Thanks to you all for the comments. This is the first time I've been able to connect with folks my age and older who are experiencing this aspect of continued fitness at advanced age. I see that I am lucky not to have real medical limitations to my fitness. Which is not to say I haven't gotten hurt. One of the first things I learned was to take breaks between workouts. I had this brilliant idea one day that I should run or work out every day because that is what I did with good success when I was a kid. And then I strained my glutes and realized I had to stop running. It took almost three months to get back to running and some really good physical therapy. And I learned that I can't train like that at my age. I now limit training to 3 sessions a week of either running or training. I do have a great young trainer who seems to know the body quite well. He keeps me from hurting myself when I actually listen to him. For instance I have become very cautious about raising heavy weights overhead for the effect that might have on my shoulders. And that kind of thing is really what leads me to address this forum.
I don't think I'm the right one to be coming up with the best training scenario for my age. Once I tried silver sneakers but it's a very laid back program and I just don't think it addresses my desire to maximize my fitness. We focus on good things such as balance, flexibility, endurance, and strength. All these things have improved tremendously since I began this effort some years ago, but I know I am in uncharted territory and it is bound to become more difficult as I age further.
I don't know what the answer is. Doctors seem to focus on injuries and getting well, but I'm looking for methods to keep from getting injured while continuing to improve my physical condition. I've been relatively successful to date albeit with occasional injuries that could have been avoided had I been aware. That discrepancy is bound to increase as I age further. I can see that from you older gentlemen and women who relate your stories.
I live in a small town so I'm lucky to have this excellent trainer and physical therapist. I'm in better shape than most people here but that is not a bragging point. I'd travel 70 miles to Minneapolis/St Paul if I could meet others working through the same problems and solutions. I'd love to have a doctor who actually focused on increasing elderly physical condition rather than just working to keep us healthy. Just look at the internet. They talk about elder fitness and workouts, but I think they mostly try to fit everybody into some kind of body builder and that is absolutely not the goal.