I also had what I believe was an impinged shoulder. Always on the right but on the left occaisionally also. Has been there for about 3 or 4 years. Just used ice packs for this.
Also, at my right elbow for nearly 2 years I've had golfers elbow, and on my left I've had tennis elbow for about a year. These weren't annoying, they were painful. Used wraps for these.
My auto factory job did not seem to affect these. I mean, it hurt sometimes when doing things but they werent regular enuff for what whould be considered chronic movement. Infact, over the last 6 months of work I was doing inspection and this was little to zero physical labour, outside of standing.
I just chalked it all up to getting old fast from my younger comp judo days coupled with my alcohol/tobacco lifestyle.
I've been out of factory work now for nearly 4 months(going to school) and alll my pain from before is GONE!! Gone!!!
I feel very, very young physically.