IRCT20180627040251N8 IRCT 2024-07-08 Kharazmi University Effect of balance training with and without stroboscopic vision on functional performance in athletes with chronic ankle instability Effect of balance training with and without stroboscopic vision on kinesiophobia, proprioception and timing of muscle activity of selected muscles in people with chronic ankle instability 2024-07-10 anticipated 45 Complete https://irct.ir/trial/77095 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: Randomization will be done using simple randomization individually and random sequence allocation through a computer program aided by a web-based program (randomizer.org). It will be determined by a non-involved research team member when selecting samples from opaque, sequentially numbered sealed envelopes for allocation concealment. Participants will be allocated to two intervention groups and one control group, Blinding description: In this study, the outcome assessor is blind to the groups’ randomization and interventions receiving by participants. in this way, during the evaluation before and after the intervention protocol, they do not make mistakes in their judgments in favor of a specific therapeutic intervention. N/A Condition 1: Sprain of Ankle. Condition 2: Balance Exercise. Intervention 1: Intervention group1 : Includes static and dynamic balance exercises for the injured ankle. The program consists of 6 exercises, which start from an easy level and gradually become more difficult according to the way of execution and the person's ability. It should be noted that the intensity, duration, type of movements and level of exercises in this protocol are controlled by the examiner and are changed according to the principle of overload. All participants do 18 training sessions for 6 weeks. Intervention 2: Intervention group 2: Includes balance exercises with stroboscopic vision. This exercise protocol includes static and dynamic balance for the injured ankle. The program consists of 6 exercises, which start from an easy level and gradually become more difficult according to the way of execution and the ability of the person. It should be noted that the intensity, duration, type of movements and level of exercises in this protocol are controlled by the examiner and are changed according to the principle of overload. The exercises are done in a circle for 20 minutes and all participants do 18 training sessions for 6 weeks. The participants perform the above-mentioned balance exercises by adding glasses in the form of alternating vision between opaque and transparent phases during the intervention. The glasses are on the eyes of the participants during the entire training, and the glasses are completely transparent during rest. Intervention 3: Control group: In the control group, there is no intervention and only pre-test and post-test are taken. They are asked not to exercise during this time. 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 It is not necessary to publish this information.