Annie Hillman is a community sport and health manager for the eight Better Leisure Centres across Cardiff.
The centres have co-delivered sessions with the NHS for several years, where patients with hip, knee and back pain can self-refer, or be referred by hospital physiotherapy teams.
NHS staff then deliver classes at the leisure centre instead of the hospital setting.
The centre's own staff have also been trained to take sessions or assess patients referred by their GP.
"At the end of the six week programme where they would have left the hospital setting they're already in the leisure centre, they've already broken down that barrier of coming through the door," she said.
"They see people like themselves exercising, and that is the change of behaviour that they continue to have. It's prevention - they don't want to go back to the doctors, they don't want to go back to the NHS, they keep active.
"There's a huge demand but the lack of funding for us is a problem."
It is a resource she wishes she had when a spinal injury caused her to have surgery in 2009.
"I had to learn to walk again," said the 53-year-old former Wales netball player.
"I came out of hospital and was in a bit of a dark place. There was nothing like this going on where I could meet people who had gone through the same thing."