The Effect of Progressive Muscle Relaxation on Low Back Pain And Anxiety in Primiparas. JURNAL KEPERAWATAN DAN FISIOTERAPI (JKF), [S. l.], v. 7, n. 2, p. 142–150, 2025. DOI: 10.35451/jkf.v7i2.2379. Disponível em: https://ejournal.medistra.ac.id/index.php/JKF/article/view/2379. Acesso em: 29 jun. 2025.