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BACKGROUND AND OBJECTIVEThe Centers for Disease Control and Prevention estimates that up to 3.8 million concussions occur annually in the United States. Studies have shown that a history of concussion
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BACKGROUND AND OBJECTIVEThe Centers for Disease Control and Prevention estimates that up to 3.8 million concussions occur annually in the United States. Studies have shown that a history of concussion increases an athlete′s risk of sustaining a subsequent concussion. This study investigated the association between dynamic balance performance and concussion injury.
METHODSSubjects were 109 elite Irish rugby players. All participants underwent a baseline Y Balance Test (YBT), with an inertial sensor. The outcome variable of interest was the diagnosis of concussion during the ensuing season, with that diagnosis made using the Head Injury Assessment Tool (HIA) in compliance with the world rugby guidelines. Recorded for each player was a self reported concussion history, playing position, age group and dynamic balance variables.
RESULTSAt baseline, 40% of the players reported of history of concussion, while 19.3% of the players sustained a concussion during the study season. There was no significant difference in baseline testing results between those who had a history of concussion and those who did not. Those who sustained a new concussion demonstrated significantly worse dynamic balance when reaching in the anterior direction, as compare to the nonconcussed group. A regression model revealed that, when controlling for concussion history, those with poor balance performance were at a 3.63 greater risk of sustaining a concussion, as compared with those with optimal balance performance.
CONCLUSIONThis study of elite rugby players found an association between reduced dynamic balance performance and the risk of sustaining another concussion.
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