title: Visuomotor response time in children with a mild traumatic brain injury.
abstract: OBJECTIVE
  Compare the visuomotor response times of children after a mild traumatic brain injury (mTBI) with those of noninjured children matched for age, sex, and premorbid level of physical activity.
  
  
  METHODS
  Prospective cohort study.
  
  
  METHODS
  Pediatric trauma center.
  
  
  METHODS
  Thirty-eight children aged 7 to 16 years in each group. Children with mTBI had a mean Glasgow Coma Scale score of 14.8 and were considered normal on a neurological assessment carried out at the time of hospital discharge. Noninjured children were friends of those with mTBI.
  
  
  METHODS
  Assessments of response time were conducted at 1, 4, and 12 weeks after mTBI and at corresponding time intervals for the control children.
  
  
  METHODS
  The response speed subtest of the Bruininks-Oseretsky Test of Motor Proficiency (BOTMP); reaction and movement time for upper and lower extremities, for simple, choice, and reversed choice response time paradigms.
  
  
  RESULTS
  Over the assessment period, children with mTBI performed worse than the control group only on the response speed subtest of the BOTMP. The mTBI children however tended to have slower movement times 1 week postinjury for the reversed choice response time paradigm for the lower extremities.
  
  
  CONCLUSIONS
  Some children with mTBI may have some problems in response time persisting until 12 weeks postinjury. Further research is required to better identify and understand the severity of these problems and determine their impact, if any, on participation in physical activities.
authors.affiliation: Ecole de réadaptation, Faculté de Médecine, Université de Montréal, Montreal, Quebec, Canada. Isabelle.gagnon6@sympatico.ca
authors.forename: Isabelle
authors.initials: I
authors.lastname: Gagnon
authors.forename: Bonnie
authors.initials: B
authors.lastname: Swaine
authors.forename: Debbie
authors.initials: D
authors.lastname: Friedman
authors.forename: Robert
authors.initials: R
authors.lastname: Forget
mesh_terms: D000293:Adolescent; D001930:Brain Injuries / Q000523:psychology*; D002648:Child; D006801:Humans; D009048:Motor Skills; D011930:Reaction Time