Clinical trials: High Altitude Effects
Effect of High Altitude
Effect of High Altitude Exposure, Acclimatization and Re-exposure on Cerebral Autoregulation in Lowlanders
Prospective interventional trial in lowlanders evaluating the effect of acute exposure, acclimatization and re-exposure to high altitude on cerebral autoregulation
- Trial name
- NCT02829255
- Testing
- altitude exposure
- Where
- Switzerland
- Volunteers
- 21 people, healthy volunteers welcome
- Sponsor
- University of Zurich
Adult
Effects of RIC on Cognitive Function and Blood Oxygen Levels in Unacclimatized Adult at High Altitude
Several studies have shown cognitive impairment such as memory, perception and learning skill during ascent to high altitudes. However, few studies have directly investigated the effect of high altitudes exposure on attention-a…
- Trial name
- NCT03728114
- Testing
- RIC
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Affiliated Hospital to Academy of Military Medical Sciences
High Altitude, Inhalation; Gas
Effect of Inhalation of Low Dose CO2 on Exercise Performance at High Altitude
High altitude (>2400 m) is associated with decreased atmosphere pressure leading to hypoxia which in turn impairs exercise capacity and causes acute mountain sickness (AMS).
- Conditions
- High Altitude, Inhalation; Gas, Acute Mountain Sickness
- Trial name
- NCT05798416
- Testing
- Exercise under inhalation CO2, Exercise under inhalation ambient air
- Where
- China
- Volunteers
- 28 people, healthy volunteers welcome
- Sponsor
- State Key Laboratory of Respiratory Disease
Acute Mountain Sickness
Sickness Evaluation at Altitude With Acetazolamide at Relative Doses
The specific aim of this study is to evaluate whether acetazolamide 125mg daily is no worse than acetazolamide 250mg daily in decreasing the incidence of acute mountain sickness (AMS) in travelers to high altitude.
- Trial name
- SEAWARDII (NCT03828474)
- Testing
- Acetazolamide Pill
- Where
- United States
- Volunteers
- 108 people, healthy volunteers welcome
- Sponsor
- Stanford University
Pregnant, High Altitude
The Effect of Different Altitude Levels on Spinal Anesthesia in Cesarean Section Surgery
The aim of the researchers in this prospective study is to determine the differences, if any, in terms of anesthetic parameters among pregnant women who live at different altitudes and undergo cesarean section under neuraxial…
- Trial name
- altitude (NCT05715476)
- Testing
- cesarian surgery
- Where
- Turkey (Türkiye)
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- Giresun University
Ketogenic Dieting, Altitude Hypoxia
Effect of Isocaloric Ketogenic Diet on Physical Performance at High Altitude
A ketogenic diet (KD) reduces daily carbohydrates (CHOs) ingestion by replacing most calories with fat. KD is of increasing interest among athletes because it may increase their maximal oxygen uptake (VO2max), the principal…
- Conditions
- Ketogenic Dieting, Altitude Hypoxia, Physical Activity
- Trial name
- ICKD (NCT05603689)
- Testing
- Isocaloric ketogenic diet
- Where
- Switzerland
- Volunteers
- 8 people, healthy volunteers welcome
- Sponsor
- Clinique Romande de Readaptation
Effects of High Altitude, Hypoxia
Induced Changes in Ventilatory Responsiveness and Altitude Exposure
The main purpose of this study is to determine if a drug (acetyl-cysteine or ACCY) can increase the amount of oxygen in your body at a high altitude of 11,500 feet.
- Conditions
- Effects of High Altitude, Hypoxia, Inadequate or Impaired Breathing Pattern or Ventilation, Abnormal Blood Oxygen Pressure
- Trial name
- NCT01241513
- Testing
- NAC
- Where
- United States
- Volunteers
- 21 people, healthy volunteers welcome
- Sponsor
- United States Army Research Institute of Environmental Medicine
Effect of High Altitude
Effect of High Altitude Exposure, Acclimatization and Re-exposure on Lung Water Content by Ultrasound
Prospective interventional trial in lowlanders evaluating effect of acute exposure, acclimatization and re-exposure to high altitude.
- Trial name
- NCT02760186
- Testing
- Altitude Exposure
- Where
- Switzerland
- Volunteers
- 21 people, healthy volunteers welcome
- Sponsor
- University of Zurich
Hypobaric Hypoxia, Metabolomics
Oxidative Stress in Hypobaric Hypoxia
The trial investigates changes in metabolism during high altitude expedition up to 6865m. A mass-spectrometry based platform is used to detect different oxidative stress related metabolites.
- Conditions
- Hypobaric Hypoxia, Metabolomics, Oxidative Stress, Acute Mountain Sickness
- Trial name
- NCT01436383
- Testing
- Hypoxic exposure
- Where
- Switzerland
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- Insel Gruppe AG, University Hospital Bern
Hypoxia, Altitude, Exercise
Oxygen Transport in Normobaric vs. Hypobaric Hypoxia
1) Oxygen Transport in Normobaric versus Hypobaric Hypoxia. 2) The purpose of this study is to examine acute responses in arterial and muscle tissue oxygenation during incremental exercise in normobaric versus hypobaric hypoxia.
