The effect of physical skill exercise by Sycle style and by interval training on explosive power & on serve-smash skills . College of Basic Education Research Journal, [S. l.], v. 22, n. 2, p. 59–81, 2026. DOI: 10.33899/berj.2026.Vol22.Iss2.63552. Disponível em: https://berj.uomosul.edu.iq/index.php/berj/article/view/63552. Acesso em: 22 sep. 2026.