Clinical trials: Altitude Sickness
Hypoxia, Altitude
The Impact of Physical Training Under Normobaric Hypoxia on Oxidative Stress Level, Inflammatory State, Intestinal Damage, and Mitochondrial Metabolism in Young Males
Cognitive assessment of the influence of a 4-week proprietary training program under normobaric hypoxia conditions on the levels of inflammatory markers, disturbances in prooxidant-antioxidant balance, degree of intestinal…
- Trial name
- NCT06204731
- Testing
- Exercise and environmental conditions
- Where
- Poland
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- University School of Physical Education, Krakow, Poland
Altitude Hypoxia, Perfusion; Complications
The Pre-acclimatization Augmented Extreme Altitude Expedition
The aim of this study is to investigate the effect of pre-acclimatization in a nitrogen tent at home, ventilated with a slightly increased nitrogen percentage, in preparation for an expedition at extreme altitude.
- Trial name
- PRAGMAX (NCT05517044)
- Testing
- Nitrogen tent preacclimatization to high altitude
- Where
- Switzerland
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- University of Zurich
Hypoxia, Altitude, Cold Exposure
Effects of Physical Training in Altered Environmental Conditions on Exercise Performance
The main objective of the study is to evaluate the physiological-biochemical effects of physical training under artificially altered climatic conditions (using a hypoxic thermoclimatic chamber) in particular to determine the…
- Conditions
- Hypoxia, Altitude, Cold Exposure, Heat Exposure
- Trial name
- NCT06159374
- Testing
- exercise and environmental conditions
- Where
- Poland
- Volunteers
- 128 people, healthy volunteers welcome
- Sponsor
- University School of Physical Education, Krakow, Poland
Acute Mountain Sickness
The Effect of Continuous Positive Pressure Ventilation on Symptoms of Acute Mountain Sickness
Acute Mountain Sickness (AMS) is a common condition affecting individuals traveling to elevations greater than 2500 meters (8200 feet).
- Trial name
- NCT06145113
- Testing
- Continuous positive airway pressure (CPAP), ResMed AirMini
- Where
- Nepal
- Volunteers
- 75 people, healthy volunteers welcome
- Sponsor
- University of Colorado, Denver
Hypoxia, Altitude
The Effects of Inspiratory Muscle Training on Endurance Performance in Trained Athletes Under Normoxic and Hypoxic Conditions: A Gender-based Comprehensive Study
The POWERbreathe™ Plus: an Inspiratory Muscle Training device (IMT) with adjustable resistance. Intervention lasts 4 weeks, with a frequency of 6 days/week, 2 series of 30 inspirations in the morning and evening.
- Trial name
- RespiPerf (NCT06121128)
- Testing
- Inspiratory Muscle Training (IMT), Normal Breathing
- Volunteers
- 48 people, healthy volunteers welcome
- Sponsor
- University of Lausanne
Ketosis, Hypoxia
Intermittent Exogenous Ketosis (IEK) at High Altitude
Altitude-related hypoxia decreases human functional capacity, especially during exercise. Even with prolonged acclimatization, the physiological adaptations are insufficient to preserve exercise capacity, especially at higher…
- Trial name
- NCT06097754
- Testing
- Ketone ester
- Where
- 2 sites in Belgium, Slovenia
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- Jozef Stefan Institute
Pulmonary Vascular Disease, Pulmonary Arterial Hypertension
High Altitude (HA) Residents With Pulmonary Vascular Diseseases (PVD), Pulmonary Artery Pressure (PAP) Assessed at HA (2840m) vs Sea Level (LA)
To study the effect of relocation from 2840m (Quito) to sea level (Pedernales) in patients with pulmonary vascular diseases (PVD) defined as pulmonary arterial hypertension or chronic thromboembolic pulmonary hypertension (PH)…
- Conditions
- Pulmonary Vascular Disease, Pulmonary Arterial Hypertension, Chronic Thromboembolic Pulmonary Hypertension
- Trial name
- NCT06092424
- Testing
- Relocation from HA to LA
- Where
- Switzerland
- Volunteers
- 36 people
- Sponsor
- University of Zurich
Pulmonary Vascular Disease, Pulmonary Artery Hypertension
HA Residents With PVD, SDB Assessed at HA (2840m) vs LA (Sea Level)
To study the effect of relocation from 2840m (Quito) to sea level (Pedernales) in patients with pulmonary vascular diseases (PVD) defined as pulmonary arterial hypertension or chronic thromboembolic pulmonary hypertension (PH)…
- Conditions
- Pulmonary Vascular Disease, Pulmonary Artery Hypertension, Chronic Thromboembolic Pulmonary Hypertension
- Trial name
- NCT06072417
- Testing
- Assessment without intervention at High altitude, Relocation to sea level for 2 days
- Where
- Switzerland
- Volunteers
- 24 people
- Sponsor
- University of Zurich
Pulmonary Vascular Disease, Pulmonary Artery Hypertension
