Experimental: Dual Task Balance exercise group Clinical experimental: For group -A dual task balance exercise at least lasted 30-45 min on average . 15 minutes for dual task exercise and 30 min for routine physical therapy.Patients will receive total of 16 sessions, 2 sessions per week for 8 weeks.

Active Comparator: VS Group Clinical experimental: For group B VS lasted at least 30-45 min on average . 15 minutes for VS and 30 min for routine physical therapy.Patients will receive total of 16 sessions, 2 sessions per week for 8 weeks.

The content of the DT training is summarized below with 30 minutes of routine PT. Participants will receive total of 16 sessions, 2 sessions per week for 8 weeks.

1. Walking 3 m on hard/soft ground while performing a motor task (carrying an empty box) and then combined with a cognitive task (saying the names of some fruits and vegetables),
2. Sitting on a Pilates ball for 1 min with eyes open/closed while performing a motor task (arms flexed to 90 degrees) and then combined with a cognitive task (saying the names of friends)

3)2-feet Jumping forward with both feet for 3 m while performing a motor task (carrying an empty box) then with a cognitive task (naming the colors in the room)

4)Standing on one leg for 30 s while arms abducted to 90 degrees and then combined with a cognitive task (saying the names of relatives)

5)Sit-to-stand using a stool 15 repetitions with a motor task (carrying an empty box) and then with a cognitive task (saying the names vegetables etc)

The Pediatric Balance Scale (PBS), a modified version of Berg's Balance Scale, was designed to assess balance in school-aged children with mild to severe motor deficits. The scale consists of 14 items that are scored from 0 points (lowest function) to 4 points (highest function) with a maximum score of 56 points. Reliability testing performed with a sample of 20 children ages 5-15 years old with mild to moderate motor impairments showed good test-retest reliability (ICC=0.998) and good inter rater reliability (ICC=0.997)

The 'timed up and go' test (TUG) is a simple, quick and widely used clinical performance based measure of lower extremity function, mobility and fall risk.

1. Begin by having the patient sit back in a standard arm chair and identify a line 3 meters, or 10 feet away, on the floor.
2. On the word "Go," begin timing.
3. Stop timing after patient sits back down.
4. Record the time. The TUG has demonstrated good test-retest reliability (ICC 0.80-0.99), validity, and sensitivity to change. It has a moderate correlation with fall risk

The Körperkoordinationstest für Kinder (KTK), also known as the Body Coordination Test for Children to measure gross motor coordination in children aged 5 to 15 years. The KTK consists of four subtests: walking backward on balance beams of varying widths, jumping sideways with both feet together, moving sideways on boxes, and hopping for height on one leg which takes 15 minutes per child. The results from the four tasks are used to calculate a Motor Quotient (MQ). A score below an MQ of 85 is typically considered indicative of motor difficulties. KTK showed acceptable construct validity, indeed, the test-retest for the raw score on the test protocol detected a reliability coefficient of 0.97, and for each item, reliability coefficients ranged from (0.80 to 0.96).