IRCT20131225015932N16 IRCT 2020-04-21 Shiraz University of Medical Sciences Comparison the effect of trunk training with hip and knee strength training on pain ,function and proprioception in patients with patellofemoral pain Comparison of unstable seated core postural control training with hip and knee strength training on pain, function and proprioception in patients with patellofemoral pain 2020-11-21 anticipated 57 Complete https://irct.ir/trial/46098 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: Samples via Block randomizer application and Block size=3 will be placed in one of the three control groups, the hip and knee strengthening exercises group, or the postural control training group, Blinding description: The physiotherapist who will measure the outcome measures will be blinded to the patient’s allocation group. N/A Patellofemoral pain. Intervention 1: First intervention group, hip and knee strengthening group: participants will do 3 treatment sessions per week for a period of 1 month stretching exercises for quadriceps, hamstring, illiotibial band and calf muscles (3 repetition, 30 second hold) and quadriceps setting, terminal knee extention, straight leg raise and hip abductor and external rotator strengthening exercise.Each session almost will take time 47 minutes. Intervention 2: Second intervention group; postural control training exercise group: this group participants will do stretching exercises same as hip and knee strengthening group then patients will be received postural control training exercise using unstable sitting 3 treatment sessions per week for a period of 1 month.Patients will be asked to control their balance on unstable sitting and hold it as long as possible. In order to progress the training, 3 unstable sitting with 3 different diameters (24, 30 and 50 cm) will be provided. Each session will take time 47 min, and 7 sets of 5 min each with a 2-min rest interval between sets will used. Intervention 3: Control group: This group will be received no intervention. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is I haven't decided yet