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ClinicalTrials.gov public records Last synced Oct 26, 2026, 2:49 PM EDT

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Showing 25–48 of 50 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Sympathetic response Clear all
Completed Early Phase 1 Interventional Accepts healthy volunteers

Pranayama Practice on the Autonomic Nervous System

NCT03280589
View directory record Official record
Conditions
Pranayama Effect on Autonomic Nervous System, Respiration Variability Effect on Nervous System
Interventions
Sheetali/Sheekari Pranayama, Sitting Quietly, Deep breathing
Other
Lead sponsor
National University of Natural Medicine
Other
Eligibility
25 Years to 55 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Mar 24, 2023 · Synced Oct 26, 2026, 2:49 PM 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, 2:49 PM EDT
Completed No phase listed Observational

The Relative Prevalence and Severity of Autonomic Nervous System Dysfunction

NCT00919347
View directory record Official record
Conditions
Cardiovascular Autonomic Neuropathy, Diabetic Autonomic Neuropathy, Autonomic Dysfunction
Interventions
ANSAR ANX 3.0 Software
Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years to 70 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated May 28, 2012 · Synced Oct 26, 2026, 2:49 PM EDT
Recruiting Not applicable Interventional

Longitudinal Autonomic Characterization as a Predictor for Secondary Medical Complications Post-SCI

NCT07210437
View directory record Official record
Conditions
Spinal Cord Injuries
Interventions
Tests of sympathetic inhibition, Tests of above level sympathetic activation, Testing of below level sympathetic activation
Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 75 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 28, 2026 · Synced Oct 26, 2026, 2:49 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 26, 2026, 2:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Deciphering Preserved Autonomic Function After Spinal Cord Injury

NCT04493372
View directory record Official record
Conditions
Spinal Cord Injuries, Autonomic Imbalance, Autonomic Dysreflexia, Orthostatic Hypotension
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
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 16, 2026 · Synced Oct 26, 2026, 2:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of SKY Breath Meditation on Health and Well-being

NCT05523414
View directory record Official record
Conditions
Stress, Stress, Psychological, Stress, Physiological, Anxiety, Mental Well Being, Happiness, Resilience
Interventions
SKY
Behavioral
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
21 Years to 99 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Mar 2, 2026 · Synced Oct 26, 2026, 2:49 PM 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, 2:49 PM 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, 2:49 PM EDT
Completed Not applicable Interventional Results available

Audiovisual Aid Pilot Study

NCT02506673
View directory record Official record
Conditions
Stress, Psychological
Interventions
Zeiss, Cinema ProMED (audiovisual equipment), Midazolam, Skin Conductance Monitor
Device · Drug
Lead sponsor
Hospital for Special Surgery, New York
Other
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 27, 2024 · Synced Oct 26, 2026, 2:49 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 26, 2026, 2:49 PM 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, 2:49 PM 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, 2:49 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Brain Receptors in Sympathetic Nervous System Regulation

NCT00029627
View directory record Official record
Conditions
Healthy
Interventions
Yohimbine
Drug
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
Not listed
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2004
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Oct 26, 2026, 2:49 PM 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, 2:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Acute Plasma Abeta Responses to Stress

NCT05521919
View directory record Official record
Conditions
Stress Reaction, Stress Physiology
Interventions
Sympathetic Nervous System Activation, No-stress
Behavioral
Lead sponsor
University of Southern California
Other
Eligibility
18 Years to 65 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Dec 10, 2025 · Synced Oct 26, 2026, 2:49 PM EDT
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, 2:49 PM 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, 2:49 PM EDT
Recruiting Not applicable Interventional

VCOM Pain Free Research Collaborative

NCT06533345
View directory record Official record
Conditions
Chronic Pain
Interventions
Behavior Change Coaching, Nutrition, Autonomic Recalibration, Dry Needling, Osteopathic Manipulative Treatment, Counseling Psychology, Multiple Treatments
Behavioral · Other · Procedure
Lead sponsor
Edward Via Virginia College of Osteopathic Medicine
Other
Eligibility
21 Years to 80 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Auburn, Alabama
Source: ClinicalTrials.gov public record
Updated Feb 20, 2026 · Synced Oct 26, 2026, 2:49 PM 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, 2:49 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

INSIGHT: Insomnia, Nightmares, and Sympathetic Hyperactivity Intervention

NCT07288593
View directory record Official record
Conditions
Nightmare, Insomnia, PTSD, TBI, Sleep Disorder (Disorder), REM Behavior Disorder
Interventions
NightWare smartwatch configured to detect physiological signs of sympathetic activation during sleep, such as heart-rate spikes and movement patterns., Sham (No Treatment)
Device
Lead sponsor
Uniformed Services University of the Health Sciences
Federal
Eligibility
18 Years to 62 Years
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
2
States / cities
Bethesda, Maryland • Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Oct 26, 2026, 2:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Vascular Responses to Sympathetic Activation and Altered Shear Rate: The Impact of Hypertension and Sodium Intake

NCT03558022
View directory record Official record
Conditions
Hypertension
Interventions
Salt Pills, Placebo Pills
Dietary Supplement
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years to 35 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Jan 13, 2023 · Synced Oct 26, 2026, 2:49 PM 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, 2:49 PM EDT
Completed Phase 1 Interventional

The Pathophysiology of Orthostatic Hypotension

NCT00748059
View directory record Official record
Conditions
Autonomic Nervous System Diseases, Orthostatic Hypotension, Dopamine Beta-Hydroxylase Deficiency, Orthostatic Intolerance
Interventions
Standing or upright tilt, Microneurography, QSweat, neck cuff stimulation, phenylephrine,isoproterenol,nitroprusside,propranolol,edrophonium,atropine,tyramine, clonidine,yohimbine,metoclopramide,alpha-methyldopa, BodPod, Eye exam, Sleep study, Pain response testing, Metabolic chamber, Brain function studies, Bicycle Exercise Test
Procedure · Device · Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
12 Years to 70 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1996 – 2020
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 12, 2021 · Synced Oct 26, 2026, 2:49 PM EDT