I did not do a bone density screening until close to age 60. Turned out that my legs and hips were in great shape. The ski conditioning I started doing after knee rehab at age 57 probably was helpful. However, my T-score for my spine was classified as osteopenia. After a little research, I learned that it's possible not only decrease bone loss, it's even possible to improve bone density with appropriate exercise. There are several relevant studies that include women over 70.
Found a video made by two physical therapists that is a good introduction to why bone loss in the spine can cause problems. It's done in serious but light-hearted way. Their focus is on people who probably are not out hiking, skiing, or even walking very much. They mention four elements that should be addressed by specific exercises:
- weight bearing
- resistance
- posture
- balance
Working with heavy kettle bells is a straightforward way to to improve bone density. Must be using enough weight. 8-10 pounds is not nearly enough.
The 66yo woman in this video is using 26 pounds. Of course, her trainer had her work up to that weight. Good form is especially important for anyone with osteoporosis in the spine already.
I found working with my trainer that 20 pounds was okay for the kettle bell swing and chest-hold squat when she started adding bone building exercises to my sessions. The ideal is to do the exercises 3 times a week, possibly alternating between heavier and slightly lighter weights.
Here are a couple other examples of exercises with weights. The first is a lunge and press, the second is a single leg deadlift with weights. I started with 12 pound dumbbells. Fewer reps with more weight at slow speed is better.