What are your safety thoughts on Aqua cardio classes for seniors in a heated pool?
Up to 90 degrees should not be a problem for most and would be very good for arthritis clients. I taught 10 years in a therapy pool with those temps and never had a problem. Keeping an eye on the group for signs of heat stress and then adjusting as necessary works very well. Caution them not to go from the warm pool directly into a cold pool or shower. And you would progress them appropriately.