Clinical trials: Diving
Physiopathology
Early Pulmonary Effects of Excursion Deep Diving With Closed-circuit Gas Recycling: SPIDD Study
Scuba diving with closed circuit gas rebreathers is currently booming. Initially developed for professional and military diving, this type of diving has become very successful in recreational activities.
- Trial name
- SPIDD (NCT05775562)
- Testing
- Pre and post dive examinations
- Where
- France
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University Hospital, Brest
Edema, Pulmonary, Immersion
Sildenafil for Swimming-Induced Pulmonary Edema (SIPE) Prevention
This trial is testing the effectiveness of a single oral dose of sildenafil (50 mg) taken 1 hour before a provocative event on the subsequent development of swimming-induced pulmonary edema.
- Conditions
- Edema, Pulmonary, Immersion, Diving
- Trial name
- NCT03686813
- Testing
- Sildenafil Citrate
- Where
- United States
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- Duke University
Barotrauma Epidemiology
Diver Ear, Nose and Throat Barotrauma Epidemiology
Ear, nose and throat barotrauma are the most frequently encountered accidents during diving. One study related to recreational diving reports that ENT barotrauma concern 10% of dives with experimented divers and 30% with novice…
- Trial name
- BTORL PAF (NCT04647591)
- Testing
- Questionnaires
- Where
- 7 sites in France
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Direction Centrale du Service de Santé des Armées
Middle-ear Barotrauma
Gas Supply, Demand and Middle Ear Gas Balance -- Fly/Dive Simulation
This study will determine if newly developed and more standard tests of Eustachian tube function can identify those persons who have ear pain (barotrauma) or develop middle-ear inflammation and/or fluid (barotitis) when they are…
- Trial name
- NCT01976429
- Testing
- flight/diving simulation, ET function testing at ambient pressure, nasal video-endoscopy
- Where
- United States
- Volunteers
- 92 people, healthy volunteers welcome
- Sponsor
- University of Pittsburgh
Immersion Pulmonary Edema (IPE), Swimming Induced Pulmonary Edema (SIPE)
Prevention and Treatment of Immersion Pulmonary Edema
Immersion pulmonary edema (IPE) is a condition in which fluid fills the lungs during diving or swimming, particularly in cold water. Some individuals appear to be predisposed to developing IPE.
- Trial name
- NCT00815646
- Testing
- Sildenafil
- Where
- United States
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- Duke University
Inappropriate ADH Syndrome
Effects of Empagliflozin an SGLT2-Inhibitor on Healthy Volunteers With Induced Hypotonic Hyponatremia - the DIVE Study
Empagliflozin (Jardiance)® is a sodium glucose co-transporter 2 (SGLT2)-Inhibitor, which is a new treatment option developed for patients with diabetes mellitus type 2.
- Trial name
- DIVE (NCT02729766)
- Testing
- Induced hypotonic hyponatremia - SIAD model, Empagliflozin 25mg Tbl
- Where
- Switzerland
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- University Hospital, Basel, Switzerland
Healthy Amateur Divers
Effects of Voluntary Neck Extension on Cerebral Blood Flow, in Breath-hold Divers Ending an Apnoea of Two Minutes or More.
The aim of this study is to demonstrate the effect of the voluntary neck extension in the occurrence of an increase in the pulsatility index of the right internal carotid artery in the amateur diver, realizing an apnea of two…
- Trial name
- APNECK (NCT03210857)
- Testing
- apnea performing
- Where
- France
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- Nantes University Hospital
Sport Physiology, Cognitive Performance
Cognitive Responses to Acute Breath-Hold Diving Training in Female Divers
This study aims to investigate the acute cognitive and physiological responses to breath-hold diving training in trained female divers.
- Trial name
- NCT07616804
- Testing
- Land-Based Breath-Hold Training, Water-Based Breath-Hold Training, Control Session
- Where
- Turkey (Türkiye)
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Istanbul Gelisim University
Diving Medicine, Inflammation
Inflammatory and Cerebrospinal Biochemical Markers in Blood After Trimix Diving
Research hypothesis Diving to depths up to 90msw with an oxygen partial pressure of 130kPa in the breathing gas will affect the central nervous system.
- Conditions
- Diving Medicine, Inflammation, Central Nervous System Injury
- Trial name
- TriMix17-18 (NCT03190252)
- Testing
- Exposure to oxygen partial pressure of 130 kPa, Exposure to ambient pressure of maximum 11 ATA
- Where
- Sweden
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- Sahlgrenska University Hospital
Oxygen Toxicity, Oxidative Stress
Effect of Hydrogen Gas on Hyperbaric Oxygen Toxicity
The goal of this trial is to investigate whether adding a small fraction of hydrogen gas to an oxygen-enriched breathing mixture can reduce pulmonary oxygen toxicity (POT) in healthy and active divers from the Swedish Armed…
- Conditions
- Oxygen Toxicity, Oxidative Stress, Hyperoxia, Hyperbaric Oxygen
- Trial name
- NCT07263399
- Testing
- Inhaled Hydrogen-Enriched Oxygen Gas, Inhaled Nitrogen-Enriched Oxygen Gas
- Where
- 2 sites in Sweden
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- Blekinge Institute of Technology
Decompression Sickness
Decreases in Diffusing Lung Capacity for Carbon Monoxide (DLCO) in Occupational Divers and Their Impact on Decompression Sickness Risks
Diving disorders and particularly Decompression sickness (DCS) represent a major concern in recreational and occupational pressure-related activities.
