Gómez Muñoz, M.A., Chalapud-Nárvaez, L.M. and Lasso-Quilindo, C.A. (2025) “Effects of concurrent training on physical fitness parameters and specific performance in young swimmers competing in 50 and 100 meter freestyle events”, Retos, 71, pp. 302–315. doi:10.47197/retos.v71.111939.