Physical and physiological differences of backs and forwards from the Brazilian National rugby union team - Nakamura, F. Y.; Pereira, L. A.; Moraes, J. E.; Kobal, R.; Kitamura, K.; Cal Abad, C. C.; Teixeira Vaz, L. M.; Loturco, I. (The Journal of Sports Medicine and Physical Fitness, 2017)