Table 1

Parameters for PBMT/sMF and placebo

PBMT/sMFPlacebo
No of lasers4 Super-pulsed (infrared)4 Super-pulsed (infrared)
Wavelength (nm)905 (±1)905 (±1)
Frequency (Hz)2500
Peak power (W)—each12.50
Average mean optical output (mW)—each0.31250
Power density (mW/cm2)—each0.710
Energy density (J/cm2)—each0.1620
Dose (J)—each0.071250
Spot size of laser (cm2)—each0.440.44
No of red LEDs4 Red4 Red
Wavelength of red LEDs (nm)640 (±10)640 (±10)
Frequency (Hz)22
Average optical output (mW)—each151
Power density (mW/cm2)—each16.661.111
Energy density (J/cm2)—each3.800.253
Dose (J)—each3.420.228
Spot size of red LED (cm2)—each0.90.9
No of infrared LEDs4 Infrared4 Infrared
Wavelength of infrared LEDs (nm)875 (±10)875 (±10)
Frequency (Hz)160
Average optical output (mW)—each17.50
Power density (mW/cm2)—each19.440
Energy density (J/cm2)—each4.430
Dose (J)—each3.990
Spot size of LED (cm2)—each0.90.9
Magnetic field (mT)350
Irradiation time per site (s)228228
Total dose per site (J)300.912
Total dose applied in muscular group (J)1805.47
Aperture of device (cm2)2020
Application modeCluster probe held stationary in skin contact with a 90° angle and slight pressureCluster probe held stationary in skin contact with a 90° angle and slight pressure
  • LEDs, light-emitting diodes; PBMT, photobiomodulation therapy; sMF, static magnetic field.