ESPINOSA, Daniela. Fartlek training: a method for the development of aerobic endurance in athletes. Systematic review. MENTOR revista de investigación educativa y deportiva , [S. l.], v. 4, n. 10, p. 673–697, 2025. DOI: 10.56200/mried.v4i10.9113. Disponível em: https://revistamentor.ec/index.php/mentor/article/view/9113. Acesso em: 22 apr. 2026.