Clinical trials: Hypoxia, Altitude
Hypoxia, Altitude Sickness
Cardio-respiratory Responses During Hypoxic Exercise in Individuals Born Prematurely
This project will consist of two studies, each investigating resting and exercise cardio-respiratory responses during exposure to hypoxia in individuals born prematurely and individuals born at full term of two different age…
- Conditions
- Hypoxia, Altitude Sickness, Tolerance
- Trial name
- PreTerm (NCT02780908)
- Testing
- Graded exercise testing, Resting testing
- Where
- 2 sites in Slovenia
- Volunteers
- 37 people, healthy volunteers welcome
- Sponsor
- Jozef Stefan Institute
High Altitude Pulmonary Hypertension
High Altitude Residents With High Altitude Pulmonary Hypertension (HAPH), SDB Assessed at HA (3200 m) vs LA (760 m)
To study the effect of relocation from 3200m (Aksay) to 760m (Bishkek) in highlanders with High Altitude Pulmonary Hypertension (HAPH) who permanently live >2500m on sleep disordered breathing
- Trial name
- NCT06489717
- Testing
- SDB assessment
- Where
- Kyrgyzstan
- Volunteers
- 24 people
- Sponsor
- University of Zurich
Pulmonary Hypertension
Acute Exposure to High Altitude on Pulmonary Artery Pressure and Right Heart Function (Echo)
Randomized crossover Trial in patients with Pulmonary Hypertension (PAH, CTEPH) to assess the acute response to High Altitude ("Säntis"; 2500m above sea level) on pulmonary artery pressure and right heart function (echo)
- Trial name
- NCT03637166
- Testing
- Assessment at Low Altitude (470m above sea level), Exposure to High Altitude (2500m above sea level)
- Where
- Switzerland
- Volunteers
- 28 people
- Sponsor
- University of Zurich
Hypoxemia, Acute Mountain Sickness (AMS)
The Role of Acetazolamide in Mitigating Inflammation and Innate Immune Activation at High Altitude
High altitude travel can lead to inflammation in the body and activation of innate immune cells. The investigators' prior research demonstrates that 1 to 3 days at 3800 m elevation leads to increased expression of genes in blood…
- Conditions
- Hypoxemia, Acute Mountain Sickness (AMS), Inflammation, Immune Response
- Trial name
- NCT07517068
- Testing
- ACETAZOLAMIDE oral capsule
- Where
- United States
- Volunteers
- 19 people, healthy volunteers welcome
- Sponsor
- University of California, Riverside
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
Iron Deficiency Anemia, Iron Deficiency (Without Anemia)
Effect of Altitude on Iron Absorption in Iron Depleted Women
One of the most common nutritional deficiencies worldwide is iron deficiency. Iron deficiency is considered the main cause of anaemia in developing countries, including those in South America.
- Conditions
- Iron Deficiency Anemia, Iron Deficiency (Without Anemia), Altitude Hypoxia
- Trial name
- PotatoAlt (NCT05500014)
- Testing
- Biofortified potato, not genetically modified
- Where
- 2 sites in Peru
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Swiss Distance University of Applied Sciences
Chronic Respiratory Disease, Hypoxia, Altitude
Validation of a Predictive Score for HAST
Patients with chronic lung diseases travelling by plane often suffer with symptoms related to lower oxygen levels they are exposed to while flying.
- Conditions
- Chronic Respiratory Disease, Hypoxia, Altitude, COPD, ILD
- Trial name
- NCT03728595
- Testing
- Venepuncture, Spirometry, Hypoxic altitude simulation test (HAST)
- Where
- United Kingdom
- Volunteers
- 96 people
- Sponsor
- The Leeds Teaching Hospitals NHS Trust
MASLD - Metabolic Dysfunction-Associated Steatotic Liver Disease, Normobaric Hypoxia
Effects of Normobaric Hypoxic Training in Metabolic Dysfunction-Associated Steatotic Liver Disease (MASLD)
Altitude training has been suggested to be of potential support to improve some chronic clinical conditions, especially metabolic conditions.
- Trial name
- HYPOMASLD (NCT07073326)
- Testing
- HYPOTRAIN, NORMOTRAIN
- Where
- Italy
- Volunteers
- 16 people
- Sponsor
- University of Trieste
Neurocognition
Effect of Supplemental Oxygen Therapy on Neurocognitive Performance in Healthy Highlanders
Exposure to high altitudes, defined as locations above 2500 m, has been shown to cause cognitive alternations due to reduced blood oxygenation (SpO2).
- Trial name
- SPIRIT_1 (NCT07651917)
- Testing
- Supplemental oxygen therapy
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- University of Zurich
Pulmonary Hypertension
Acute Exposure of High Altitude on Cardiac Output
Randomized crossover trial in patients with Pulmonary Hypertension (PAH, CTEPH) to assess the acute response High Altitude (Säntis; 2500m above sea level) on non-invasive cardiac output assessments by Finapres® NOVA Technology at…
- Trial name
- NCT03637218
- Testing
- Assessment at Low Altitude (470m above sea level), Exposure to High Altitude (2500m above sea level)
- Where
- Switzerland
- Volunteers
- 28 people
- Sponsor
- University of Zurich
Hypoxia, Exercise
Physiological Characteristics of High Altitude Climbers
Climbing at high altitude and tolerating hypoxic environment require specific physiological adaptations. Large intersubjects differences exist regarding the ability to adapt to high altitude and hypoxia.
