IRCT20181107041588N1 IRCT 2019-04-13 University of social welfare and rehabilitation sciences Balance in MS patients MS Comparing the effect of mental exercise and routine occupational therapy on balance and walking performance among patients suffering from multiple sclerosis (MS) 2018-12-22 anticipated 56 Complete https://irct.ir/trial/35940 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: Via simple randomization method using number box, the subjects will be individually assigned to two groups. Using random allocation rule (RAR), a bog box is provided for all samples, i. e., each subject is allocated a code number between one to last number, after final sample allocation. All codes are placed in a non-transparent envelope, and then, some numbers are transferred blindly from the first envelope to second, until half of the code numbers are been transferred. Then, each envelope will be allocated to experimental and control groups via dropping coin. Finally, the numbers in each envelope are matched to the name of the subjects and will refer to receiving relevant interventions, Blinding description: 1- The researcher encodes patients after compliance with the entry criteria (each patient receives a code) 2. the assessor is Blind to the subjects assignment to the intervention group. He/she Assesses patients, refer them to rehabilitation services. 3. The subject's blindness to the intervention group: The patient receives special care for the group by providing a card containing the code without informing or communicating with other patients. 4. Blindness of the occupational therapist to the subjects assignment to the intervention group. The therapist provides occupational therapy services according to the protocol to each patient-code. 5. Patients with code belonging to the experimental group will refer to the special training site and receive the relevant services. 6. Blindness of the information analyzer on the subjects’ assignment to the intervention group. Data will be evaluated and compared in three steps (before and after intervention and follow up). Then, two groups with different codes (blind to assigning code to the intervention group) are also compared. 2 patients whit MS. Intervention 1: Intervention group 1: 11 patients with MS are selected as the intervention group. These subjects will receive mental practice for 20 minutes, in addition to the common occupational therapy exercises. The intervention will be conducted for 3 sessions per week and for 6 weeks. Individuals are evaluated in three times (1) before interventions (2) after interventions (3) 2 weeks after the last session of the intervention. Intervention 2: Control group 1: 11 patients with MS will be assigned as control group 1 and will receive common occupational therapy exercises for 3 45-minute sessions per week for 6 weeks. The participants will be evaluated in three times (1) before intervention (2) after intervention (3) 2 weeks after the last session of the intervention. 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 have not yet made a decision on this issue and its publication plan is unclear. In consultation with the professors, it will be decided after this work.