THE EFFECT OF COMBINED ULTRASOUND AND MC KENZIE ON IMPROVING FUNCTIONAL ABILITY IN PATIENTS WITH MYOGENIC LOW BACK PAIN. STAND : Journal Sports Teaching and Development, [S. l.], v. 4, n. 1, p. 68–72, 2023. DOI: 10.36456/j-stand.v4i1.7785. Disponível em: https://jurnal.unipasby.ac.id/stand/article/view/7785. Acesso em: 4 jun. 2026.