Posted: 10/03/2014 at 16:58
I used a TENs machine during labour (a specific maternity one) and actually found it helped. Not to the point of getting rid of the pain, but it did lessen it.
My chiropractor also used one to loosen off my glutes/piriformis before attacking me with an elbow, and again, it made the pain more bearable.
Not sure about this whole "speeding up recovery" thing though. The body is a wonderful feat of engineering and had come up with some pretty good ways of doing things in the best way for itself. Letting nature take its course and listening to my body tell me when its ready to train again is my preferred route.