IRCT20181021041400N2 IRCT 2023-02-20 Iran University of Medical Sciences Comparison of the effects of two types of vibrating and non-vibrating ankle orthoses on balance, proprioception, and reaction time of ankle muscles in people with chronic ankle instability Comparison of the effect of vibratory and non-vibratory orthosis on sensorimotor function in people with chronic ankle instability 2023-05-12 anticipated 57 Complete https://irct.ir/trial/67870 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: Randomization will be done in blocks with 2, 4, and 6 blocks. Also, random concealment is done by using sealed opaque envelopes with a random sequence. the first randomization is created and based on the opaque envelope sample size. Random number cards are placed inside the envelope. Then the participants choose the envelopes. N/A Chronic ankle instability. Intervention 1: Intervention group: Ankle orthosis with Vibration. This type of orthosis consists of a supporting part and a vibrating part. Its supporting part is made of neoprene and thermoplastic and covers up to 10 centimeters above the wrist. The vibration section also consists of vibration motors. This vibration will be applied to the outer part of the ankle. The vibration frequency will be 100 Hz. Each participant will wear the orthosis for 6 hours per day for 4 weeks, but will only receive vibration for 30 minutes while walking. Intervention 2: Control group: Ankle orthosis without Vibration.This type of orthosis is made of only one supporting part. The supporting part is made of neoprene and thermoplastic and covers up to 10 centimeters above the wrist. Each participant will wear this orthosis for 6 hours every day 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 There is no further information