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Oxygen therapy may give athletes an edge

NCT ID NCT03524989

Knowledge-focused Sponsor: Assaf-Harofeh Medical Center Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested whether 40 sessions of hyperbaric oxygen therapy (breathing pure oxygen in a pressurized chamber) could improve aerobic and anaerobic fitness in healthy athletes. 59 participants, aged 18-25 or 40-50, underwent either real or sham treatment over two months. Researchers measured changes in VO2 max and muscle respiration to see if the therapy enhances performance.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Hyperbaric Oxygen Therapy (device)
What this could lead to
If it works, this could show that hyperbaric oxygen boosts physical performance in athletes, potentially leading to new training methods.
What could go wrong
This is a small, early-stage study with only 59 healthy participants. The results may not apply to the general population or to people with health conditions.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

59 people

The number who actually took part.

Started

May 2018

Finished

Sep 2021

Lead sponsor

A government agency

The lead sponsor is a government body.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 50 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * 18-25 or 40-50 age * Professional performance of aerobic sports for ages 18-25 (at least 5 times a week) * Moderate and above performance of aerobic sports for ages 40-50 (at least 4 times a week) * no chronic illness * no significant musculoskeletal injury in the past 3 months Exclusion Criteria: * Debilitating significant musculoskeletal injury * Previous hyperbaric oxygen exposure * Lung pathology * Middle or Inner ear pathology * Claustrophobia * Chronic illness * Smoking * Chronic medications

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Conditions

The condition(s) this trial relates to.

tinea pedis

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Athletes Healthy

Contacts and locations

Locations

  • Assaf-Harofeh Medical Center

    Ramla, 70300, Israel

More trials for these conditions

Other studies related to the condition(s) this trial covers.