Development of a Heading Technique Training Model in Futsal Games for PJKR Students of the 2024 Class of Tadulako University, Palu. Compet. J. Pendidik. Kepelatihan Olahraga. 2026;18(1):0979-0986. Accessed February 22, 2026. https://competitor.idjournal.eu/index.php/competitor/article/view/587