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  • Title: Modest utility of brief oculomotor test for concussion screening in military mixed-martial arts training.
    Author: Dretsch MN, Fauth J, Moya MM, Connaboy C, Kontos A.
    Journal: Brain Inj; 2019; 33(13-14):1646-1651. PubMed ID: 31454275.
    Abstract:
    Primary Objective: To assess a rapid concussion screening tool in Service members participating in combatives (mixed martial arts; MMA) training school.Research Design: This prospective study included baseline and either post-training or post-injury assessments.Methods and Procedures: Baseline (N = 152) and post-assessments (n = 129) of Service members included symptom reporting and the King-Devick (KD) oculomotor test.Outcomes and Results: Headache, balance problems, and dizziness were the most severe concussive symptoms. KD scores for those who sustained a concussion (n = 31) were significantly worse compared to baseline, but not for participants who finished the course with no concussion (n = 98). For concussed, 74.2% had scores that were worse from baseline (slower) compared to 39.8% of the post-training group. KD scores were worse 34.4% more in individuals who sustained a concussion compared to those who did not. However, there was poor discriminant ability of the KD test (AUC = .60, sensitivity/specificity) to distinguish between concussed and non-concussed participants.Conclusions: The KD test should not be used in isolation as a sideline or field concussion assessment during training scenarios. Rather, it has potential utility for evaluating individual cases to supplement decision making when an established baseline is available.
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