title: The effects of mild traumatic brain injury on postural control.
abstract: The purpose of this study was to investigate the effects of mild traumatic brain injury (mTBI) on multiple postural indices that characterize body sway behaviour.
  
  
  
  The body's centre of pressure (COP) displacement was recorded from 11 individuals with a history of mTBI (29.4 ± 6.7 years old) and 11 healthy controls (26.8 ± 3.7 years old) performing bipedal stance on a force platform for 120 seconds. Spatio-temporal (area, amplitude and mean velocity of the COP displacement) and frequency characteristics (frequency containing 80% of the power spectral density) of the body oscillation, as well as its dynamic characteristics (sample entropy estimate of the COP displacement) were extracted from COP signals.
  
  
  
  All postural indices studied were significantly affected by mTBI (p < 0.010). Participants with a history of mTBI presented a larger, slower, and more random body oscillation compared to controls.
  
  
  
  The results suggest that (a) balance deficits can be recognized as an effect of mTBI; (b) balance deficits induced by mTBI are multi-dimensional, affecting all three domains included in this study; and
authors.affiliation: a Motor Control Laboratory , School of Physical Therapy and Rehabilitation Science.
authors.forename: Adriana M
authors.initials: AM
authors.lastname: Degani
authors.affiliation: a Motor Control Laboratory , School of Physical Therapy and Rehabilitation Science.
authors.forename: Maria M
authors.initials: MM
authors.lastname: Santos
authors.affiliation: a Motor Control Laboratory , School of Physical Therapy and Rehabilitation Science.|b Neural Injury Center.
authors.forename: Charles T
authors.initials: CT
authors.lastname: Leonard
authors.affiliation: b Neural Injury Center.|c Department of Biomedical & Pharmaceutical Sciences , The University of Montana , Missoula , MT , USA.
authors.forename: Thomas F
authors.initials: TF
authors.lastname: Rau
authors.affiliation: b Neural Injury Center.|c Department of Biomedical & Pharmaceutical Sciences , The University of Montana , Missoula , MT , USA.
authors.forename: Sarjubhai A
authors.initials: SA
authors.lastname: Patel
authors.affiliation: a Motor Control Laboratory , School of Physical Therapy and Rehabilitation Science.|b Neural Injury Center.
authors.forename: Sambit
authors.initials: S
authors.lastname: Mohapatra
authors.affiliation: a Motor Control Laboratory , School of Physical Therapy and Rehabilitation Science.|b Neural Injury Center.
authors.forename: Alessander
authors.initials: A
authors.lastname: Danna-Dos-Santos
mesh_terms: D000328:Adult; D001924:Brain Concussion / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008297:Male; D004856:Postural Balance / Q000502:physiology*; D055815:Young Adult
keywords: Traumatic brain injury; balance; concussion; mild brain injury