NASA Exercise Prebreathe Study

ClinicalTrials.gov ID: NCT07702539

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ClinicalTrials.gov public records Last synced Nov 15, 2026, 9:41 AM EST

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Official title

Exercise Prebreathe Study in Healthy Adult Volunteers to Evaluate Risk of Decompression Sickness During Simulated Spacewalk Conditions

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

This study evaluates oxygen prebreathe protocols and exercise conditions to reduce risk of decompression sickness during simulated extravehicular activity. Healthy adult volunteers will undergo oxygen prebreathe followed by hypobaric chamber exposure with monitoring for symptoms and ultrasound detection of bubbles.

Study identification

NCT ID: NCT07702539
Recruitment status: Recruiting
Study type: Interventional
Phase: Not applicable
Lead sponsor: Duke University; Other
Enrollment: 30 participants

Conditions and interventions

Conditions

Decompression Sickness

Interventions

Oxygen Prebreathe and Hypobaric Exposure Procedure

Procedure

Eligibility (public fields only)

Age range: 30 Years to 60 Years
Sex: All
Healthy volunteers: Accepts healthy volunteers

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date: Aug 13, 2026 (Actual)
Primary completion: Feb 27, 2027 (Estimated)
Completion: Feb 27, 2027 (Estimated)
Last update posted: Oct 5, 2026

2026 – 2027

United States locations

U.S. sites: 1
U.S. states: 1
U.S. cities: 1

Facility	City	State	ZIP	Site status
Duke University Medical Center	Durham	North Carolina	27710	Recruiting

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows: Public field values for ClinicalTrials.gov record NCT07702539, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do: No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from: Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh: Last update posted Oct 5, 2026 · Synced Nov 15, 2026