Knee pain breakthrough? HMB supplement may speed athlete recovery
NCT ID NCT07466407
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether taking a supplement called HMB, along with a standard rehab program, can reduce pain and improve knee function in athletes with patellar tendinopathy (jumper's knee). Thirty athletes will receive either HMB or a placebo for 8 weeks. Researchers will measure pain, tendon thickness, and jumping performance to see if HMB provides extra benefits.
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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 30 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Mar 2026
An estimate. Start dates often move.
- Expected to finish
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Jul 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 to 49 years
- 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.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Age between 18 and 49 years * Clinical diagnosis of patellar tendinopathy confirmed by a physician and physiotherapist * Competitive athlete in sports involving repetitive knee loading (e.g., basketball, volleyball, handball, athletics) * Minimum training frequency of three sessions per week * No knee surgery within the previous 12 months * No nutritional supplementation within the previous 3 months * No injection therapy (analgesics or platelet-rich plasma) within the previous 12 months * Non-smoker * Signed informed consent Exclusion Criteria: * Any musculoskeletal injury other than patellar tendinopathy affecting performance * Systemic disease affecting musculoskeletal function * Inability to comply with the rehabilitation or supplementation protocol
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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 places running it
1 site. The list below names each one and where it is.
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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.
Contacts and locations
Locations
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Clínica Fisio-Agil
Córdoba, Córdoba, 14007, Spain
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Other studies related to the condition(s) this trial covers.
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- Jump start recovery: new study tests early plyometrics for tendon pain
- Jumping knee injury study reveals hidden movement differences