Training in the pool is ultra low impact, perfect for the elderly, physical therapy for injury recovery and anyone else who might be unable to use actual weights or for whom weights are ill advised.
Ti Chi is similar but even then there is a risk of falling. If you fall in the pool it is a pretty soft landing.
I know a fitness instructor and physical therapist who specializes in pool work. Someone might be in a wheel chair and very limited but wheel them into the pool and watch them swim around, use paddles for resistance, etc. Put on swim fins and do some laps. Your legs will burn. It is very effective.
Lots of uses if you think about it. It isn't exclusively for fit people like in the picture.
-Tim-
Last edited by TimothyH; 03-12-18 at 04:06 PM.