Clinical trials: Orthostatic Tolerance
Cardiovascular Abnormalities, Weightlessness
Electroacupuncture is Effective in Cardiac Deconditioning Induced by Head-down Bed Rest
To investigate the changes of cardiovascular function during short-term simulated weightlessness after electroacupuncture (EA) treatment．
- Trial name
- NCT02300207
- Testing
- electronic acupuncture treatment instrument
- Where
- China
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Air Force Military Medical University, China
Postural Tachycardia Syndrome
Dopamine in Orthostatic Tolerance
One goal of this study is to determine whether people with different amounts of dopamine-beta-hydroxylase (DBH) have different responses to events that affect blood pressure and heart rate.
- Trial name
- NCT00748228
- Testing
- dietary sodium
- Where
- United States
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- Vanderbilt University
Orthostatic Intolerance
Sex Hormones and Orthostatic Tolerance
This study is designed to determine the causes of "orthostatic intolerance" which occurs more commonly in women than in men. Orthostatic tolerance is the ability to remain standing up right for long periods of time, or to avoid…
- Trial name
- NCT01153581
- Testing
- Ganirelix acetate, 17β-Oestradiol, Progesterone
- Where
- United States
- Volunteers
- 109 people, healthy volunteers welcome
- Sponsor
- Yale University
Orthostatic Hypotension, Syncope
The Effect of Water Carbonation on Orthostatic Tolerance
The primary purpose of this investigation is to determine whether water carbonation can improve orthostatic tolerance in healthy control volunteers.
- Conditions
- Orthostatic Hypotension, Syncope, Vasovagal Syncope
- Trial name
- NCT05621460
- Testing
- 500mL carbonated water, 500mL still water, 50mL still water
- Where
- Canada
- Volunteers
- 25 people, healthy volunteers welcome
- Sponsor
- Simon Fraser University
Orthostatic Intolerance, Syncope
Lower Body Muscle Pre-activation in Initial Orthostatic Hypotension
This study is aimed primarily at providing a simple and effective form of treatment to reduce the symptoms of Initial Orthostatic Hypotension (IOH) and prevent syncope.
- Conditions
- Orthostatic Intolerance, Syncope, Fainting, Presyncope
- Trial name
- IOH (NCT03970551)
- Testing
- Physical Counter-maneuver, Stress Test, Functional Electrical Stimulation
- Where
- Canada
- Volunteers
- 64 people, healthy volunteers welcome
- Sponsor
- University of Calgary
Orthostatic Tolerance
Racial Differences in Orthostatic Tolerance
Our central hypothesis is that baroreflex sensitivity is attenuated in black women compared to white women, and that this dysregulation will be apparent during orthostatic challenges.
- Trial name
- NCT00844181
- Where
- United States
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- Yale University
Healthy
Effect of Dietary Salt Supplemantation in Vasovagal Syncope Prophylaxis: A Clinical Trial
Syncope is a syndrome consisting of a relatively short period of temporary and self-limited loss of consciousness caused by transient diminution of blood flow to the brain (most often the result of systemic hypotension).
- Trial name
- NCT00465946
- Testing
- Salt Supplementation
- Where
- Brazil
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Hospital de Clinicas de Porto Alegre