IRCT20090831002391N39 IRCT 2018-02-07 Vice chancellor for research, Shiraz University of Medical Sciences Effects of whole body vibration on flexibility, vertical jump, agility and pain The effects of whole body vibration with exercise therapy vs exercise therapy alone on flexibility, vertical jump, agility and pain in athletes with patellofemoral pain syndrome 2018-02-03 anticipated 24 Complete https://irct.ir/trial/28325 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: Assignment of patients in two groups of test and control was done by Block Balanced Randomization (BBR) method. The Randomization Sequence is generated with using the free web site at http://www.randomization.com, Blinding description: The examiner will not be aware of which intervention will be administered to which subject. The patients aware of the existence of two different groups, but do not know about their groups (treatment or control). N/A Patellofemoral Pain Syndrome. Intervention 1: Intervention group: In the intervention group, exercise therapy with whole body vibration training with frequency of 50 Hz and amplitude of 4 mm and for 2 sets 60 seconds with 30 second rest between sets are performed for 4 weeks and three times a week. Intervention 2: Control group: In the control group, exercise therapy is performed for 4 weeks and three times per week. 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 The standard data will be prepared, but will be sent to the journal if needed.