IRCT20150602022539N11 IRCT 2021-10-22 Semnan University of Medical Sciences Effect of whole body vibration training, on the lower limb muscles’ electromyography and timing of activation in patients with knee osteoarthritis during functional activity Effect of whole body vibration training, on the lower limb muscles’ electromyography and timing of activation in patients with knee osteoarthritis during functional activity 2021-11-01 anticipated 68 Complete https://irct.ir/trial/59150 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: In this study, Permuted block randomization will be used for randomization, which includes 4 blocks (2 participants in the intervention group and 2 participants in the control group). Random allocation software is also used for randomization tools. In order to create an allocation concealment, each random sequence created is recorded on a card and the cards are placed in sealed opaque envelopes, respectively. In order to maintain a random sequence, the envelopes are numbered in the same way on the outer surface. At the beginning of the registration of participants, according to the order of arrival, one of the envelopes is opened in order and the assigned group of that participant is identified, Blinding description: In this study, blindness will be done in the participants. Participants from both groups will be admitted at different times for evaluation and intervention and will not be aware of the type of intervention of the other group. N/A knee osteoarthritis. Intervention 1: Control group: routine physiotherapy including TENS, Continuous US, hot packs and strengthening exercises three days a week for 4 weeks. Intervention 2: Intervention group: routine physiotherapy including TENS, Continuous US, hot packs and strengthening exercises and WBVT exercises with 3 mm amplitude and 30 Hz frequency three days a week for 4 weeks. 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 Its release schedule is not yet known