Hi--I researched carefully, using Harvard, Mayo, Cleveland Clinic, and sources like OSTEOstrong and other commercial gyms. I found that the trainers at OSTEOstrong were using the same information I was. But I researched at least a year ago, so feel free to do new work.
I decided to do my own OSTEOstrong routine at home, using a bull bar for upper body, exercycle lifting for core, yoga block for adduction, lying on my back and lifting our piano with my legs, and then standing 10 minutes on my own WBV machine. You can laugh! At OSTEO, you get the exact number of pounds you're lifting or pressing. And I can't know that. But if I'm pushing as hard as I can at home just as I'd be pushing as hard as I can on the OSTEO machine that measures, I'm getting the best workout I can. I am getting stronger--but I am doing PT, running, yoga to build bones, plus ballet barre routine. Obviously, TIME is a factor if you're exercising this much. So that's one reason I created my own OSTEO routine for home.
You're right: we don't need to be heroic; who can lift 600 pounds? Progress is a good goal.