@kfhoz

I apologize. When you mentioned "injury", I assumed it was a fracture. I also assumed since you were explaining how much you wrecked deadlifting, that you had spinal osteoporosis. I am glad you do not. Your spine T-score of -0.9 is really good, and being able to deadlift 100lb is amazing!

I am only saying that the LIFTMOR study does not apply to many older women (70+, and sadly some who are even younger) who have not been exercising for decades, or only lightly exercising. Sarcopenia (muscle atrophy) starts around age 30, and increases substantially at menopause, and then even more at 65+. Women lose 8-10% of their muscle mass per decade by age 65+. For most average women who are 75+, have never lifted weights, their 1-rep-max is not going to be high enough that lifting 85% will not put enough pressure on their bones to increase their bone density. Maybe after lifting steadily for 1 year with a PT they can build up enough strength so their 1-rep-max is high enough, but by then their bone quality has deteriorated even more. The results of the LIFTMOR study are not applicable to these people.. Plus people who are 70+ are out of the age range of the participants of the study.

I am not saying someone with osteoporosis should not lift weights. Getting stronger is very important as we age. But people with osteoporosis should not think that just lifting weights (and supplements) will cure them of osteoporosis, especially if their t-score is less than -3.0.