Clinical trials: Hypobaric Hypoxia
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
Altitude, Hypoxia
Effects of Mild Hypobaric Hypoxia on Sleep and Post-sleep Performance
Hypobaric hypoxia (decreased oxygen supply to body tissues due to low atmospheric pressure) caused by exposure to high altitude disrupts sleep.
- Conditions
- Altitude, Hypoxia, Environmental Sleep Disorder
- Trial name
- NCT00498563
- Testing
- altitude exposure in hypobaric chamber
- Where
- United States
- Volunteers
- 34 people, healthy volunteers welcome
- Sponsor
- Oklahoma State University Center for Health Sciences
Sleep-related Respiratory Disturbance
Effects of Mild Hypobaric Hypoxia on Oxygen Saturation During Sleep
Ascent to altitude lowers oxygen saturation. In addition, sleep lowers oxygen saturation at any altitude. In a prior study, we observed that sleep at 8000 feet resulted in pronounced reduction in oxygen saturation, but did not…
- Trial name
- NCT00659009
- Testing
- Reduced barometric pressure, Sea level equivalent barometric pressure
- Where
- Canada
- Volunteers
- 16 people, healthy volunteers welcome
- Sponsor
- The Boeing Company
Major Depressive Disorder
Placebo-controlled Trial of 5-hydroxytryptophan and Creatine for SSRI or SNRI Augmentation in Treatment Resistant Depression in Females
The investigators propose to determine if 8 weeks of dietary augmentation with oral 5g creatine monohydrate daily and 100 mg of 5-hydroxytryptophan (5-HTP) twice daily reduces hypoxia-related depressive symptoms measured by the…
- Trial name
- NCT02922725
- Testing
- 5-hydroxytryptophan and Creatine
- Where
- United States
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- Brent Michael Kious, MD, PhD
Baro-reflex Sensitivity, Heart Rate Variability
Low Intensity Exercise in Different Normobaric/Hypobaric Normoxic/Hypoxic Conditions.
The main goal of this project is to investigate how low intensity cycling exercise (1.5W/kg, for 6 minutes) influences cerebral functions, such as: Cerebral blood flow, oxygenation, and other physiological variables in different…
- Conditions
- Baro-reflex Sensitivity, Heart Rate Variability, EEG, Microstates, Cerebral Blood Flow Regulation
- Trial name
- Hypoxia (NCT03439202)
- Testing
- Hypoxia
- Where
- Switzerland
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Fliegerärztliches Institut
High Altitude, Hypobaric Hypoxia
The Effect of Acute High Altitude Exposure on Rescuer Performance and Patient Care
Rescue services in mountainous regions are frequently called to missions at altitudes >3000 m. Under the difficult conditions of acute exposure to altitude, the crews then have to undertake demanding medical and rescue measures.
- Conditions
- High Altitude, Hypobaric Hypoxia, Risk Reduction
- Trial name
- NCT06446427
- Testing
- Acute high altitude exposure, Acute high altitude exposure, with supplementary oxygen, Subacute high altitude exposure, after having spent a night at high altitude
- Where
- 2 sites in Switzerland
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Insel Gruppe AG, University Hospital Bern
Hypoxia, Exercise Performance
Acetazolamide and Exercise Performance at Altitude
The goals of the present study are to evaluate whether the most common, and effective, treatment for acute mountain sickness (AMS), acetazolamide (AZ), has a negative, positive, or no influence on exercise performance, cognitive…
- Conditions
- Hypoxia, Exercise Performance, Cognitive Function, Dexterity
- Trial name
- NCT03525561
- Testing
- Acetazolamide Pill
- Where
- United States
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- United States Army Research Institute of Environmental Medicine
Changes in the Intestinal Microbiota Under Hypobaric Hypoxia Conditions, Changes in Blood Glucose Under Hypobaric Hypoxia Conditions
Program Protocol for a Population That Works in Conditions of Hypobaric Hypoxia
The objective of this randomized, longitudinal, single-blind, two-group parallel clinical trial is to evaluate the effect of a physical exercise and nutritional protocol on the health determinants of workers performing their work…
- Conditions
- Changes in the Intestinal Microbiota Under Hypobaric Hypoxia Conditions, Changes in Blood Glucose Under Hypobaric Hypoxia Conditions, Changes in Body Composition Under Hypobaric Hypoxia Conditions, Determination of Physiological Stress in Hypobaric Hypoxia
- Trial name
- NCT07624409
- Testing
- Probiotic Nutritional Intervention, Overload Exercise Protocol, Bioimpedanciometry
- Where
- Chile
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- Jorge Torres Mejías
Hypoxemia, Hypobaric Hypoxemia
Comparison of Oxygen Delivery Devices for Reversal of Altitude-Induced Hypoxemia in Normal Subjects
This study will compare the ability of pulsed-dose oxygen from a concentrator to reverse altitude-induced hypoxemia compared to compressed gas from a standard oxygen cylinder.
