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 22, 2026, 11:55 PM EDT

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

Showing 25–48 of 48 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Sympathetic Activity Clear all
Completed Not applicable Interventional Accepts healthy volunteers Results available

Hypoglycemia and Autonomic Nervous System Function

NCT01816893
View directory record Official record
Conditions
Hypoglycemia
Interventions
Hypoglycemic hyperinsulinemic clamp, Euglycemic hyperinsulinemic clamp
Other
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 50 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2007
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 2, 2018 · Synced Oct 22, 2026, 11:55 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Characterization of Sympathetic Nerve Activity in Stress Cardiomyopathy

NCT01048125
View directory record Official record
Conditions
Cardiomyopathy
Interventions
Sympathetic Nerve Activity, Mental Stress Test (Color Word Test), The Modified Oxford Technique for Baroreflex Sensitivity, Cold Pressor Test, Echocardiographic evaluation
Device · Behavioral · Drug + 1 more
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
21 Years to 90 Years
Enrollment
2 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Nov 23, 2016 · Synced Oct 22, 2026, 11:55 PM EDT
Terminated No phase listed Observational

Catheter Ablation of Ventricular Arrhythmia Reduces Skin Sympathetic Activity

NCT04837183
View directory record Official record
Conditions
Ventricular Tachycardia
Interventions
Not listed
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 3, 2024 · Synced Oct 22, 2026, 11:55 PM EDT
Completed Phase 2 Interventional Results available

DASH After TBI Study: Decreasing Adrenergic or Sympathetic Hyperactivity After Traumatic Brain Injury

NCT01322048
View directory record Official record
Conditions
Brain Injuries, Craniocerebral Trauma, Trauma, Nervous System, Traumatic Brain Injury
Interventions
IV Propranolol and Per Tube Clonidine, Placebo
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
16 Years to 64 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 17, 2017 · Synced Oct 22, 2026, 11:55 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Role of the Sympathetic Nervous System in Rosacea

NCT03989492
View directory record Official record
Conditions
Rosacea
Interventions
systemic and local stressors
Other
Lead sponsor
Kristen Metzler-Wilson
Other
Eligibility
18 Years to 45 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
2
States / cities
Indianapolis, Indiana • Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Sep 23, 2025 · Synced Oct 22, 2026, 11:55 PM EDT
Recruiting Not applicable Interventional

Mental Stress Reactivity in Women With CMD

NCT05401630
View directory record Official record
Conditions
Post-menopause
Interventions
Study Procedures
Other
Lead sponsor
Emory University
Other
Eligibility
45 Years and older · Female only
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
4
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jan 29, 2026 · Synced Oct 22, 2026, 11:55 PM EDT
Withdrawn Phase 3 Interventional

Mechanism of Masked Hypertension - Intervention

NCT04121299
View directory record Official record
Conditions
Masked Hypertension
Interventions
Carvedilol, Amlodipine
Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 75 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Nov 5, 2021 · Synced Oct 22, 2026, 11:55 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Meal Timing and Blood Pressure

NCT04133701
View directory record Official record
Conditions
Blood Pressure, Neurovascular Control
Interventions
Time-Restricted Feeding
Behavioral
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
50 Years to 65 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Mar 22, 2023 · Synced Oct 22, 2026, 11:55 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

E-Cigarettes and SNA

NCT02724241
View directory record Official record
Conditions
Nicotine Dependence
Interventions
one time exposure to e-cig with nicotine, One time exposure to e-cigarette without nicotine, one time exposure to empty e-cigarette
Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
21 Years to 45 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2021
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Dec 20, 2021 · Synced Oct 22, 2026, 11:55 PM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

Role of Sympathetic Activity and Splanchnic Capacitance in Hypertension

NCT02425566
View directory record Official record
Conditions
Hypertension
Interventions
Trimethaphan, Nitroglycerin
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 65 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2028
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Oct 22, 2026, 11:55 PM EDT
Not listed Phase 4 Interventional

Impact of Suvorexant on Sympathetic Nerve Activity and Baroreflex Function in Chronic Insomnia

NCT03768713
View directory record Official record
Conditions
Chronic Insomnia
Interventions
Suvorexant, Placebo
Drug
Lead sponsor
Montana State University
Other
Eligibility
18 Years to 65 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Bozeman, Montana
Source: ClinicalTrials.gov public record
Updated Oct 7, 2021 · Synced Oct 22, 2026, 11:55 PM EDT
Completed Not applicable Interventional

Cardiac Sympathetic Activity in Patients With the Apical Ballooning Syndrome

NCT00586183
View directory record Official record
Conditions
Apical Ballooning Syndrome
Interventions
PET scan
Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 4, 2008 · Synced Oct 22, 2026, 11:55 PM EDT
Withdrawn Phase 4 Interventional Accepts healthy volunteers

