Designing Android Based Physical Activities and “Lafit” to Increase Physical Fitness Level of Elderly. Journal Coaching Education Sports, [S. l.], v. 3, n. 1, p. 113–124, 2024. DOI: 10.31599/7tap4q75. Disponível em: https://ejurnal.ubharajaya.ac.id/index.php/JCESPORTS/article/view/1805.. Acesso em: 3 sep. 2024.