I'm new to TGN, definitely not young as my username suggests. I'm getting back into skating after 7 years off (after playing on/off for 5, preceded by a 10 year hiatus). I saw this thread and wanted to jump in.
I'm 43 with a herniated disc from years of olympic lifting & crossfit, after my college playing days were over. I recommend Yoga as a way to keep everything pretty aligned and muscles loose, but there's different types- Vinyasa flows from one movement to the next and is a bit more of a workout. I've done that and Hatha, and found Hatha better for what I wanted- it focuses more on alignment, stretching, and core strength which I felt was better as a therapeutic way to keep skating. I just got a little bored with it, and if anyone finds they're feeling similar, pilates is great alternative too. I started going to Lagree (it's like pilates on steroids) and it kicks your ass. I can go 2x, maybe 3x per week. It's a lot of very slow movement and isometric holds so you actually can build some leg strength along with building a rock solid core.
Just my $0.02 if anyone is interested in looking for weightlifting alternatives because of wear and tear