Abstract:
OBJECTIVE:To determine whether exposure to repetitive head impacts over a single season negatively affects cognitive performance in collegiate contact sport athletes. METHODS:This is a prospective cohort study at 3 Division I National Collegiate Athletic Association athletic programs. Participants were 214 Division I college varsity football and ice hockey players who wore instrumented helmets that recorded the acceleration-time history of the head following impact, and 45 noncontact sport athletes. All athletes were assessed prior to and shortly after the season with a cognitive screening battery (ImPACT) and a subgroup of athletes also were assessed with 7 measures from a neuropsychological test battery. RESULTS:Few cognitive differences were found between the athlete groups at the preseason or postseason assessments. However, a higher percentage of the contact sport athletes performed more poorly than predicted postseason on a measure of new learning (California Verbal Learning Test) compared to the noncontact athletes (24% vs 3.6%; p < 0.006). On 2 postseason cognitive measures (ImPACT Reaction Time and Trails 4/B), poorer performance was significantly associated with higher scores on several head impact exposure metrics. CONCLUSION:Repetitive head impacts over the course of a single season may negatively impact learning in some collegiate athletes. Further work is needed to assess whether such effects are short term or persistent.
journal_name
Neurologyjournal_title
Neurologyauthors
McAllister TW,Flashman LA,Maerlender A,Greenwald RM,Beckwith JG,Tosteson TD,Crisco JJ,Brolinson PG,Duma SM,Duhaime AC,Grove MR,Turco JHdoi
10.1212/WNL.0b013e3182582fe7subject
Has Abstractpub_date
2012-05-29 00:00:00pages
1777-84issue
22eissn
0028-3878issn
1526-632Xpii
WNL.0b013e3182582fe7journal_volume
78pub_type
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