i use a different style, for circulation improvement.
this does reduce the pain level also.
i use one that is shaped to allow you to place both feet onto the unit.
it also has the ability to attach wires.
these wires are used for pads, or gloves.
you can place the pads anywhere on your body.
i use the gloves mostly.
i use it in winter to increase my circulation.
by increasing my circulation, i decrease the pain in the effected area.
when i get too cold it hurts.........
increase the circulation....decrease the pain.