Effect of aquatic physical therapy on pain perception, functional capacity and quality of life in older people with knee osteoarthritis: study protocol for a randomized controlled trial.

Alcalde GE, Fonseca AC, Bôscoa TF, Gonçalves MR, Bernardo GC, Pianna B, Carnavale BF, Gimenes C, Barrile SR, Arca EA
Trials. 2017 Jul 11;18(1):317. doi: 10.1186/s13063-017-2061-x

https://www.ncbi.nlm.nih.gov/pubmed/28697785