I guess it depends upon how you define “vigorous”...I consider my Pilates floor class vigorous...but many would not, but I have the body shape and blood work to prove it works. (Oh and some walking.) I used to run some, but now it just causes hip problems. I hate swimming...and biking...and avoid the elliptical, too. But, I could probably put myself up against my 30 year old grand daughter in a foot race and maybe win. (And MANY other women of all ages.)
I’m convinced nobody over 50 should run. The impact destroys joints eventually.
Walk, bike, swim and do machines for cardio.
Pilates is good low intensity resistance training.
Weights are better. For women too.