who reported that stimulation of otolith organs by transient linear acceleration and/or by changes in head position with respect to gravity evoke phasic and tonic vestibule-ocular and vestibule-spinal reflexes, which act on the head and limbs to maintain posture. He added that orientation in space depends to a height extent on input from vestibular receptors, visual cues, impulses from proprioceptors in joint capsules and from cutaneous extra receptors especially those of touch and pressure. These four inputs are integrated at various levels of the nervous system to maintain posture. In conclusion, both whole body vibration and suspension therapy via using spider cage are effective in the treatment for hemiparetic cerebral palsied children with high recommendation for using suspension therapy.