IRCT20220421054600N1 IRCT 2022-07-04 Ahvaz University of Medical Sciences Whole body electrical muscle stimulation in patellofemoral pain syndrome PFPS Evaluation of the effect of whole body electrical muscle stimulation and common strengthening exercises on pain and improvement of function in women with patellofemoral pain syndrome 2022-06-22 anticipated 60 Complete https://irct.ir/trial/63131 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Supportive, Randomization description: People with patellofemoral pain syndrome are randomly divided into two groups include: strengthening exercises and strengthening exercises with electrical stimulation of the whole body by tossing coins, Blinding description: Three specialist are involved in the study process. The first specialist is in charge of the evaluation, the second specialist is in charge of therapeutic interventions, and the third specialist is in charge of analyzing the results. In this study, the specialist who evaluations patient is blind. N/A Patellofemoral pain syndrome. Intervention 1: Intervention group: Exercise therapy with whole body electrical stimulation .The treatment protocol in this group includes the knee and hip muscles strengthening : quadriceps isometric contraction, abductor and external-internal rotator muscles, single leg raising in all plane, weigth training , elastic band training in all plane, lower extermity balance training( static and movable surface with tilt board) (three times per week) and whole body electrical stimulation (1.5 sessions per week : 1 session per week and in the next week 2 session per week ). This protocol is performed for seven weeks .frequency of current is 50 hz, puls duration 350 micoro sescend and treatment time-15 min. Intervention 2: Control group: In this group, common strengthening exercises of knee and hip muscles are performed for 7 weeks and with a frequency of three times a week. No - There is not a plan to make this available Justification or reason for not sharing IPD is the raw data of all participant will not be published.