Light therapy may ease muscle fatigue from electrical stimulation
NCT ID NCT07602933
First seen Jun 24, 2026 · Last updated Aug 26, 2026 · Updated 3 times
Summary
This study tests whether shining a special light (photobiomodulation) on the thigh muscles before electrical stimulation can reduce fatigue, muscle damage, and soreness. 36 healthy adults will receive either real or fake light therapy, then undergo a series of electrical muscle contractions. Researchers will measure strength, muscle activity, and soreness over several days to see if the light helps.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- photobiomodulation (light therapy using lasers and LEDs)
- What this could lead to
- If it works, this could point toward a way to reduce muscle fatigue and soreness during rehab or training.
- What could go wrong
- This is a small, early study in healthy people, not patients. Results may not apply to real-world rehab or show clear benefits.
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 36 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jun 2026
- Expected to finish
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Sep 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 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.
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: * Healthy male and female volunteers. * Age between 18 and 45 years. * Practice physical activity regularly * No history of musculoskeletal injuries in the lower limbs in the last 6 months * Ability to tolerate NMES Exclusion Criteria: * Have sensory intolerable changes due to NMES * Consumed coffee or another stimulant in the last 12 hours * Have a body mass index (BMI) greater than 30 kg/m2 (grade I obesity) * Present any contraindication for the performance of maximum effort * Abnormal increase in blood pressure after maximal exertion
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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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Laboratório de Pesquisa do Exercício
RECRUITINGPorto Alegre, Rio Grande do Sul, 90690200, Brazil
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