For me it is all about my main goal
not about what I could possibly look like! Some of my goal do not conflict with what I enjoy the most.
For example : I love plyo and I know it does not conflict with keeping and increasing bone density.
That being said, I am just someone who embrace it all. Endurance, hypertrophy and strength. keeping a good form of course.
Cathe has made me do barre which is part of endurance and physical therapy. Those came in handy when i had my shoulder injury. Now that i regained back my left shoulder mobility, I can enjoy what i love the most. 8 reps of STS 2.0 Triset total.
Those are INTENSE when it is properly done according to the purpose the workout was designed for.
ETA : Plyo does the job when it comes to preserving bone density/osteroposis. Here is an article.
Plyometric training - do you really need it? There are benefits to power training that go beyond improving your jump height.
cathe.com