- Trial name
- NCT03335917
- Testing
- Hypoxia, Exercise
- Where
- United States
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- University of Nebraska
High Altitude
Protocol for Evaluating Physiological and Psychological Adaptation Mechanisms in Tibetan Plateau Environments
This study is a single-center prospective observational study. It plans to use a series of physiological and medical instruments and international common physiological and psychological questionnaires.
- Trial name
- NCT06557928
- Testing
- measurement
- Where
- China
- Volunteers
- 17 people, healthy volunteers welcome
- Sponsor
- Peking Union Medical College Hospital
Hypoxia
Intravenous Iron Effects on Performance at High Altitude
To compare the effects of IV iron versus placebo (saline) injection on arterial oxygen saturation, submaximal exercise responses, and 2-mile treadmill time-trial performance during acute exposure to hypobaric hypoxia (430 mmHg…
- Trial name
- NCT06686693
- Testing
- Injectafer
- Where
- United States
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- United States Army Research Institute of Environmental Medicine
Acute Mountain Sickness
HighCycle Study: Effect of Acetazolamide on Acute Mountain Sickness in Women Compared to Men
Millions of people travel to high altitude for work or leisure activities and are exposed to reduced inspiratory oxygen partial pressure and hypoxemia that may lead to altitude illness, among which the most common form is acute…
- Trial name
- NCT06499727
- Testing
- Acetazolamide
- Where
- Kyrgyzstan
- Volunteers
- 303 people, healthy volunteers welcome
- Sponsor
- University of Zurich
High Altitude Effects
Effect of Acetazolamide and Methazolamide on Hypoxic Exercise Performance
A single-centered randomized doubled blinded placebo-controlled cross-over trial comparing two the effect of two carbonic anhydrase inhibitors on exercise performance in acute hypoxia.
- Trial name
- NCT05575180
- Testing
- Acetazolamide 250Mg Tab, Methazolamide Pill
- Where
- Canada
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- University of Waterloo
High Altitude
Effects of Non-steroidal Anti-inflammatory Drugs (NSAIDS) on Acclimatization to High Altitude
Ibuprofen is often taken by travelers to high altitude to treat the symptoms of acute mountain sickness such as headache and malaise.
- Trial name
- NCT02233582
- Testing
- Ibuprofen, Sugar pill
- Where
- 2 sites in United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of California, San Francisco
Healthy
Biovitals Analytics Engine - Altitude Study
Unexpected adverse health events resulting in a hospital admission can be potentially avoided by leveraging novel physiological sensors combined with advanced computational techniques to predict changes in physiology prior to the…
- Trial name
- NCT03661606
- Testing
- Simulated Altitude Chamber
- Where
- Singapore
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Biofourmis Singapore Pte Ltd.
Hypoxia
The Effect of Chronic Nitrate Supplementation on Acute Mountain Sickness and Exercise Performance in Hypoxia
The study will aim to describe and evaluate the effect of chronic beetroot juice supplementation on acute mountain sickness symptoms and exercise in a hypoxic environment.
- Trial name
- NCT03101904
- Testing
- Beetroot Juice
- Where
- United Kingdom
- Volunteers
- 23 people, healthy volunteers welcome
- Sponsor
- Bangor University
Acute Mountain Sickness
Change in Peripheral Oxygen Saturation by Using Different Breathing Procedures in High Altitude
In this investigation the researchers explore whether different types of breathing procedures can improve the peripheral oxygen saturation to reduce the risk of becoming a acute mountain sickness or a high altitude pulmonary…
- Trial name
- NCT01468194
- Testing
- Breathing procedure 1, Breathing procedure 2
- Where
- Germany
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- University of Giessen
Residence or Prolonged Visit at High Altitude as the Cause of Mountain Sickness
A Study of the Effect of High Altitudes on Physiological and Metabolic Markers in Adults Living at Qinghai-Tibet Plateau for Work Purpose
This ambispective cohort study aims to evaluate the effect of high altitudes environment on human's physiological and metabolic markers, specific markers of main human systems, and incidence rate and severity of chronic mountain…
- Trial name
- NCT03446898
- Testing
- Chronic hypoxic environment
- Where
- China
- Volunteers
- 160 people, healthy volunteers welcome
- Sponsor
- Tibetan Traditional Medical College
Mountain Sickness Acute
Breathing Training to Improve Human Performance at High Altitude
Individuals traveling to altitudes above 8,000 feet may suffer from impaired exercise and cognitive performance, and acute mountain sickness (AMS).
- Trial name
- NCT03530163
- Testing
- Respiratory Muscle Training
- Where
- United States
- Volunteers
- 28 people, healthy volunteers welcome
- Sponsor
- University of Colorado, Denver