My back has some lower disk compressions that are causing me major pain and slowing me down big time. I have been on steroids and next phase is a chiropractor and PT. Chiropractor has always helped a lot in the past as well as massage but insurance not friendly towards massage. So I'm thinking ownership of an inversion table or chair may help me a lot. Will insurance cover the purchase of inversion table or chair and what is the learning curve using these devices?