🧑 Human 🎲 Randomized trial*, crossover 👥14 participants (Study 1) ⌛ 6 visits within 2 weeks incl. 3 treatment sessions (260J vs 130J vs placebo) 🧑 Human 🎲 Randomized trial*, crossover 👥 13 participants (Study 2) ⌛ 6 visits within 2 weeks incl. 3 treatment sessions (260J vs 130J vs placebo) · 2020 · Brazil (Bauru)
Acute Photobiomodulation by LED Does Not Alter Muscle Fatigue and Cycling Performance.
Dutra · Med Sci Sports Exerc · 2020
The protocol this study used
What the authors concluded
Based on our findings, the PBMT at 260 J and 130 J doses does not have a beneficial effect on muscle fatigue, cycling performance, metabolic parameters and muscle activity in male recreational cyclists." Comment: The wording for the randomization process was: "Two separate studies were performed, both in a pseudorandomized and balanced, crossover design.
Devices that emit this wavelength
Matched on wavelength within 15nm, since LED bins vary by roughly that much and a tighter match would be false precision. Where we have an irradiance figure, the session length is the time needed to reach this study's dose of 0.82 J/cm² at that intensity.
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Matching a wavelength is not the same as reproducing a trial. Session times assume the device's published irradiance is accurate at the distance it was measured, which on brand-claim figures is often optimistic. Where a device publishes both a peak and an average we use the average, and where it publishes a falloff curve we use the lowest figure, so these times run long rather than short. Clinical protocols also control for spot size, contact and skin type in ways a home device cannot.
Source
Dosimetry extracted by Vladimir Heiskanen in Photobiomodulation (PBM) research - a comprehensive database. Citation resolved against PubMed.