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The article presents differences between the effects of low level and high power laser therapy.

 

Table of different therapeutic effects caused by biostimulation and high power laser therapy.

Low Level Laser Therapy High Power Laser Therapy
  • improvement of microcirculation,
  • stimulation of angiogenesis,
  • increase in the nerve fiber action potential amplitude,
  • increase in enzyme activity,
  • membrane potential changes,
  • changes in the secretion of neurotransmitters, hormones and kinin.
  • acceleration of electrolyte exchange between cell and environment,
  • increase in biological activity,
  • anti-mutagen impact,
  • changes in liquid crystal structure of biological membranes,
  • increase in synthesis of collagen, proteins, RNA and ATP,
  • no thermal effect
  • acceleration of micro-circulation,
  • increase in circulation of oxygen,
  • improvement of glucose metabolism,
  • stimulation of DNA synthesis,
  • increase in intracellular enzyme activity,
  • increase in fibroblasts activity,
  • increase in permeability across the cell membrane
  • activation of phagocytosis,
  • activation of Wall and Melzack’s control gate mechanism – analgesic effect,
  • activation of Na/K pump on the cell membrane,
  • activation of cell metabolic processes.
  • occurrence of thermal effect

 

 

Thanks to the wide spectrum of possible therapeutic results, the high power and biostimulating laser therapy can be used to treat disorders in plenty of the medical areas, including:

  • sports medicine,
  • orthopedics,
  • rheumatology,
  • neurology,
  • dermatology,
  • ENT,
  • dentistry.

Comparison of parameters between devices dedicated for low level and high power laser therapy on the basis of PhysioGo.Lite Laser and Polaris HPS units:

Parameter: Low Level Laser Therapy: High Power Laser Therapy:
Wavelength: R: 650 nm, 660 nm,IR: 808 nm  808 nm and 980 nm
Emission modes: continuous, pulse continuous, pulse
Pulse mode shape: rectangular rectangular, triangular (superpulse)
Pulse duty factor:  25%, 50%, 75%  1 – 90 %,
Pulse time duration:  50 us  50 us
Pulse mode frequency:  1 – 5 000 Hz  1 – 10 000 Hz
Peak output power: depending on the probe selected

max 400 mW

 up to 18 W
Average output power: depending on the probe selected

up to  400 mW

 up to 10 W
Treatment timer:  100 min  do 100 min
Power supply:  100-24 V, 50/60 Hz  230 V, 50 – 60 Hz, 130 W 150 VA
Dimensions: 30 x 23 x 11 cm  36,1 x 30,4 x 15,1 cm
Weight:  3 kg  6 kg

 

Conclusions:

  • High power laser can significantly accelerate the regeneration processes, and therefore the treatment time is shorter.
  • High power laser penetrates much deeper into the tissues thanks to an additional modification of the impulse mode (superpulse).
  • High power laser uses two wavelengths during the treatment, which allows to obtain deep tissue biostimulation effects as well as to achieve thermal effect.

 

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