Hong, SoungKyun, and GyuChang Lee. “Effects of a Low Back Exercise Program on Low Back Pain patients’ Lumbar Lordotic Angle, Abdominal Muscle Power, and Pain”. Journal of Human Sport and Exercise 16, no. 2 (April 1, 2021): 456–462. Accessed April 19, 2024. https://www.jhse.ua.es/article/view/2021-v16-n2-exercise-program-low-back-pain-patients-lumbar-lordo.