IRCT20140612018077N3 IRCT 2023-12-25 Iran University of Medical Sciences Investigating the clinical application of four balance measurement tools in people with Parkinson's disease Minimal Clinically Important Difference (MCID) for four balance measures in people with Parkinson's disease 2023-12-23 anticipated 100 Complete https://irct.ir/trial/74466 interventional Randomization: Not randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Other, Purpose: Treatment. 1 Parkinson's Disease. Intervention group: Balanced physical activity on different surfaces (hard and foam) in different vision states (eyes open and closed) will be performed as a single and dual cognitive or physical task. These tasks will be based on Gentile’s taxonomy, progressing from simple to complex according to each patient’s condition and level of progress. The amount of repetition and the duration of each physical activity will be based on the theory of learning. Specifically, when a patient can easily repeat a pose three times, the task will become more difficult. This progression will change from standing on two legs with eyes open in a short period of time without a cognitive or physical dual task, to standing on one leg on foam with eyes closed along with a cognitive or physical task.The balance activity will be designed based on four main parameters: repetition, time, type, and intensity. In terms of the repetition parameter (number of sessions per week), which suggests two to three sessions per week as suitable for balance activity, three sessions per week will be considered. In terms of the time parameter (the duration of physical activity in each session), between 45-60 minutes is deemed the most suitable time for balance activity. The type of physical activity (control of the body’s center of gravity from static to dynamic) will be selected based on Gentile’s theory, progressing from simple to complex as described above. No - There is not a plan to make this available Justification or reason for not sharing IPD is The participants of this study did not give written consent for their data to be shared publicly, so due to the sensitive nature of the research supporting data is not available.