Research has shown that not only does HIT strength training improve bone density, but it reduces the likelihood of falls and fractures (Journal of Bone and Mineral Research).
The Study Conclusion:
"The LIFTMOR trial is the first to show that a brief, supervised, twice-weekly high intensity resistance training exercise intervention was efficacious and superior to previous programs for enhancing bone at clinically relevant sites, as well as stature and functional performance of relevance to falls in postmenopausal women with low to very low bone mass. Further, that no fractures or other serious injuries were sustained by any participant in our study suggests that high intensity resistance training does not pose a significant risk for postmenopausal women with low bone mass when closely supervised, despite a common misconception to the contrary. In light of the very positive bone, function, safety, and feasibility outcomes of the LIFTMOR trial, we believe high intensity resistance training to be a highly appealing therapeutic option for the management of osteoporosis in postmenopausal women with low to very low bone mass."