Yang, Jin-Hyeok, and Su-Young Lee. “Comparison of EMG Activation of Quadriceps Femoris on Different Static Squat Exercises in Young Men With Patellofemoral Syndrome”. International Journal of Psychosocial Rehabilitation 24, no. 7 (September 30, 2020): 2134–2141. Accessed March 3, 2026. https://psychosocial.com/index.php/ijpr/article/view/9748.