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NCT Number: NCT07361861

Evaluating Whether Hyperbaric Oxygen Therapy Can Improve VO₂-Max and Reduce Inflammation Markers in Healthy Adults Ages 30-60.

The purpose of this study is to determine whether hyperbaric oxygen therapy (HBOT) at 1.75 atmospheres of pressure (ATA) improves cardiovascular fitness (VO₂ max) and reduces inflammation in healthy adults. HBOT involves breathing pure oxygen in a pressurized chamber and is considered investigational for this use.

Recent research has shown that different HBOT pressures can have different effects on inflammation. Specifically, some inflammatory cytokines (measurable markers of inflammation in the body) appear to decrease at low pressures like 1.3 ATA, while a different set of cytokines responds better at higher pressures, such as 2.0 ATA.

Cytokines are small proteins that play a crucial role in cell signaling, particularly within the immune system. They help regulate inflammation, infection response, and overall immune function. While some cytokines promote inflammation to fight off threats, others help reduce inflammation when it's no longer needed. An imbalance in cytokines - especially excessive inflammatory cytokines - can contribute to chronic inflammation, cardiovascular disease, and other health issues.

In this study, we are testing an intermediate pressure - 1.75 ATA - to see if we can target both sets of cytokines at once. If successful, this approach could offer broader anti-inflammatory benefits.

We are also interested in how this intermediate pressure may improve VO₂ max, a key indicator of cardiovascular fitness. Since VO₂ max is strongly linked to heart health and overall longevity, finding a safe and effective way to improve it has meaningful implications not just for athletes, but for anyone looking to enhance their fitness and well-being.

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Key information

Age range

30 year–60 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

ATX Hyperbarics, Austin, Texas, United States

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Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • physically active individuals with no history of chronic illness or HBOT exposure within the last three months.

Exclusion criteria

  • individuals with contraindications to HBOT, including lung diseases or claustrophobia.

Treatment and study plan

hyperbaric oxygen therapy

Device

24 Hyperbaric Oxygen Therapy, each lasting 100 minutes, 3 times a week for 8 weeks.

Primary outcomes

  1. Cytokine levels

    Time frame: From enrollment to 4 weeks after the end of treatment (12 weeks after first treatment).

    Cytokines will be measured via blood analysis. Samples will be taken before treatment, at the midpoint, at the end, and 4 weeks post treatment. This is a measure of inflammation in the body.

  2. VO2 max testing

    Time frame: From enrollment to 4 weeks post treatment (12 weeks after first treatment)

    A treadmill VO2 max test measured before treatment, at treatment midpoint, at the end of treatment, and 4 weeks after conclusion of treatment. This is an indicator of cardiovascular health.

Study contacts

Contact information is provided by the study sponsor or research team.

Emma Lehrer, BSA Biology

CONTACT

[email protected]

7379321934

Sponsors and collaborators

Lead sponsor

University of Texas at Austin

Other

Registry information

Official study title

The Effects of Hyperbaric Oxygen Therapy at Intermediate Pressure (1.75 ATA) on VO₂ Max and Inflammatory Cytokine Profiles

Important dates

Study start
2026
Primary completion
2026
Study completion
2026
First posted
Jan 23, 2026
Registry last updated
Jan 23, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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