Each WBV session consisted of the following schedule: (3 min of WBV) – (3 min rest) – (3 min of WBV) – (3 min rest) – (3 min of WBV). Thus, one treatment session corresponded to 9 min of exposure to WBV. The study physiotherapist documented the vibration settings used for each treatment session as well as other clinical observations made during the vibration sessions. The physiotherapist was instructed to terminate the session if the child complained of fatigue or pain. In order to get acquainted with WBV treatment and to evaluate the child’s capacity to be vertical on the plate, all patients performed the first treatment sessions using a vibration platform attached to the base of a tilt table. The identical set-up has previously been described as ‘Cologne Standing and Walking Trainer System Galileo’