Fractionated irradiation in photobiomodulation therapy of ankle sprain.

What the authors concluded

Reflectance data analysis showed significant changes in group 1 (p = 0.027). There was also an ankle function score improvement more in group 1 than in group 2, with a significant short-term effect (p = 0.011) but without significant long-term effects (p = 0.178). Compared with group 2, group 1 had an immediate effect on pain reduction, but no long-term effect (p = 0.074)." "Combined with standa

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 4.5 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.