Walking backwards could be a simple way to ease knee arthritis pain
NCT ID NCT07649863
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether walking backwards on a treadmill (called retro walking) can help reduce pain and improve how people with knee osteoarthritis walk. Participants will do retro walking sessions, starting with 10 minutes and gradually increasing up to 30 minutes if pain stays low. The study will measure pain, knee function, and movement stability using questionnaires and motion analysis. The goal is to see if this simple exercise can be a useful, low-cost therapy for knee osteoarthritis.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- retro walking (backwards walking on a treadmill)
- What this could lead to
- If effective, retro walking could offer a simple, low-cost exercise option to ease knee pain and improve walking stability for people with knee osteoarthritis.
- What could go wrong
- This is a small pilot study with only 44 participants, so results may not apply broadly. The exercise may not reduce pain for everyone, and some people might find it difficult or uncomfortable.
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
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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
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About 44 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Jul 2026
An estimate. Start dates often move.
- Expected to finish
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Dec 2026
An estimate. End dates often move.
- Lead sponsor
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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
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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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 Hide 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: * Male and female * Any ethnicity * Adults over 18 years old * Meet the UK guidelines for physical activity supported by NICE (National Institute for Health and Care Excellence) and NHS (able to exercise if it is safe with regular breaks) * Otherwise, adults with clinically diagnosed knee osteoarthritis according to NICE criteria or confirmed by a healthcare professional able and willing to participate and provide written informed consent Exclusion Criteria: * Any musculoskeletal injury * Any conditions known to affects gait (e.g. Parkinson's disease or stroke) * Any surgical intervention in the previous 12 months on lower limbs * Surgical replacement of hip or knee joints * BMI (body mass index) over 35 * Athletes or take part in significant recreational activity * Takes any medication known to affect the gait and ability to walk * Received an intra-articular injection in the last 3 months * Have been told by medical professionals that they should not take part in any intensity exercise/physical activity
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
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Other studies related to the condition(s) this trial covers.
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