Syafei, Ahmad, james tangkudung, and junaidi. 2023. “Effect of Quadriceps Muscle Strength, Range of Knee Motion and Motivation on Static Body Balance in Patients Post Anterior Cruciate Ligament (acl) Reconstruction ”. Gladi : Jurnal Ilmu Keolahragaan 14 (01), 29 - 42. http://103.8.12.212:33180/unj/index.php/gjik/article/view/24602.