Comparison between traditional strength training and complex contrast training on repeated sprint ability and muscle architecture in elite soccer players - Spineti, J.; Figueiredo, T.; Bastos De Oliveira, V.; Assis, M.; Fernandes De Oliveira, L.; Miranda, H.; Machado De Ribeiro Reis, V. M.; Simão, R. (The Journal of Sports Medicine and Physical Fitness, 2016)