Methods and Procedures: 24 children with spastic cerebral palsy from both sexes, There ages from 6 to 8 years old. Children were randomly assigned into two groups (study group and control group). Each child was evaluated before and after 6 successive weeks. The children of the control group received traditional chest physiotherapy. while, the children of the study group received 4 sessions per week for 6 weeks with quake device.
Aim: To investigate the effect of intrathoracic oscillations on forced expiratory volume at first second and peak expiratory flow in the children with cerebral palsy.~Methods and Procedures: Children were randomly assigned into two groups (study group and control group). Each child was evaluated before and after 6 successive weeks.