 Interventional Accepts healthy volunteers

Skin Sympathetic Nerve Activity and Cardiac Arrhythmias

NCT02939469
View directory record Official record
Conditions
Sympathetic Nerve Activity
Interventions
Physiologic maneuvers
Other
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
18 Years to 45 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jun 14, 2019 · Synced Oct 26, 2026, 6:21 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

IR and Microvascular Blood Flow in SCI

NCT02034331
View directory record Official record
Conditions
Spinal Cord Injury, Insulin Resistance
Interventions
Insulin iontophoresis, Placebo Iontophoresis, Acetylcholine Iontophoresis, Heat application
Drug · Other
Lead sponsor
James J. Peters Veterans Affairs Medical Center
Federal
Eligibility
20 Years to 69 Years
Enrollment
68 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Mar 7, 2017 · Synced Oct 26, 2026, 6:21 AM EDT
Not listed Not applicable Interventional

Effects of Spinal Cord Injury on Female Sexual Response

NCT00142714
View directory record Official record
Conditions
Female Sexual Dysfunction, Multiple Sclerosis, Spinal Cord Injury
Interventions
Sympathetic manipulation on sexual arousal in women
Procedure
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
18 Years to 55 Years · Female only
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Oct 16, 2006 · Synced Oct 26, 2026, 6:21 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Autonomic Nervous System and Obesity

NCT00179023
View directory record Official record
Conditions
OBESITY, HYPERTENSION, PURE AUTONOMIC FAILURE, SHY-DRAGER SYNDROME
Interventions
Trimethaphan, Pseudoephedrine
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 80 Years
Enrollment
128 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 1, 2018 · Synced Oct 26, 2026, 6:21 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Sympathetic and Parasympathetic Responses to Specific Chiropractic Adjustments

NCT00632164
View directory record Official record
Conditions
Autonomic Nervous System
Interventions
Not listed
Lead sponsor
Sherman College of Straight Chiropractic
Other
Eligibility
25 Years to 55 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2008
U.S. locations
1
States / cities
Spartanburg, South Carolina
Source: ClinicalTrials.gov public record
Updated Mar 10, 2008 · Synced Oct 26, 2026, 6:21 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Microneurography and Spinal Cord Stimulation in Chronic Visceral Pain

NCT00678717
View directory record Official record
Conditions
Chronic Pain
Interventions
Autonomic Evaluation
Procedure
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 16, 2018 · Synced Oct 26, 2026, 6:21 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Mindfulness and Neural Cardiovascular Control in Humans

NCT03626363
View directory record Official record
Conditions
Elevated Blood Pressure
Interventions
Stress Management
Behavioral
Lead sponsor
Michigan Technological University
Other
Eligibility
18 Years to 45 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
1
States / cities
Hammond, Indiana
Source: ClinicalTrials.gov public record
Updated Nov 8, 2024 · Synced Oct 26, 2026, 6:21 AM EDT
Completed Not applicable Interventional

Evaluation of Injection Techniques in Celiac Plexus Neurolysis

NCT02068677
View directory record Official record
Conditions
Pancreatic Cancer, Pain
Interventions
Sympathetic response, no sympathetic response
Other
Lead sponsor
AdventHealth
Other
Eligibility
19 Years to 89 Years
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Apr 14, 2016 · Synced Oct 26, 2026, 6:21 AM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

Exploring Sympathetic Nervous System Function in Individuals With Down Syndrome

NCT07238465
View directory record Official record
Conditions
Down Syndrome, Autonomic Dysfunction
Interventions
Cold Stress, Maximal Dynamic Exercise, Isometric Handgrip Exercise with Post-Exercise Muscle Ischemia, Head-up Tilt Table Test
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 50 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2030
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Oct 13, 2026 · Synced Oct 26, 2026, 6:21 AM EDT
Completed Not applicable Interventional

Dry Needling at the Thoracolumbar Junction on Measures of Sympathetic Outflow and Flexibility

NCT03630172
View directory record Official record
Conditions
Low Back Pain
Interventions
Dry needling
Procedure
Lead sponsor
Nova Southeastern University
Other
Eligibility
18 Years to 70 Years
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Kensington, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 28, 2019 · Synced Oct 26, 2026, 6:21 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Transcutaneous Spinal Cord Neuromodulation to Normalize Autonomic Phenotypes

