I absolutely agree with what others have said - lower poundage will help ensure a longer archery life for you, with today's bows you don't need a huge draw weight to get the velocity (and therefore KE suggested), and try to keep your shots as short as possible.

Both my shoulders have had surgery and are OK but not near as good as they once were. I use a 10 year old bow with 60 lb limbs for hunting (shooting at 58), and the arrows pass completely through the majority of the time; lots of KE.

The thing is, muscles can be built to withstand hard use and repair themselves if necessary, but once tendons are torn they stay forever damaged. Treat your shoulders well and they'll last much longer.

BTW, the vast majority of my shooting is done with my target bow at 48 lb.