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Second International Symposium on Concussion in Sport

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001 RECALL OF CONCUSSION SYMPTOMS IN AUSTRALIAN FOOTBALLERS

A. Collie1,2*, M. Makdissi1, K. Bennell1, P. McCrory1,3.1Centre for Health, Exercise & Sports Medicine, University of Melbourne, Australia; 2CogState Ltd, Melbourne, Australia; 3 Brain Research Institute, Austin Hospital, Melbourne, Australia

Background: Clinical evaluation of concussed athletes often requires the athlete to subjectively recall details of their injury. Further, many studies of concussion have used self-reported concussion signs and symptoms to classify groups of athletes (eg, by number of previous concussions, presence of LOC or PTA). However, the accuracy of self-reported concussion history has been questioned. This study examined the recall of concussion signs and symptoms among recently injured athletes (ie, within the past 7 days) and healthy athletes who had not been concussed for at least 1 month.

Method: During 2002 and 2003, a computerised concussion history questionnaire was administered pre-season to 468 healthy, non-injured male Australian rules (AR) footballers, using the CogSport™ software. A similar questionnaire was administered to 51 male AR footballers within 7 days of concussive injuries occurring during the season. The questionnaire required athletes to recall details of their most recent concussion, including whether they experienced loss of consciousness (LOC), post-traumatic amnesia (PTA) and the type and number of symptoms experienced at the time of injury.

Results: The non-injured (22.6±3.9yrs) and concussed (22.6±3.6yrs) groups were of equivalent age and educational attainment. Of the non-injured footballers tested at baseline, 186 (39.7%) reported never being concussed. The remaining 282 (60.3%) reported 2.3±1.5 (range 1–8) prior concussions, with the majority (84.5%) occurring over 6mths ago. Only 92.6% of these athletes reported experiencing symptoms at their last concussion, with the most commonly reported symptoms being headache (85.1%), dizziness (68.4%), blurred vision (55.3%), drowsiness (45.0%) and confusion (41.1%). LOC was reported by 40.1% and PTA by 37.6% of athletes. Among …

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