NCT04858178
View directory record Official record
Conditions
Spinal Cord Injuries, Autonomic Imbalance, Autonomic Dysreflexia, Orthostatic; Hypotension, Neurogenic
Interventions
Tests of sympathetic inhibition, Tests of sympathetic activation, Testing of autonomic dysreflexia, Transcutaneous spinal cord stimulation
Diagnostic Test · Device
Lead sponsor
Spaulding Rehabilitation Hospital
Other
Eligibility
18 Years to 30 Years
Enrollment
4 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 14, 2023 · Synced Oct 26, 2026, 6:21 AM EDT
Completed Phase 4 Interventional Results available

Comparison of Nebivolol and Metoprolol With Exercise and Angiotensin II in Hypertensive Patients

NCT01502787
View directory record Official record
Conditions
Hypertension
Interventions
Metoprolol succinate, Nebivolol, Forearm blood flow, Microneurography, Rhythmic handgrip exercise, Lower body negative pressure, Angiotensin II
Drug · Procedure
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jul 7, 2020 · Synced Oct 26, 2026, 6:21 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Pathophysiology of Orthostatic Intolerance

NCT00608725
View directory record Official record
Conditions
Tachycardia, Postural Orthostatic Tachycardia Syndrome
Interventions
DAXOR, QSweat, Intrinsic Heart Rate
Radiation · Procedure · Drug
Lead sponsor
Satish R. Raj
Other
Eligibility
18 Years to 80 Years
Enrollment
260 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1996 – 2029
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 13, 2026 · Synced Oct 26, 2026, 6:21 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Effectiveness of Prazosin on the Urinary Sodium Excretion Response to Mental Stress

NCT02431936
View directory record Official record
Conditions
Hypertension, Stress, Psychological, Blood Pressure
Interventions
Prazosin, Placebo
Drug
Lead sponsor
Augusta University
Other
Eligibility
18 Years to 50 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2019
U.S. locations
1
States / cities
Augusta, Georgia
Source: ClinicalTrials.gov public record
Updated Jun 20, 2019 · Synced Oct 26, 2026, 6:21 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Chemoreflex and Baroreflex Alterations Causing Postural Tachycardia Syndrome With Orthostatic Hyperpnea and Hypocapnia

NCT05923840
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome, Hypocapnia, Hyperventilation
Interventions
Chemoreflex Testing, Baroreflex testing, Orthostatic stress testing
Diagnostic Test
Lead sponsor
New York Medical College
Other
Eligibility
15 Years to 39 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Hawthorne, New York
Source: ClinicalTrials.gov public record
Updated Jun 28, 2023 · Synced Oct 26, 2026, 6:21 AM EDT
Terminated Not applicable Interventional

Effect of Meal Composition and Timing Modification on Glucose Metabolism, Body Temperature and Sleep

NCT05413928
View directory record Official record
Conditions
PreDiabetes, Type 2 Diabetes, Healthy
Interventions
Time Restrictive Eating- late, Time Restrictive Eating- early, Time Restrictive Eating- early with early caloric intake, Macronutrient-controlled meals
Behavioral · Other
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Apr 24, 2026 · Synced Oct 26, 2026, 6:21 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Noninvasive Measurement of Sympathetic Nerve Activity in Healthy Volunteers

NCT02264262
View directory record Official record
Conditions
Sympathetic Nerve Activity
Interventions
Physiologic maneuvers
Other
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
18 Years to 45 Years
Enrollment
4 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2017
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jan 14, 2020 · Synced Oct 26, 2026, 6:21 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Deciphering Preserved Autonomic Function After Multiple Sclerosis

NCT07012135
View directory record Official record
Conditions
Multiple Sclerosis, Control Subjects, Autonomic Dysreflexia
Interventions
Tests of sympathetic inhibition, Tests of sympathetic activation, Testing of autonomic dysreflexia
Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 50 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 28, 2026 · Synced Oct 26, 2026, 6:21 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

A Study to Analyze the Role of Sympathetic Nervous System in Spontaneous Coronary Artery Dissection

NCT05699200
View directory record Official record
Conditions
Spontaneous Coronary Artery Dissection, Healthy
Interventions
Arterial Tonometry, Echocardiogram, Carotid Ultrasounds, Elastography, Ankle-Brachial Index, Microneurography with sympathoexcitatory maneuvers
Other · Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older · Female only
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 17, 2026 · Synced Oct 26, 2026, 6:21 AM EDT
Terminated No phase listed Observational

Post-surgical Pain Assessment in Children: Roles of Skin Conductance and Genomics

NCT02534168
View directory record Official record
Conditions
Pain
Interventions
Skin conductance monitor for measuring skin conductance
Device
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
Up to 5 Years
Enrollment
162 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 14, 2025 · Synced Oct 26, 2026, 6:21 AM EDT