The patient was positioned on the tilt table with the feet touching the vibration plate. The patients wore shoes during the WBV sessions to have a more stable position on the vibration plate. The patient was initially attached to the tilt table with two straps, one at the level of the pelvis and the other on the level of the knees. The initial tilt angle was set to 35 degrees. The goal for the subsequent sessions was to increase the angle of the tilt table and to eventually perform the WBV without a tilt table, using a WBV device placed on the ground. The speed of the progress toward this goal depended on the child’s ability to maintain an upright posture under the conditions of WBV. The first treatment sessions were performed using a vibration frequency of 12 Hz, with the middle toe of each foot placed 5.5 cm from the neutral axis of the vibration plate (indicated as position ‘1’ on the WBV device). The peak acceleration exerted by vibration increases with the frequency and the amplitude of the vibration. Therefore, higher frequency and higher amplitude are likely to elicit higher musculoskeletal force in the user of the WBV device. The goal was to increase the vibration frequency to 18 Hz and the peak-to-peak displacement to 4 mm (as determined for the middle toe of each foot). These target settings correspond to a peak acceleration of approximately 2.6 g and were based on our previous experience from a small observational study which indicated that these settings are usually well tolerated by children with CP