Differences in physical performance between U-20 and senior top-level Brazilian futsal players - Nakamura, Fábio Y; Pereira, Lucas A; Cal Abad, César C; Kobal, Ronaldo; Kitamura, Katia; Roschel, Hamilton; Rabelo, Felipe; Souza-Junior, Wilson A; Irineu Loturco (Journal of Sports Medicine and Physical Fitness, 2016)