“The Effect of Resistance Band Training On The Leg Speed of Badminton Athletes of PB. New Executive”. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga 17, no. 2 (June 25, 2025): 1291–1300. Accessed December 7, 2025. http://competitor.ojsunm.ac.id/index.php/competitor/article/view/108.