The results of this systematic review identify the consistent and prevalent indicators of concussion and their associations , derived from the strongest evidence in the published literature .
BACKGROUND Currently , there is no evidence -based definition for concussion that is being uniformly applied in clinical and research setting s. OBJECTIVE To conduct a systematic review of the highest- quality literature about concussion and to assemble evidence about the prevalence and associations of key indicators of concussion .
The goal was to establish an evidence -based foundation from which to derive , in future work , a definition , diagnostic criteria , and prognostic indicators for concussion .
Visuomotor Response Time in Children With a Mild Traumatic Brain Injury
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 . Design Prospect i ve cohort study . Setting Pediatric trauma center . Participants 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 . Intervention Assessment s of  response time  were conducted at 1 , 4 , and 12 weeks after mTBI and at corresponding time intervals for the control children . Main Outcome Measures 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 underst and the severity of these problems and determine their impact , if any , on participation in physical activities
The results of this systematic review identify the consistent and prevalent indicators of concussion and their associations , derived from the strongest evidence in the published literature .
BACKGROUND Currently , there is no evidence -based definition for concussion that is being uniformly applied in clinical and research setting s. OBJECTIVE To conduct a systematic review of the highest- quality literature about concussion and to assemble evidence about the prevalence and associations of key indicators of concussion .
The goal was to establish an evidence -based foundation from which to derive , in future work , a definition , diagnostic criteria , and prognostic indicators for concussion .