Analysis of Abdominal Strength on Heading Quality in Football Athletes of the Persela Lamongan Academy. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga, [S. l.], v. 17, n. 2, p. 1549–1555, 2025. DOI: 10.26858/cjpko.v17i2.141. Disponível em: https://competitor.idjournal.eu/index.php/competitor/article/view/141. Acesso em: 18 jul. 2025.