- Trial name
- DACODEC (NCT02736006)
- Testing
- 20 meters air dive
- Where
- France
- Volunteers
- 16 people, healthy volunteers welcome
- Sponsor
- University Hospital, Brest
Hypercapnia, Exercise
Hypercapnia: Cognitive Effects and Monitoring
The investigators will simulate the conditions of a working, helmeted diver by using exercising, "head out" immersed subjects to test the following hypotheses: 1.
- Conditions
- Hypercapnia, Exercise, Nitrogen Narcosis, Diving
- Trial name
- NCT01782625
- Testing
- NO exercise at depth, exercise at depth
- Where
- United States
- Volunteers
- 58 people, healthy volunteers welcome
- Sponsor
- Duke University
Patent Foramen Ovale, Intrapulmonary Arteriovenous Anastamosis
Is Blood Flow Through IPAVA and PFO Related to Breath-hold and SCUBA Diving-induced Pulmonary Hypertension?
In summary, the investigators propose to study elite Croatian breath-hold and SCUBA divers. The investigators will quantify breath-hold hypoxia- and SCUBA diving-induced pulmonary hypertension and right heart function to…
- Trial name
- NCT03945643
- Testing
- Sildenafil
- Where
- United States
- Volunteers
- 82 people, healthy volunteers welcome
- Sponsor
- University of Oregon
Psychological Stresses
Recreational Diving Practice for Stress Management
Within the components of Scuba diving there are similarities with meditation and mindfulness techniques. Perceived stress is known to be diminished during meditation practice.
- Trial name
- DIVSTRESS (NCT03110705)
- Testing
- sport
- Volunteers
- 67 people, healthy volunteers welcome
- Sponsor
- Institut de Recherche Biomedicale des Armees
Down Syndrome, Autonomic Dysfunction
Exploring Sympathetic Nervous System Function in Individuals With Down Syndrome
Down syndrome (DS), the most common genetic cause of intellectual disability, is associated with widespread organ dysfunction, including abnormalities in the autonomic nervous system (ANS).
- Trial name
- DIVE (NCT07238465)
- Testing
- Cold Stress, Maximal Dynamic Exercise, Isometric Handgrip Exercise with Post-Exercise Muscle Ischemia
- Where
- United States
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- University of Colorado, Denver
Chronic Disease, Arthritis
Deep Dive Randomized Control Trial
Compare two care management support program models on medical costs and utilization.
- Conditions
- Chronic Disease, Arthritis, Uterine Diseases, Spinal Diseases
- Trial name
- NCT00793260
- Testing
- Enhanced Support, Usual-Support
- Where
- United States
- Volunteers
- 174,120 people, healthy volunteers welcome
- Sponsor
- Health Dialog
Decompression Sickness, SCUBA Diving
High Intensity Cycling Before SCUBA Diving Reduces Post-decompression Microparticle Production and Neutrophil Activation
The purpose of this study is to determine the impact of high intensity,anaerobic exercise, in the form of cycling, on SCUBA diving.
- Trial name
- NCT02064361
- Testing
- High intensity exercise
- Where
- 2 sites in United States, Croatia
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- University of Split
Healthy
Can Erythropoietin Protect the Cerebral Blood Flow and Oxygenation During Simulated Dive?
During facial cooling and especially during breath hold, can mammals - and also humans - elicit a so called dive reflex, causing bradycardia, peripheral vasoconstriction and centralization of blood flow to brain, lungs and heart…
- Trial name
- NCT00265486
- Testing
- Recombinant human Erythropoietin
- Where
- Denmark
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Copenhagen University Hospital, Rigshospitalet
Decompression Sickness, Barotrauma
Health, Fitness, and Safety Knowledge as Determinants of Adverse Events in Recreational Divers in Poland
This cross-sectional online survey study assesses health status, physical fitness, and safety knowledge as potential determinants of diving-related adverse events among recreational divers in Poland.
- Conditions
- Decompression Sickness, Barotrauma, Recreational Diving
- Trial name
- DIVE-PL (NCT07855861)
- Testing
- Anonymous online questionnaire
- Where
- 2 sites in Poland
- Volunteers
- 384 people, healthy volunteers welcome
- Sponsor
- Medical University of Bialystok
Healthy Volunteers
Effects of Levocetirizine and Hydroxyzine on Cognitive and Psychomotor Functioning During Simulated Diving
Antihistamines are commonly used and currently levocetirizine is most frequently prescribed in the Netherlands. They are commonly used by divers, to solve ear, nose and throat problems, especially to open tubal passage.
- Trial name
- NCT01496911
- Testing
- Levocetirizine, Hydroxyzine
- Where
- Netherlands
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Utrecht Institute for Pharmaceutical Sciences