The Effect of Physical Education Lessons on Reducing Learning Stress Levels in Class VIII Students of SMP Negeri 4 Kunto Darussalam. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga, [S. l.], v. 17, n. 3, p. 2267–2274, 2025. DOI: 10.26858/cjpko.v17i3.423. Disponível em: http://competitor.ojsunm.ac.id/index.php/competitor/article/view/423. Acesso em: 7 dec. 2025.