Effects of exercise, physical activity, and sports on physical fitness in adults with Down syndrome: A systematic review. - Montalva-Valenzuela, Felipe; Castillo-Paredes, Antonio; Farias-Valenzuela, Claudio; Andrades-Ramirez, Oscar; Concha-Cisternas, Yeny; Guzmán-Muñoz, Eduardo (AIMS Public Health, 2024)