Battery powered PEMF Devices
Results of effective PEMFtherapy is very much dependent on the applied output intensity combined with the speed in which the pulsed electromagnetic energy enters the body. The electromagnetic energy will be able to penetrate deep inside the cells and bones only if each individual pulse of the pulsed PEMF signal has sufficient energy and is built up very fast (speed of induction).
If the electromagnetic intensity is either too low or does not have sufficient high penetration speed, the effiacy of the pulsed magnetic energy in the body will be close to zero.
This is mostly true for battery powered devices because to extend the battery life of the device the pulses are kept to a bare minimum. This usually results in very low efficacy for the PEMF device because insufficient energy 'inside' each of the individual pulses is transferred into the bones and cells.