Influence of different small-sided game formats on physical and physiological demands and physical performance in young soccer players - Castillo, D.; Rodríguez-Fernández, A.; Nakamura, F. Y.; Sanchez-Sanchez, J.; Ramirez-Campillo, R.; Yanci, J.; Zubillaga, A.; Raya-González, J. (The Journal of Strength and Conditioning Research, 2021)