- Trial name
- NCT01477450
- Testing
- Pulse-dose oxygen, Cylinder oxygen delivery
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- University of Cincinnati
Gastrointestinal Injury, Acute Mountain Sickness
Gut-microbiota Targeted Nutritional Intervention for Gut Barrier Integrity at High Altitude
The aim of this randomized, crossover clinical trial is to determine the efficacy of a gut microbiota-targeted nutritional intervention containing a blend of fermentable fibers and polyphenols (FP) for mitigating increases in GI…
- Trial name
- NCT04111263
- Testing
- FP, High altitude, Sea level
- Where
- United States
- Volunteers
- 33 people, healthy volunteers welcome
- Sponsor
- United States Army Research Institute of Environmental Medicine
Glucose Metabolism, High Altitude
High Altitude and Exogenous Carbohydrate Oxidation
Recent studies have reported that oxidation of exogenous carbohydrate is reduced under acute hypobaric hypoxic (high altitude; HA) conditions compared to normoxia (sea level; SL) in native lowlanders.
- Trial name
- NCT03851744
- Testing
- Sea Level, High Altitude
- Where
- United States
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- United States Army Research Institute of Environmental Medicine
Hypoxia
High Altitude Medical Research Expedition Himlung 2013 - a Study of Human Adaption to Hypoxia
The aim of the project "High Altitude Medical Research Expedition Himlung 2013" (HiReach2013) is to comprehensively investigate the cerebral, cardiovascular and pulmonary adaptation and the reactions of the human immune system…
- Trial name
- HiReach 2013 (NCT01953198)
- Testing
- Hypobaric hypoxia
- Where
- Switzerland
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Insel Gruppe AG, University Hospital Bern
Hypobaric Hypoxia, Hypobaric Normoxia
Cognition at Altitude in HEMS - Part II
The aim of the current study is to evaluate under blinded conditions, both in a simulated environment and during helicopter flight, the effect of a rapid (within 20 minutes) exposure to altitude (4000 m asl) on physiological…
- Conditions
- Hypobaric Hypoxia, Hypobaric Normoxia, Cognitive Performance, Emergency Medicine
- Trial name
- HEMS II (NCT05073406)
- Testing
- Altitude exposure in hypobaric normoxic condition, Altitude exposure in hypobaric hypoxic condition
- Where
- Italy
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- Institute of Mountain Emergency Medicine
Normobaric Hypoxia, Hypoventilation
Influence of Hypoxic, Normobaric and Hypobaric Training on the Immunometabolism of Post-covid-19 Athletes
COVID-19 has significantly impacted sports globally, with event postponements, training disruptions, and wide-ranging concerns. SARS-CoV-2 infection can result in hyperinflammation and cardiopulmonary changes, with hypoxia as an…
- Conditions
- Normobaric Hypoxia, Hypoventilation, Normoxia
- Trial name
- NCT06128941
- Testing
- Repeated sprint
- Where
- Portugal
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Faculdade de Motricidade Humana
Hypoxia, Altitude
Analysis of Protein and Emotional Alterations During and After Hypobaric Hypoxia
This study analyses both Protein Expression and emotional alterations during hypobaric hypoxia in volunteers of different groups.
- Trial name
- DRU-EMO-K (NCT03823677)
- Testing
- Hypoxia
- Where
- Germany
- Volunteers
- 250 people, healthy volunteers welcome
- Sponsor
- Universitätsklinikum Köln
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
Acute Mountain Sickness
Effects of Aircraft Cabin Altitude on Passenger Comfort and Discomfort
Commercial aircraft passengers are exposed to atmospheric pressures ranging from the pressure found at ground level to that encountered in the external environment at 8,000 feet.
- Trial name
- NCT00326703
- Testing
- Hypobaric hypoxia
- Volunteers
- 500 people, healthy volunteers welcome
- Sponsor
- The Boeing Company
COPD, Hypoxia
Hypobaric Flight Simulation in COPD Patients
Aim of this study was to evaluate the hypoxic response during hypobaric flight simulation in normal individuals as well as in normocapnic and hypercapnic COPD patients as well as to evaluate the impact of a flight simulation on…
- Conditions
- COPD, Hypoxia, Aviation
- Trial name
- NCT02848391
- Testing
- Environmental
- Where
- Germany
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- Krankenhaus Kloster Grafschaft
Hypobaric Hypoxemia
Enhancing Operability in a Hypobaric Hypoxic Environment With a Small Oxygen Storage System
This is a study to validate the efficacy of using a small portable oxygen source to mitigate altitude-induced hypoxia.
- Trial name
- NCT03365128
- Volunteers
- healthy volunteers welcome
- Sponsor
- University of Cincinnati
Hypoxia, Altitude
Colour Vision Impairment During Acute Hypobaric Hypoxia
This study analyses the impairment of colour vision during hypobaric hypoxia in volunteers of different groups.
- Trial name
- NCT05584813
- Testing
- Hypobaric Hypoxia
- Where
- Germany
- Volunteers
- 54 people, healthy volunteers welcome
- Sponsor
- Universitätsklinikum Köln