The effect of progressive plyometric training on sprint performance and flexibility in college baseball athletes. - Rihatno, Taufik; Nuraini, Sri; Samsudin; Sujarwo; Subandi, Oman Unju; Ginajar, Shela; Resmana, Dadan; Ramadhan, Kevin (Retos: Nuevas Perspectivas de Educación Física, Deporte y Recreación, 2026)