Effect of low-level laser therapy on quadriceps and foot muscle fatigue in children with spastic diplegia: a randomized controlled study

What the authors concluded

This study was the first to show the effect of LLLT on power gains on quadriceps and dorsiflexors in children with CP diplegia." Comment: The 30 J dose per point does not seem likely as the power output is 0.2 W and the irradiation time is 30 seconds per point, thus the dose should be 6 J per point. Comment: Despite positive conclusions, the actual data doesn't seem to show as clear benefits be

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 164.85 J/cm² at that intensity.

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.