This reminds me of stuff I have been reading about pulsed electromagnetic fields. Known in the trade as PEMF, mostly used for inducing rapid bone repair in racehorses. No good theories about why it works, but it is widely used because it works. Another case of experiment leading theory.
Now I see PEMF being advertised by chiropracters, massage therapists, etc. These are not the most renowned of scientists, but they seem to be onto something which requires more investigation.
One paper I read described the biological effects of high electric fields applied for ultra-short time periods. With a rapidly rising EM pulse, polarization of the cell walls can occur, leading to increased porosity of the cell wall... allowing transfer of ions not typically allowed through the lipid wall. For example, transfer of medications from the bloodstream. Adjusing rise-time and voltage can tune the cellular porosity to particular ions.
This part sounds like science, to me. My doubt arises about the penetration depth of externally-applied PEMF fields. Can you really direct a high-energy pulse into deep tissue?