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🧑 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

Wavelength
630, 850 nm
Dose
0.82 J/cm²
Sessions
1
Per session
40 sec

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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MitoPRO 1500+
630 · 660 · 830 · 850 nm
Measured
$1,169
≈ 11 sec / session
at 76.5 mW/cm²
MitoPRO 1500X
590 · 630 · 660 · 810 · 830 · 850 nm
Measured
$1,299
≈ 15 sec / session
at 53.5 mW/cm²
PlatinumLED BIOMAX 900
480 · 630 · 660 · 810 · 830 · 850 · 1060 nm
Measured
$1,299
≈ 9 sec / session
at 90.3 mW/cm²
HoogaHealth PRO1500
660 · 850 nm
Measured
$1,199
≈ 10 sec / session
at 86 mW/cm²
Joovv Solo 3.0
660 · 850 nm
Measured
$1,499
≈ 14 sec / session
at 59.2 mW/cm²
LUMEBOX 2.0
660 · 850 nm
Measured
$629
≈ 7 sec / session
at 125 mW/cm²

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

PubMed 33844675 →

Dosimetry extracted by Vladimir Heiskanen in Photobiomodulation (PBM) research - a comprehensive database. Citation resolved against PubMed.