PEMF Therapy time
As already elaborated on the "Frequency" page, a PEMF therapy session should be sufficiently long in order to lead to the beneficial effects.
PEMF therapy devices using only one specific pulsing frequency like 30 Hz for the complete therapy time necessarily cause these manufacturers to suggest therapy sessions once or twice a day for only 8 or 15 minutes. The reason for this 'advice' is that the body adapts to a specific pulsing frequency, making longer therapy times ineffective.
For example, when sitting in a plane we all experience the noise made by the motors of the plane. After a short while we hardly notice this noise anymore. This is due to the ability of our body to 'adapt' to the surrounding noise disturbances and thus 'cancel them out'.
The same holds true for PEMF's, pulsing the whole time with the same frequency and intensity, which is a form of noise for the body.
The body adapts to the used pulsed frequency and after a couple of minutes the therapy effect starts to decrease. By changing the pulsing frequency every couple of minutes, this adaptation effect is avoided and effective therapy is thus realized for the whole therapy session, independent of the total therapy time, provided that the frequency steps are sufficiently apart for each time step.
This is the reason why a PEMF device should have a series of different programs available. Each program consists of different series of pulsed frequencies and intensities, which should run automatically in sequence during the total therapy time.
Each program should be associated with its own therapy time sequence, assuring beneficial therapy efficacy for the chosen program. This results in effective PEMF therapy for the full time of the chosen program.