- Conditions
- Hypoxia, Exercise, Sport Performance
- Trial name
- ALTIPERF (NCT02880150)
- Testing
- Stress test
- Where
- France
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University Hospital, Grenoble
Altitude Hypoxia
Effect of Acetazolamide on Right Heart Function During Exercise in Lowlanders Older Than 40 Years at Altitude
Randomized, placebo controlled trial evaluating efficacy of acetazolamide on right heart function during exercise in lowlanders older than 40 years travelling from 760 m to 3'100 m.
- Trial name
- NCT03537924
- Testing
- ACETAZOLAMIDE oral capsule
- Where
- Kyrgyzstan
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- University of Zurich
Multiple System Atrophy
High-Altitude Neurodegeneration Cohort (HANC) Study
Chronic physiological hypoxia has been implicated in the pathogenesis of multiple system atrophy (MSA), a fatal neurodegenerative disorder of unknown etiology.
- Trial name
- HANC (NCT07657520)
- Testing
- No Intervention: Observational Cohort
- Where
- China
- Volunteers
- healthy volunteers welcome
- Sponsor
- West China Hospital
Altitude, Hypoxia
Endurance Performance at Altitude
The degree to which endurance exercise performance is diminished in acute hypoxia is variable and appears to be the result of several different physiological processes, however this research focuses on hypoxic pulmonary…
- Conditions
- Altitude, Hypoxia, Sildenafil, Exercise
- Trial name
- NCT03710369
- Testing
- Sildenafil
- Where
- Canada
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- University of British Columbia
Pulmonary Hypertension
Acute Exposure of Simulated Hypoxia on Pulmonary Artery Pressure and Right Heart Function (Echo)
Randomized crossover trial in patients with Pulmonary Hypertension (PAH, CTEPH) to assess the acute response to simulated altitude (FiO2:15.1, equivalent to 2500m above sea level) on pulmonary artery pressure and right heart…
- Trial name
- NCT03637088
- Testing
- Simulated Altitude (FiO2: 15.1%)
- Where
- Switzerland
- Volunteers
- 28 people
- Sponsor
- University of Zurich
Altitude Hypoxia
Effect of Acetazolamide on Visuo-motor Learning in Lowlanders Older Than 40 Years at Altitude
Randomized, placebo controlled trial evaluating the effect of acetazolamide on visuo-motor learning performance in lowlanders older than 40 years travelling from 760 m to 3'100 m.
- Trial name
- NCT03536520
- Testing
- ACETAZOLAMIDE oral capsule
- Where
- Kyrgyzstan
- Volunteers
- 59 people, healthy volunteers welcome
- Sponsor
- University of Zurich
Healthy Volunteers With Induced Hypoxia
Randomized, Double-Blind, Placebo-Controlled, Crossover Study of Trans Sodium Crocetinate in Healthy Volunteers Exercising at Altitude
This is a randomized, placebo-controlled, crossover study of Trans Sodium Crocetinate (TSC) in healthy volunteers, age 18-40 (inclusive), exercising at altitude.
- Trial name
- NCT05036980
- Testing
- Trans Sodium Crocetinate
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Diffusion Pharmaceuticals Inc
Oxidative Stress, Cell-derived Microparticles
Pik Lenin High Altitude Research Expedition 2009
Exposure to hypobaric hypoxia demands maximum effort of the body and can lead to high altitude illnesses. Recently, there is rising interest on coagulation activation during trekking and mountaineering in higher regions and on…
- Trial name
- PLHARE (NCT01571687)
- Testing
- antioxidant supplements
- Where
- Switzerland
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Insel Gruppe AG, University Hospital Bern
Metabolic Syndrome
Effects of Moderate Altitude Training on Metabolic Parameters in Voluntary Study Participants With Metabolic Syndrome
The metabolic syndrome is a cluster of metabolic disorders (obesity, hyperglycemia, dyslipidemia and hypertension) and it is a risk factor for the development of type 2 diabetes and atherosclerotic cardiovascular disease.
- Trial name
- NCT02013947
- Testing
- 2 weeks of exercise in low and moderate altitude
- Where
- Italy
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Pure Mountain Solda
High Altitude, Healthy Adult
Assessment of Total Pulmonary Resistance sPAP/CO Between High Altitude HA vs. Sea Level LA in Healthy Individuals H
To study the effect of relocation from high altitude (Quito Ecuador: 2850m) to sea level on pulmonary resistance (sPAP/CO) and other hemodynamic outcomes in healthy individuals, who live permanently >2600m.
- Conditions
- High Altitude, Healthy Adult, Echocardiography, Pulmonary Resistance
- Trial name
- NCT07804485
- Testing
- Descent from 2850m to sea level
- Where
- Switzerland
- Volunteers
- 14 people, healthy volunteers welcome
- Sponsor
- Silvia Ulrich Somaini