Effects of whole-body vibration exercise on sleep disorders, body composition and clinical parameters in down syndrome children: A study protocol for a randomized cross-over trial.

Down-syndrome the most common genetic disorder worldwide. Whole-body-vibration-exercise (WBVE) has been recommended for individuals with Down-syndrome. To verify the efficacy of WBVE on sleep disorders, body-composition (BC) and clinical parameters of children with Down-syndrome. It is a randomized cross-over-trial. Children with Down-syndrome, 5-12 years, both-genders will be selected. The sleep disorders will be evaluated by the "Infant sleep questionnaire Reimão and Lefevre" and by the "Sleep disturbance scale in children". The BC will be measure by bioimpedance and the skin temperature using infrared-thermography. WBVE will be performed seating in an ancillary-chair or sitting on the base of the vibrating platform, with 2.5 mm, 5Hz. Each session (5 series, 30-seconds on vibration, 1-minute of rest). It is expected improvement responses on sleep, BC and some clinical parameters. It is expected that this WBVE protocol will bring important clinical contributions for children with Down-syndrome.