EFFECTS OF HIP ABDUCTOR MUSCLES EXERCISES ON PAIN AND FUNCTION IN PATIENTS WITH PATELLOFEMORAL PAIN: A SYSTEMATIC REVIEW AND META-ANALYSIS. - ROGAN, SLAVKO; HAEHNI, MICHAELA; LUIJCKX, EEFJE; DEALER, JONAS; REUTELER, STEFAN; TAEYMANS, JAN (Journal of Strength & Conditioning Research, 2019)