Exactly in front of me is today's takeaway happy fun meal (brought to you today by the syllables that complete the words "physical therapists") is how conscious awareness of our own muscle groups can alleviate shoulder pain. YMMV, I am not a doctor and I don't play one on TV or teh Interwebs, if symptoms persist for more than five hours ....
In the course of treatment for tendonitis of the left shoulder from calcium deposits and some minor arthritis, it appears to me useful to precisely inform the physical therapists of how I use my left arm with my bass.
"When I tell my doctor I am a bass player twice that I play bass, it is not to inform him of what a terrific human being I am," I say to the physical therapist who has worked with my recovery since April. "To some people," I opine, "the musician is the hired help."
"When I play I have this range of motion," (demonstrate), "and reach here to tune, and do this" (demonstrate) when I put it on and take it off."
A very simple matter and now she sees whet I am talking about. The exercises she shows me are now refined with all this in mind. More importantly, she makes certain I can feel the muscle groups so that I can hold that awareness day-to-day. And off I go.
Personally, having dealt with this shoulder for a while (it is my shoulder, after all, or so it appears to me) is a three inch wide fabric strap is most comfortable.
We now return you to your regularly scheduled realities. Ciao tutti