Inclusion Criteria:  Age ranged from 5 to 7 years Average height around one meter or more as it is the suitable height for formetric measures They were able to stand alone independently and have the ability to walk both forward and backward over ground without an assistive device. They were able to understand and follow verbal command. They were classified as I or II by gross motor function classification system (GMFCS). The degree of spasticity in the involved lower extremity according to Modified Ashworth Scale ranged between grades 1, 1+ and 2.  Exclusion Criteria:  Neurological or orthopedic surgery in the last 12 months, uncontrolled seizure disorder, visual, auditory or perceptual problems and who had any experience of backward training before the trial.