Clinical trials: Sympathetic Activity
Leiomyoma
Vascular Function and Uterine Fibroids
The purpose of this study is to learn how uterine fibroids may be connected to heart disease and high blood pressure. It is not known what causes fibroids, but they frequently occur in women who also have high blood pressure…
- Trial name
- NCT02123069
- Testing
- Brachial artery catheter, Acetylcholine, Nitroprusside
- Where
- United States
- Volunteers
- 28 people, healthy volunteers welcome
- Sponsor
- Mayo Clinic
Spinal Cord Injury
Sympathetic-Somatomotor Coupling in Human Spinal Cord Injury
Significance: The long term objective of this study is to improve physical therapy and fitness programs in people with spinal cord injury.
- Trial name
- NCT02115685
- Testing
- Treadmill Training
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Shirley Ryan AbilityLab
Coronary Artery Disease (CAD), Obstructive Sleep Apnea (OSA)
Chemoreflex Control of Sympathetic Activity in Patients With Coronary Artery Disease
The investigators hypothesize that chemoreflex response of muscle sympathetic nerve activity (MSNA) during hypoxia and hypercapnia will be increased in coronary artery disease (CAD) patients and that the presence of obstructive…
- Trial name
- NCT02624297
- Testing
- Aerobic exercise training
- Where
- Brazil
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- University of Sao Paulo General Hospital
Willis-Ekbom Disease, Restless Legs Syndrome
Analysis of Sympathetic Activity in Willis-Ekbom Disease
Willis-Ekbom disease (WED), also known as restless legs syndrome (RLS) is a common neurological sensorimotor disorder that typically impairs sleep and quality of life, likely consequent to a central dopaminergic dysfunction…
- Trial name
- MIBG-RLS (NCT02929732)
- Testing
- Sympathetic nervous activity measurement
- Where
- France
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- University Hospital, Montpellier
Healthy Volunteers, Sympathetic Activity
SPARK Study - Sympathetic Periarterial Radial Block in Healthy Volunteers
The SPARK Study evaluates changes in peripheral sympathetic vasomotor activity following a targeted, ultrasound-guided periarterial sympathetic block of the distal radial artery in healthy volunteers.
- Trial name
- SPARK (NCT07429292)
- Testing
- Lidocaine 2%
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Duke University
Nicotine Dependence
E-cigarettes, Nicotine Inhaler, and Blood Vessel Function
Randomized controlled trial of electronic cigarettes with nicotine, without nicotine, nicotine inhaler, and sham-control on endothelial function, oxidative stress and sympathetic nerve activity
- Trial name
- NCT03072628
- Testing
- e-cig with nicotine, e-cig without nicotine, nicotine inhaler
- Where
- United States
- Volunteers
- 148 people, healthy volunteers welcome
- Sponsor
- University of California, Los Angeles
Autonomic Nervous System Disease, Healthy
Study of Norepinephrine Levels and Sympathetic Nervous System Activity
Brain and nerve cells communicate with each other by releasing and picking up chemicals called neurotransmitters. Norepinephrine is a neurotransmitter used by part of the nervous system activated during stress called the…
- Conditions
- Autonomic Nervous System Disease, Healthy, Hypertension
- Trial name
- NCT00001329
- Where
- United States
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)
Fibromyalgia
The Effect of Sympathetic Dysfunction on Muscle Spindle in Fibromyalgia
This study aims to reveal whether there is an impairment in the sympathetic regulation of muscle spindle sensitivity in patients with fibromyalgia syndrome (FMS).
- Trial name
- NCT05704374
- Testing
- sympathetic stimulation maneuver (mental arithmetic test, cold pressure test), Pregabalin 150mg
- Where
- Turkey (Türkiye)
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- Istanbul Physical Medicine Rehabilitation Training and Research Hospital
Gestational Diabetes
Autonomic Nervous Activity in Women With Gestational Diabetes
Through complex hormonal pathways, insulin resistance can lead to the activation of the sympathetic nervous system, and vice versa. Schobel et al.
- Trial name
- NCT00867022
- Where
- Finland
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- University of Helsinki
Nicotine Dependence
E-Cigarettes and SNA
Randomized controlled trial of electronic cigarettes with nicotine, without nicotine, and sham control, on sympathetic nerve activity and markers of oxidative stress.
