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Lower Neck Strength Among Youth Soccer Players Is Associated With An Increased Prevalence Of Concussion: 1486 Board #161 June 1 9

relationships between demographics, initial presentation measures, and one-month follow-up QOL and MDF. Variables significant in univariable analyses (p<0.05) were included in multivariable regression models. RESULTS: A total of 180 patients met initial inclusion and completed the one-month follow-up [% follow-up = 75% (180/240 eligible at initial visit)]: 100 (55.9%) were male, 136 (88.9%) Caucasian, and 28 (15.6%) were injured in football. Median age was 15 years (IQR: 13.0, 16.0). In the QOL model, a 10 point estimated increase in symptom severity score (Beta=-1.825; 95% CI: -3.335, -0.314) and no previous head injury (Mean Difference: -5.751; 95% CI: -11.089 -0.412) were associated with worse one-month QOL. A 0.06 point increase in initial visit ImPACT TM Reaction Time (Beta=-2.120; 95% CI: -3.898 -0.343) was associated with worse one-month MDF in the MDF model. CONCLUSION: Clinicians should be mindful of acute symptom burden and those with no history of concussion when considering potential for worse one-month post-injury QOL outcomes. Those with initial longer reaction times may be more likely to experience fatigue over the first month following concussion. Clinicians may need to consider early intervention in patients with these characteristics. Funded in part by the National Operating Committee on Standards for Athletic Equipment.