Grijalva Rosero , J. M.; Herrera Simbaña , M. J.; López Fierro , H. P.; Ramon Calvache , N. F.; Ullaguari Flores , S. R.; Tamayo Benavides , A. R. Periodization in Extracurricular Sports Training: Improvement in Physical and Technical Performance. Mentor 2026, 5, 127-136.