title: Computerized dynamic posturography detects balance deficits in individuals with a history of chronic severe traumatic brain injury.
abstract: Mild balance deficits can be challenging to detect in individuals with long-standing traumatic brain injuries. This study compared Computerized Dynamic Posturography (CDP) scores from individuals with traumatic brain injuries (TBI) to controls to determine if CDP could differentiate between the two groups and determine if there was a learning effect associated with testing that could be used to guide evaluation of baseline balance.
  
  
  
  Ten ambulatory individuals with a history of severe TBI and 10 individuals without participated in three CDP sessions (24-72 hours apart). During each session, participants performed the Berg Balance Test, Dynamic Gait Index and three trials of a standardized balance assessment and Dynamic Movement Analysis (DMA) scores were recorded for each test.
  
  
  
  Individuals with TBI scored 93% higher (i.e. reflecting poorer balance) than the control group. The group with TBI exhibited 6.6-times more variability compared to the control group, with estimated variances of 0.3407 and 0.0517, respectively. A learning effect was detected in the group with TBI on the first day of testing (βTBI F = -0.1241, p-value < 0.01).
  
  
  
  The CDP system detected balance differences between individuals with TBI and controls. Given the documented learning effect, the best of three trials should be used to accurately assess baseline scores.
authors.affiliation: a Movement and Neurosciences Center , Institute for Rehabilitation Science and Engineering, Madonna Rehabilitation Hospital , Lincoln , NE , USA.
authors.forename: Thad W
authors.initials: TW
authors.lastname: Buster
authors.affiliation: b Radiation Epidemiology/Biostatistics Branches , National Cancer Institute/National Institutes of Health , Rockville , MD , USA.
authors.forename: Pavel
authors.initials: P
authors.lastname: Chernyavskiy
authors.affiliation: c Health and Human Performance Department , Concordia University, Nebraska , Seward , NE , USA.
authors.forename: Nolan R
authors.initials: NR
authors.lastname: Harms
authors.affiliation: d The Ohio State University , School of Health and Rehabilitation Sciences , Columbus , OH , USA.
authors.forename: E Grace
authors.initials: EG
authors.lastname: Kaste
authors.affiliation: a Movement and Neurosciences Center , Institute for Rehabilitation Science and Engineering, Madonna Rehabilitation Hospital , Lincoln , NE , USA.
authors.forename: Judith M
authors.initials: JM
authors.lastname: Burnfield
mesh_terms: D000328:Adult; D020208:Brain Injury, Chronic / Q000150:complications*; D003936:Diagnosis, Computer-Assisted / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D004856:Postural Balance / Q000502:physiology*; D012678:Sensation Disorders / Q000175:diagnosis* / Q000209:etiology*; D012720:Severity of Illness Index; D055815:Young Adult
keywords: Traumatic brain injury; assessment; disability; measurement; rehabilitation