BANGKO, Akram Muhibulloh; SUPRIADI, Amir; VALIANTO, Budi. THE CONTRIBUTION OF BAR TWIST EXERCISES ANDTRAINING ON SIGNAL ACOUSTIC UPPER SERVICE ABILITY IN SEPAK TAKRAW ATHLETES IN NORTH SUMATRA. Indonesia Sport Journal, [S. l.], v. 3, n. 2, p. 76–83, 2020. DOI: 10.24114/isj.v3i2.37826. Disponível em: https://jurnal.unimed.ac.id/2012/index.php/isj/article/view/37826. Acesso em: 9 jul. 2025.