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Can a pocket laser help tired legs run steadier?

NCT ID NCT07808814

Symptom relief Sponsor: Chia Nan University of Pharmacy ＆ Science Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

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
Running, but no longer taking on new participants.
Completed This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 09, 2026 · Last updated Sep 10, 2026 · Updated 1 time

Summary

Researchers test whether a portable low-level laser device applied to the thigh muscles helps recreational runners recover after a quadriceps-fatiguing task. Twenty male runners receive active laser therapy or a sham treatment in a crossover design, then run on a treadmill at a fixed speed. The team measures quadriceps soreness, heart rate, and running motion using video and wearable sensors.

What this could mean

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

Active substance
portable 808-nm low-level laser therapy
What this could lead to
If it works, runners could use a portable laser device after hard workouts to ease quadriceps soreness and steady their stride.
What could go wrong
The study is small, with 20 male recreational runners, and a single 10-minute session may not change soreness or running motion. Results in this group may not apply to women, other running styles, or longer recovery periods.

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

20 people

The number who actually took part.

Started

Feb 2025

Finished

Jun 2025

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 40 years

Sex

Male participants only

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: 1. Male recreational runners aged 18-40 years. 2. Recreational running status determined using the World Masters Athletics (WMA) age-graded performance score, with an age-graded score below 60%. 3. Previous experience with treadmill running. 4. Rearfoot-strike running pattern. 5. No running-related lower-limb injury during the preceding 6 months Exclusion Criteria: 1. WMA age-graded performance score of 60% or higher. 2. Non-rearfoot-strike running pattern. 3. Leg-length discrepancy greater than 3 cm. 4. Use of an orthosis, brace, or other lower-limb medical device that could influence running gait.

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As listed by the trial registrant

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

Muscle fatigue caused by repetitive muscle exercise

Contacts and locations

Locations

  • Chia Nan University of Pharmacy & Science

    Tainan, 717301, Taiwan

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