I just saw a great presentation that showed thru specialized radiology and biopsies that bone loss does occur concurrent with large muscle and tendon loss in sarcopenia, even early. The finding was also that resisting muscle+ tendon loss does not also prevent the associated bone loss. That is a separate effort.
I was reading about this in the medical literature because I've experienced frightening muscle loss over two weeks of respiratory illness. I'm now trying to rebuild. Not an easy task. I'm doing it the medically recommended way. I cannot afford to be at such risk as not having adequate muscle mass for functioning and fracture prevention.
Aahhhh....it's always something....