“The Effect of Sports Extracurricular Participation on Confidence and Social Interaction of High School Students”. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga 17, no. 1 (February 28, 2025): 476–483. Accessed December 8, 2025. http://competitor.ojsunm.ac.id/index.php/competitor/article/view/226.