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Could breathing different air ease knee pain? new study tests the idea

NCT ID NCT06965946

Symptom relief Sponsor: Khyber Medical University Peshawar 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 adding a special breathing therapy (intermittent hypoxia-hyperoxia) to standard physical therapy helps people with knee osteoarthritis. Sixty adults aged 45 and older with knee pain for at least 3 months took part. The breathing therapy involved short cycles of low and high oxygen levels before each physical therapy session, three times a week for four weeks. Researchers measured pain, function, balance, and inflammation to see if the combination worked better than physical therapy alone.

What this could mean

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

Active substance
intermittent hypoxia-hyperoxia therapy (IHHT) using a hypoxia generator
What this could lead to
If it works, this could offer a new, non-drug way to ease pain and improve mobility for people with knee osteoarthritis.
What could go wrong
This is a small, early-stage trial with only 60 participants, so results may not apply to everyone. The therapy is experimental and its benefits are not yet proven.

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

60 people

The number who actually took part.

Started

May 2025

Finished

Jun 2026

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

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

Ages

45 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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: * Participants aged 45 and above. * Participants (both male and female) with knee pain for 3 months or more with any three of the following six items: age of 50 years or more, crepitations, enlarged bone, no palpable warmth, morning stiffness for less than 30 minutes, and bony tenderness. * Patients who can walk and have a minimum score of 4 on the Numeric Pain Rating Scale. * Participants who have intact cognition with a score of 24 and above on Mini Mini- Mental State examination. * Participants able to walk independently for at least 45 meters in the 6-minute walk test. * Participants having a recent X-ray (done within the past 3 months). Exclusion Criteria: * Patients with hip or knee arthroplasty. * Participants with above or below knee surgery or radiating pain to the lower limb. * Patients with history of epilepsy, pregnancy * Diagnosed neurological condition that affects lower-limb strength or walk (e.g., stroke/ basal ganglia dysfunction/ trauma) * Patients who refused to participate in the study or to be randomly allocated. * Patients receiving steroids or any medicine other than that prescribed by the screening orthopaedic surgeon.

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Conditions

The condition(s) this trial relates to.

osteoarthritis, knee

As listed by the trial registrant

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

Osteo arthritis knee

Contacts and locations

Locations

  • Rehman Medical Institute

    Peshawar, Khyber Pakhtunkhwa, 25000, Pakistan

More trials for these conditions

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