TY - BOOK AU - Menan Aliy Eldeen Mohamed Elmahdy AU - Abdulsalam , Mohammed Shawki AU - Ayad , Khaled Elsayed AU - Abdelrahman , Amira Metwally TI - Correlation Between Contractile Properties Of Quadriceps Muscle and Functional Performance in Runners With Patellofemoral Pain Syndrome / U1 - PHD 5 PY - 2023/// CY - Cairo PB - Cairo University, Faculty of Physical Therapy KW - Running related musculoskeletal injures KW - Sports injuries KW - Patellofemoral Pain Syndrome KW - Tensiomayography KW - Functional Performance N1 - Thesis Submitted in Partial Fulfillment for the Requirement for the Doctoral Degree in Physical Therapy for Musculoskeletal Disorders N2 - Background : Long distance runners commonly complain from patellofemoral pain syndrome ( PFPS ) that limits their performance and return to sports. Abnormal neuromuscular control of the quadriceps has been suggested to contribute to abnormal patellar tracking and hence PFPS. Neuromuscular alterations are a major causal factor of primary and secondary injuries , and it is influenced by alteration in muscle morphology and neural activity , clinically ER -