- Trial name
- NCT02724241
- Testing
- one time exposure to e-cig with nicotine, One time exposure to e-cigarette without nicotine, one time exposure to empty e-cigarette
- Where
- United States
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- University of California, Los Angeles
Hypertension
Sympathetic Transduction in Obesity
Central (abdominal) obesity is associated with elevated adrenergic activity and arterial blood pressure (BP). Therefore, we tested the hypothesis that transduction of spontaneous muscle sympathetic nerve activity (MSNA) to BP…
- Trial name
- NCT05590546
- Testing
- No intervention
- Volunteers
- 28 people, healthy volunteers welcome
- Sponsor
- University of Kansas Medical Center
Rosacea
Role of the Sympathetic Nervous System in Rosacea
Rosacea is a common skin disorder which causes facial redness and inflammation in about 16 million Americans, from an unknown cause.
- Trial name
- NCT03989492
- Testing
- systemic and local stressors
- Where
- 2 sites in United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Kristen Metzler-Wilson
Autonomic Nervous System Disease
Resonance Breathing and Postural Resonance: Acute Modulation of Autonomic and Hemodynamic Responses Via Arterial Baroreflex Mechanisms
This study aimed to compare the acute autonomic and hemodynamic effects of two arterial baroreflex resonance interventions-Resonance Breathing (RB) and Postural Resonance (PR)-in healthy young adults.
- Trial name
- Autonomic (NCT07536997)
- Testing
- Resonance Breathing, Postural Resonance
- Where
- China
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Beijing Sport University
Obstructive Sleep Apnea
Effects of Exercise Training on Cognitive Performance and Sympathetic Activity in Obstructive Sleep Apnea
Abstract Obstructive sleep apnea syndrome (OSA) is characterized by complete or partial collapse of a narrowed pharynx and it's associated with reduction in cerebral blood flow, cardiovascular disease, and neuropsychological…
- Trial name
- NCT02289625
- Testing
- Exercise Training
- Where
- Brazil
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- University of Sao Paulo General Hospital
Obesity, Ageing
Brown Adipose Tissue Activity and Age
In this study the investigators aim to investigate whether the sympathetic stimulation of BAT, as assessed with a 123I-metaiodobenzylguanidine single-photon emission computed tomography computed tomography scan, differs between…
- Trial name
- NCT02130154
- Testing
- 18-FDG PET CT scan and 123I-MIBG SPECT scan
- Where
- Netherlands
- Volunteers
- 16 people, healthy volunteers welcome
- Sponsor
- Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA)
Sleep Deprivation
Cardiovascular Effects of Partial Sleep Deprivation
Background: Sleep curtailment is common and is associated with increased mortality due to cardiovascular causes. However, the mechanisms are not completely understood.We hypothesized that partial sleep deprivation caused however…
- Trial name
- NCT00669513
- Testing
- Partial sleep deprivation
- Where
- Brazil
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- University of Sao Paulo
COPD, Sympathetic Nervous System Diseases
Sympathetic Nerve Activity Predictors in Patients With Chronic Obstructive Pulmonary Disease
The project will be pursued in our respiratory, autonomic nervous system physiology laboratory (Respiratory, autonomic nervous system physiology laboratory, Department of Pneumology and Intensive Care Medicine, RWTH Aachen…
- Conditions
- COPD, Sympathetic Nervous System Diseases, Catecholamine; Overproduction
- Trial name
- SNAP-COPD (NCT04849806)
- Testing
- Assessments of the sympathetic nerve activity axis, OSA severity, Determination of PH and right HF severity
- Where
- Germany
- Volunteers
- 135 people, healthy volunteers welcome
- Sponsor
- RWTH Aachen University
Obstructive Sleep Apnea
Weight Loss and Obstructive Sleep Apnea
The purpose of this study is to evaluate the effects of moderate energy restriction on the body adiposity, severity of OSA, blood pressure, sympathetic activity, oxidative stress, inflammatory biomarkers, metabolic profile and…
- Trial name
- NCT02206126
- Testing
- Energy Restriction
- Where
- Brazil
- Volunteers
- 21 people, healthy volunteers welcome
- Sponsor
- Rio de Janeiro State University
Hypertension
Neural Mechanism of Aldosterone-induced Insulin Resistance
Patients with high aldosterone hormone have higher blood glucose than normal people. This study is being done to understand how aldosterone hormone affects the nerve activity that controls blood flow in the muscles and blood…
- Trial name
- NCT02102243
- Testing
- DEFINITY® infusion, Human Recombinant Regular Insulin infusion, Dextrose infusion
- Where
- United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- Wanpen Vongpatanasin
Hypertension, Proteinuria
Sympathetic Overactivity in Essential Hypertension
The primary objective of the study is whether subjects with hypertension and proteinuria display increased sympathetic nerve activity compared to hypertensive subjects without proteinuria and normotensive controls.
- Trial name
- NCT00541619
- Where
- Germany
- Volunteers
- healthy volunteers welcome
- Sponsor
- University of Erlangen-Nürnberg Medical School