The Effect of Rehabilitation Using Different Levels of Resistance Bands and Variations in Contraction Type on Strengthening the Spiral Line Muscles and Reducing Non-Slipped Lower Back Pain in Men Aged 40–45 Years. cbej [Internet]. 2025 Oct. 4 [cited 2026 Jun. 4];31(132):784-97. Available from: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/13721