“The Effect of Progressive Muscle Relaxation on Low Back Pain And Anxiety in Primiparas”. JURNAL KEPERAWATAN DAN FISIOTERAPI (JKF) 7, no. 2 (August 12, 2025): 142–150. Accessed January 13, 2026. https://ejournal.medistra.ac.id/index.php/JKF/article/view/2379.