• Doug King, Trevor Clark, and Conor Gissane.
• Sports Performance Research Institute New Zealand, School of Sport and Recreation, Faculty of Health and Environmental Science, Auckland University of Technology, New Zealand. dking@aut.ac.nz
• J. Neurol. Sci. 2012 Sep 15; 320 (1-2): 16-21.

AimThis study undertook to use the K-D sideline test with the SCAT2 to see if concussions could be identified in amateur rugby league players over a representative competition period.MethodA prospective cohort study was conducted on two teams participating in an amateur rugby league. All players were tested for signs of concussion utilising the K-D test and players with longer times than their baseline scores undertook a further concussion assessment with the SCAT2.ResultsFive athletes with suspected concussion were evaluated by K-D testing. Three concussions were associated with witnessed events during the matches and two athletes were identified by the team medic as having longer K-D time scores incidentally post-match compared to baseline. Post-match K-D scores for all concussed athletes were worse than baseline for those with reported or witnessed concussion events (7s; 5.0-7.1; p=0.025) and for those identified incidentally (>5s; 8.9-9.1s). Both groups also reported more symptoms on the PCSS (a part of the SCAT2) post-match.DiscussionIn this rugby cohort, the K-D test was not only useful in identifying changes in players with witnessed head trauma, but in identifying changes in players with an un-witnessed suspected concussion.Copyright © 2012 Elsevier B.V. All rights reserved.

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