The Level of Flexibility of the Elderly in the Healthy Heart Gymnastics Community at the Sidoarjo Youth, Sports and Tourism Office. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga, [S. l.], v. 17, n. 2, p. 2073–2079, 2025. DOI: 10.26858/cjpko.v17i2.294. Disponível em: https://competitor.ojsunm.ac.id/index.php/competitor/article/view/294. Acesso em: 22 oct. 2025.