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Want To Use Red Light Therapy - First Learn How To Calculate Light Dosage
The proper dosage is critical to achieving the benefits of red light therapy.
Calculating Red Light Therapy (RLT) dosage is critical. Too little light and it insufficient to generate a beneficial physiological effect. However, because RLT is biphasic, means that too much light is not beneficial either. What happens with an ever-increasing light dosage is that the beneficial physiological effects peak, then degrade, see chart below. You need to keep the dosage around the sweet spot.
The sweet spot is usually between 10–20 joules per square centimeter (10J/cm² — 20J/cm²), although this “sweet spot” can vary depending upon the body part and the treatment.
If you read a clinical study on RLT, it will describe the dosage in Joules per square centimeter. To use the information in the study we first need to know what is a joule?
What’s a Joule?
Joules are the standard of measurement for Red Light Therapy (Photobiomodulation).
One joule is equal to one watt/second. If you shine one watt of light on a surface for one second of time, you illuminated the surface with one joule of power.