High Altitude (HA) Residents With Pulmonary Vascular Diseases (PVD), 6 Minute Walk Distance (6MWD) Assessed at 2840m (HA) With and Without Supplemental Oxygen Therapy (SOT)
The investigators aim to study the effect of SOT in participants with pulmonary vascular diseases (PVD) defined as pulmonary arterial hypertension or chronic thromboembolic pulmonary hypertension (PH) who permanently live >2500m…
- Conditions
- Pulmonary Vascular Disease, Pulmonary Artery Hypertension, Chronic Thromboembolic Pulmonary Hypertension
- Trial name
- NCT06003244
- Testing
- 6-minute walk distance (6MWD) test, 6-minute walk distance (6MWD) test with supplemental oxygen (3 l/min, nasal)
- Where
- Switzerland
- Volunteers
- 24 people
- Sponsor
- University of Zurich
Pulmonary Vascular Disease, Pulmonary Artery Hypertension
HA Residents With PVD, 6MWD Assessed at HA (2840m) vs LA (Sea Level)
To study the effect of relocation from 2840m (Quito) to sea level (Pedernales) in patients with pulmonary vascular diseases (PVD) defined as pulmonary arterial hypertension or chronic thromboembolic pulmonary hypertension (PH)…
- Conditions
- Pulmonary Vascular Disease, Pulmonary Artery Hypertension, Chronic Thromboembolic Pulmonary Hypertension
- Trial name
- NCT05996302
- Testing
- Relocation to sea level
- Where
- Switzerland
- Volunteers
- 24 people
- Sponsor
- University of Zurich
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
Ketosis, Hypoxia
Effect of Ketone Ester Supplementation on Hypoxic Tolerance
This WP specifically aims to elucidate the effects of IEK on hypoxic tolerance and the development and severity of AMS symptoms, blood and tissue oxygenation status, as well as sleep quality during an episode of acute exposure to…
- Trial name
- NCT05588427
- Testing
- Ketone ester
- Where
- Belgium
- Volunteers
- 16 people, healthy volunteers welcome
- Sponsor
- KU Leuven
Hypoxemia, Altitude Hypoxia
Effects of Continuous Positive Airway Pressure on Peripheral Oxygen Saturation, Work of Breathing, and Exercise Tolerance at Altitude
Dyspnea and exercise intolerance are well known to travelers who have experienced time at high elevations, greater than 2500 meters (8200 feet).
- Trial name
- NCT05971290
- Testing
- Continuous positive airway pressure, Ambient air
- Where
- United States
- Volunteers
- 25 people, healthy volunteers welcome
- Sponsor
- University of Colorado, Denver
Neonatal Disease, Altitude Hypoxia
Reference Interval for SPO2 in Neonates at High Altitudes During First 2 Hours and Umbilical Artery Blood Gas
Pulse oximetry offers real time and non-invasive estimation of arterial oxygen saturation in a cost-effective way, and has become a critical tool in guiding the usage of supplemental oxygen in sick newborns.
- Trial name
- NCT05468515
- Testing
- pulse oxygen saturation
- Where
- China
- Volunteers
- 956 people, healthy volunteers welcome
- Sponsor
- Children's Hospital of Fudan University
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
The Effects of Intermittent Hypoxia on Acute Hypoxic Injury
This study intends to further reveal the effectiveness of intermittent hypoxia in preventing acute hypoxic injury.
- Trial name
- NCT05733338
- Testing
- Intermittent Hypoxia
- Where
- China
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Capital Medical University
Altitude Hypoxia
Effect of Acetazolamide on Right Heart Function at Rest in Lowlanders Older Than 40 Years at Altitude.
Randomized, placebo controlled trial evaluating efficacy of acetazolamide on right heart function at rest in lowlanders older than 40 years travelling from 760 m to 3'100 m.
- Trial name
- NCT03540914
- Testing
- ACETAZOLAMIDE oral capsule
- Where
- Kyrgyzstan
- Volunteers
- 400 people, healthy volunteers welcome
- Sponsor
- University of Zurich
Acute Mountain Sickness
Colorado-Oregon Altitude Study
Investigating the utility of prophylactic treatment with iron sucrose and/or erythropoietin on the prevention of acute mountain sickness in fit, young, healthy individuals.
- Trial name
- COAST (NCT05734716)
- Testing
- Erythropoietin, Iron sucrose (Venofer), Sterile Sodium Chloride
- Where
- 2 sites in United States
- Volunteers
- 121 people, healthy volunteers welcome
- Sponsor
- University of Oregon
Chronic Obstructive Pulmonary Disease, Altitude Sickness
Acetazolamide to Prevent Impending Altitude-illness in Patients With COPD
The purpose of this randomized, placebo-controlled double-blind trial is to evaluate efficacy of acetazolamide in preventing overt altitude-related adverse health effects (ARAHE) in lowlanders with chronic obstructive pulmonary…
- Conditions
- Chronic Obstructive Pulmonary Disease, Altitude Sickness, Altitude Hypoxia
- Trial name
- NCT04913389
- Testing
- Acetazolamide
- Where
- Kyrgyzstan
- Volunteers
- 100 people
- Sponsor
- University of Zurich
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