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Laser zaps tendons: can light change tissue structure?

NCT ID NCT07817368

Knowledge-focused Sponsor: Centro Universitario La Salle Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 This study
Running, but no longer taking on new participants.
Completed
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Sep 14, 2026 · Last updated Sep 15, 2026 · Updated 1 time

Summary

Researchers test whether high-intensity laser therapy changes tendon thickness and blood vessel growth in healthy university students. Participants receive laser treatment at one of three power settings or a placebo, twice a week for four weeks. Ultrasound and Doppler imaging measure tendon structure and vascularization before and during the study. The goal is to see if different laser powers affect tendon tissue in healthy people.

What this could mean

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

Active substance
high-intensity laser therapy (HILT)
What this could lead to
If it works, this could show how laser power settings affect tendon structure and blood flow, which may inform future tendon treatments.
What could go wrong
This is a small study in healthy young adults, so results may not apply to older people or those with tendon injuries. Laser therapy can cause discomfort or skin reactions, and the study may find no meaningful changes.

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

52 people

The number who actually took part.

Started

Mar 2024

Expected to finish

Sep 2026

An estimate. End dates often move.

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

18 to 30 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: University students aged 18 to 30 years. Male or female participants. Body mass index (BMI) between 18.0 and 29.9 kg/m². Intact thermal sensitivity and ability to perceive and communicate pain. Willingness to participate in the study. Provision of written informed consent. Exclusion Criteria: Metabolic or cardiovascular diseases. Active infections. History of fractures affecting the study region. Tumors. Pregnancy. Use of medications that may affect blood circulation, pain perception, or mental status. Skin alterations in the treatment area, including ulcers, hematomas, or psoriasis. Previous surgery or scars in the patellar tendon region. Knee prosthesis or previous knee arthroplasty. Acute inflammation.

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As listed by the trial registrant

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

Healthy tendon

Contacts and locations

Locations

  • CSEU La Salle

    Madrid, Madrid, 28023, Spain