I can tell you also that my Mom, who had severe RA among other problems, had extensive aquatherapy after a stroke and got back most of the use of her left side. She said she felt "free" in the pool. I'm pretty sure giddy was a good description - she could move easily - the water supported her weight. At first we had to wheel her into the pool with a special chair - by 3 months she was getting in and holding the handrail and my hand. We continued our outings twice a week until winter made it unpleasant to go out. I have always wondered how much more she might have progressed if the place she lived had a therapy pool.
Sue