To investigate the effect of Perturbation-Based Balance Training on trunk proprioception and balance in hemiparetic cerebral palsy

Thirty-eight patients with hemiplegic cerebral palsy will participate in this study.

The patients will randomly be divided into two equal groups; the control group which received the selected physical therapy exercise program and the study group received the same exercise training program in addition to Perturbation-Based Balance Training, three times per week for three months. The evaluation methods are BIODEX, The Pediatric Balance Scale, baseline digital inclinometer.

Inclusion Criteria:

• - Thirty-eight children hemiplegic cerebral palsy
• Age will range as (8:10) years old
• Spastic hemiplegic cerebral palsy
• Normal body mass index ranged from 1SD to -2SDaccording to BMI-for age Z score charts include an age and sex- specific BMI for children (WHO, 2007).
• Gross motor function classification system: level I&II

Exclusion Criteria:

• • Difficulty to communicate or to understand program instructions

  • any other neurological deficits or orthopaedic abnormalities,
  • secondary musculoskeletal complication
  • vestibular problems
  • any mental impairment