Keshtiaray, Ali, Shahid, Mostafa Hossein . “Comparison of the effect of eight weeks of traditional resistance training and TRX on the pain intensity of soccer players with non-specific chronic low back pain.” Exercise Physiology and Performance, vol. 2, no. 2, 2024, pp. -.  https://doi.org/10.71951/epp.2025.1125827