Can tired muscles change how you feel pain?
NCT ID NCT07577622
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at how different levels of fatigue from leg strength exercises affect pain perception in healthy adults. 27 participants will do three sessions of leg extensions with varying fatigue levels. Researchers will measure pain sensitivity, strength, and perceived effort to understand the link between exercise fatigue and pain relief.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Strength training (leg extension machine)
- What this could lead to
- If successful, this could help design better exercise programs for pain management.
- What could go wrong
- This is a small, early-stage study in healthy volunteers, so results may not apply to people with chronic pain. The effect on pain is temporary and not a treatment.
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 27 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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May 2026
An estimate. Start dates often move.
- Expected to finish
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Jun 2027
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 45 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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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: * Healthy, asymptomatic subjects * Being physically active Exclusion Criteria: * Experiencing episodes of acute pain in any part of the body. * Having chronic pain or a recent history of chronic pain conditions considered resolved within the last 6 months. * Having a serious illness or inability to perform moderate or intense physical activity. * Having taken pain relievers, fever reducers, anti-inflammatory drugs (NSAIDs), steroids, opioids, or similar medications in the 24 hours before a session. * Having consumed alcohol or other psychoactive substances, caffeine, or other stimulants in the 24 hours before a session. * Having performed tiring physical activity or strength exercise in the 24 hours before a session.
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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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Universidad Miguel Hernández
Alicante, ALICANTE, 03550, Spain
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