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Effects of portable Low-Level laser therapy on running kinematics in recreational runners with quadriceps fatigue

NCT ID NCT07808814

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

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Cancelled before anyone took part.

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First seen Sep 09, 2026 · Last updated Sep 09, 2026

Summary

This randomized, sham-controlled, two-period crossover study evaluated the effects of portable 808-nm low-level laser therapy (LLLT) on acute recovery and running biomechanics following a quadriceps-dominant fatiguing task in recreational runners. Twenty male recreational runners completed both active LLLT and sham conditions, separated by a 2-week washout period. After the fatiguing task, participants received 10 minutes of bilateral quadriceps LLLT or sham treatment, followed by treadmill running at the same fixed self-selected speed. Quadriceps soreness, heart rate, running spatiotemporal parameters, and kinematic responses were assessed using a verbal numerical rating scale, heart-rate monitoring, two-dimensional video analysis, and inertial measurement units.

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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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