IRCT20200628047946N1 IRCT 2020-07-16 Kharazmi University Comparison of the effect of Real-time Feedback and Electromyography Biofeedback compared with Exercise therapy on Fear of movement, Clinical prediction rules and Stair-descent Kinematics in Subjects with Patellofemoral Pain Syndrome PFPS Comparison of the effect of Real-time Feedback and Electromyography Biofeedback compared with Exercise therapy on Fear of movement, Clinical prediction rules and Stair-descent Kinematics in Subjects with Patellofemoral Pain Syndrome 2020-07-22 anticipated 93 Complete https://irct.ir/trial/49631 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Other design features: -, Randomization description: The samples will be randomly divided into three homogeneous groups including two intervention groups and a control group, Blinding description: Participants, Researchers, Outcome evaluators and data analyzer are kept blind. N/A patellofemoral pain syndrom. Intervention 1: Control group: 45 minutes of therapeutic exercises including strengthening the central muscles of the trunk and thigh and knee muscles in each session. Intervention 2: Intervention group: 45 minutes of therapeutic exercises including strengthening the central muscles of the trunk and thigh and knee muscles with Real-time feedback in each session. Intervention 3: Intervention group: 45 minutes of therapeutic exercises including strength training of the central muscles of the trunk and muscles of the thighs and knees with biofeedback electromyography in each session. Yes - There is a plan to make this available What will be shared: Only part of the data, such as dependent variables, the average of all samples, can be shared in scientific article. When: The date of access is November 2020. To whom: Personal information is confidential and general outcomes in paper form available to everyone. Conditions: Information is not available to anyone. Only the results are presented as a scientific article. Where to obtain: Seyedeh Saeedeh Mousavi Moghadam Qaleh Zoo- Phone 09010965165- Email smusavi73@gmail.com How to obtain: - Comments: -