The data is indisputable. Even with that your MO may not have recommended it because it is not SOC and the reason for that is insurance won't pay for it.
It is up to us to make the decision for ourselves.
I personally lucked out because of good friends who go to the gym three days a week and they pick me up to go with them. 15 months later I feel so much better, I stand up straighter, I feel prepared for my Total Knee Replacement in a couple of weeks, and people tell me how much better I look.
I go to Chuze fitness for $10.00 a month for Basic Membership. I do all of the major muscle group strength training machines, alternating uppers and lowers for 45 minutes 3 days a week. I started with light weight and 10 reps and slowly added weight and reps to 15 based on my ability not to hurt myself. I use an app called HeavySet to log me workouts.
At this point I go to they gym when my friends can't and I have recumbent bike at home for off days.