title: Children with moderate to severe cerebral palsy may not benefit from stochastic vibration when developing independent sitting.
abstract: OBJECTIVE
  Determine sitting postural control changes for children with cerebral palsy (CP), using a perceptual-motor intervention and the same intervention plus stochastic vibration through the sitting surface.
  
  
  METHODS
  Two groups of children with moderate or severe CP participated in the 12 week interventions. The primary outcome measure was center of pressure data from which linear and nonlinear variables were extracted and the gross motor function measure (GMFM).
  
  
  RESULTS
  There were no significant main effects of intervention or time or an interaction. Both treatment groups increased the Lyapunov exponent values in the medial-lateral direction three months after the start of treatment as well as their GMFM scores in comparison with baseline.
  
  
  CONCLUSIONS
  The stochastic vibration did not seem to advance the development of sitting postural control in children between the ages of 2 and 6 years. However, perceptual-motor intervention was found beneficial in advancing sitting behavior.
authors.affiliation: a Center for Research in Human Movement Variability, Department of Biomechanics , University of Nebraska at Omaha , Omaha , NE , USA.
authors.forename: Anastasia
authors.initials: A
authors.lastname: Kyvelidou
authors.affiliation: b Rangos School of Health Sciences, Physical Therapy, Duquesne University , Pittsburgh , PA , USA.
authors.forename: Regina T
authors.initials: RT
authors.lastname: Harbourne
authors.affiliation: c Johns Hopkins Medicine, Center for Autism and Related Disorders , Baltimore , MD , USA.
authors.forename: Joshua
authors.initials: J
authors.lastname: Haworth
authors.affiliation: d College of Public Health, University of Nebraska Medical Center , Omaha , NE , USA.
authors.forename: Kendra K
authors.initials: KK
authors.lastname: Schmid
authors.affiliation: a Center for Research in Human Movement Variability, Department of Biomechanics , University of Nebraska at Omaha , Omaha , NE , USA.|d College of Public Health, University of Nebraska Medical Center , Omaha , NE , USA.
authors.forename: Nick
authors.initials: N
authors.lastname: Stergiou
mesh_terms: D002547:Cerebral Palsy / Q000503:physiopathology / Q000534:rehabilitation / Q000628:therapy*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D009048:Motor Skills; D000066530:Neurological Rehabilitation / Q000379:methods*; D026741:Physical Therapy Modalities / Q000009:adverse effects*; D011187:Posture; D014732:Vibration / Q000009:adverse effects / Q000627:therapeutic use*
keywords: Biomechanics; developmental disabilities; motor development; posture