🧑 Human 🎲 Randomized trial, crossover, double-blind 👥 15 participants ⌛ 2 sessions with 48h washout · 2023 · Brazil (Marechal Cândido Rondon)
Photobiomodulation does not improve anaerobic performance in well-trained cyclists
Flores · Lasers Med Sci · 2023
The protocol this study used
What the authors concluded
We conclude that irradiation with red light, under a low energy density, does not promote ergogenic effects on the anaerobic performance of cycling athletes." Comment: I wonder whether this acute effect intervention with short washout period is suitable for studying the potential benefits of PBM for exercise. Long-term studies may be needed as well.
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 4.6 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.