While bone density/muscle loss is predicted from aging, I assume heavy lifting can reverse both of these. What I am curious about is joint and connective tissue changes related to aging.
I am currently 61 and have been lifting regularly for a little over a year with no prior background in resistance training. If I increase bar loads at the full pace my muscles can adapt to, I anecdotally find a couple of months later that I start experiencing joint pain that limits my training efforts at the lower rep ranges (3-6). As a compromise, I have been able to make consistent progress by shifting to higher average reps (8 @RPE 8) as the load increases are naturally slower at this range. I worry that this limits my progress since I am basically in a fixed program. After getting my nutrition in order, I have seen good hypertrophy results, so at least there is that.
Are there ways I can condition/manage my joint structures to handle the higher intensities used in a 12 week strength block? Do your older clients report similar issues?