Comparative study of two training methods in the preparation of Athletics pitchers force of Granma province, during the pre-competitive. Revista Universidad de Guayaquil, [S. l.], v. 109, n. 4, p. 51–58, 2010. DOI: 10.53591/rug.v109i4.368. Disponível em: https://revistas.ug.edu.ec/index.php/rug/article/view/452. Acesso em: 5 dec. 2025.