Study in Parkinson’s disease of exercise phase 3 (SPARX3): study protocol for a randomized controlled trial oleh Charity G. Patterson, Elizabeth Joslin, Alexandra B. Gil, Wendy Spigle, Todd Nemet, Lana Chahine, Cory L. Christiansen, Ed Melanson, Wendy M. Kohrt, Martina Mancini, Deborah Josbeno, Katherine Balfany, Garett Griffith, Mac Kenzie Dunlap, Guillaume Lamotte, Erin Suttman, Danielle Larson, Chantale Branson, Kathleen E. McKee, Li Goelz, Cynthia Poon, Barbara Tilley, Un Jung Kang, Malú Gámez Tansey, Nijee Luthra, Caroline M. Tanner, Jacob M. Haus, Giamila Fantuzzi, Nikolaus R. McFarland, Paulina Gonzalez-Latapi, Tatiana Foroud, Robert Motl, Michael A. Schwarzschild, Tanya Simuni, Kenneth Marek, Anna Naito, Codrin Lungu, Daniel M. Corcos, The SPARX3-PSG Investigators