Neural Mechanism of Aldosterone-induced Insulin Resistance

NCT02102243
View directory record Official record
Conditions
Hypertension
Interventions
DEFINITY® infusion, Human Recombinant Regular Insulin infusion, Dextrose infusion, Flow mediated vasodilation, Endothelial cell collection, Microvascular perfusion assessment using Definity, Microneurography
Drug · Procedure
Lead sponsor
Wanpen Vongpatanasin
Other
Eligibility
18 Years to 75 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2025
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Mar 15, 2023 · Synced Oct 22, 2026, 11:55 PM EDT
Enrolling by invitation No phase listed Observational Accepts healthy volunteers

Type 1 Diabetes Autonomic and Vascular Function

NCT06786546
View directory record Official record
Conditions
Type 1 Diabetes (Juvenile Onset), Type 1 Diabetes, Diabetes, Autoimmune
Interventions
Not listed
Lead sponsor
University of Texas at Austin
Other
Eligibility
18 Years to 70 Years
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2029
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Sep 12, 2025 · Synced Oct 22, 2026, 11:55 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Study of Norepinephrine Levels and Sympathetic Nervous System Activity

NCT00001329
View directory record Official record
Conditions
Autonomic Nervous System Disease, Healthy, Hypertension
Interventions
Not listed
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
Not listed
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1992 – 2002
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Oct 22, 2026, 11:55 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Sympathetic-Somatomotor Coupling in Human Spinal Cord Injury

NCT02115685
View directory record Official record
Conditions
Spinal Cord Injury
Interventions
Treadmill Training
Other
Lead sponsor
Shirley Ryan AbilityLab
Other
Eligibility
18 Years to 75 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2020
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 6, 2021 · Synced Oct 22, 2026, 11:55 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Exploration of Blood Flow Regulation to Bone in Humans

NCT04083794
View directory record Official record
Conditions
Bone Blood Flow Regulation
Interventions
Laboratory based assessments
Other
Lead sponsor
Spaulding Rehabilitation Hospital
Other
Eligibility
18 Years to 40 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
1
States / cities
Cambridge, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 17, 2024 · Synced Oct 22, 2026, 11:55 PM 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 22, 2026, 11:55 PM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Cardiovascular and Neurovascular Regulation in GWI

NCT04586049
View directory record Official record
Conditions
Brain Blood Flow, Neurovascular Control
Interventions
MRI, Transcranial Doppler Ultrasound, Sympathetic Nerve Activity
Device · Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
45 Years to 68 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jun 8, 2026 · Synced Oct 22, 2026, 11:55 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Sympathetic Nervous System Mediation of Acute Exercise Effects on Childhood Brain and Cognition

NCT03592238
View directory record Official record
Conditions
Exercise, Cognition
Interventions
Aerobic Exercise Intervention, Trier Social Stress Test for Children, Seated Rest
Other
Lead sponsor
Northeastern University
Other
Eligibility
9 Years to 10 Years
Enrollment
297 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 22, 2025 · Synced Oct 22, 2026, 11:55 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Sympathetic Nerve Activity During Hypoglycemia and Exercise

NCT00608348
View directory record Official record
Conditions
Diabetes Mellitus
Interventions
Hyperinsulinemic glucose clamp procedures, moderate exercise
Procedure
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 40 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2008
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jun 10, 2015 · Synced Oct 22, 2026, 11:55 PM EDT
Suspended Early Phase 1 Interventional Accepts healthy volunteers

Impact of Intranasal Insulin on Sympathetic Activity and Cerebral Vasodilation

NCT05153395
View directory record Official record
Conditions
Healthy, Vasodilation, Insulin Resistance, Autonomic Dysfunction, Obesity
Interventions
Carbon dioxide breathing, Neurovascular Coupling, Human insulin
Other · Drug
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
18 Years to 45 Years
Enrollment
65 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 19, 2025 · Synced Oct 22, 2026, 11:55 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Vascular Function and Uterine Fibroids

NCT02123069
View directory record Official record
Conditions
Leiomyoma
Interventions
Brachial artery catheter, Acetylcholine, Nitroprusside, Norepinephrine, Nitroprusside and phenylephrine
Device · Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
25 Years to 50 Years · Female only
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2018
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 2, 2018 · Synced Oct 22, 2026, 11:55 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Reducing Blood Pressure in Mid-life Adult Binge Drinkers

NCT05522075
View directory record Official record
Conditions
Alcohol Drinking, Binge Drinking, Blood Pressure, Alcohol Abstinence, Aging, Lifestyle Factors, Vasodilation, Behavioral Problem
Interventions
Exercise Training, Alcohol Abstinence Intervention
Behavioral
Lead sponsor
The University of Texas at Arlington
Other
Eligibility
50 Years to 64 Years
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
1
States / cities
Arlington, Texas
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Oct 22, 2026, 11:55 PM EDT