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Abstract Details

Effect of Test Setting on Baseline Clinical Reaction Time Assessment in Collegiate Athletes
Sports Neurology
IN5 - (-)
005
When using objective test results as part of a concussion management program, it is critical that the athlete's baseline data represents their optimal performance. RTclin is a simple and reliable tool that is sensitive to the effects of sport-related concussion. While carrying out baseline assessments in groups is often more practical, the effect of individual versus group setting on baseline RTclin performance is unknown.
102 NCAA athletes (85 males, 83%) completed baseline RTclin assessments in both group and individual test settings during their pre-participation physical examinations. Mean RTclin was calculated over 8 trials, by converting the distance a rigid vertical body released by the examiner fell before being arrested by the athlete into a reaction time (ms), using the known acceleration of gravity. The order of testing was haphazardly assigned with 73 (72%) athletes being tested in the group setting first.
RTclin was 7 ms faster when tested in the individual versus the group setting (198 + 21 vs. 205 + 15 ms, p = .0016 for unadjusted paired t-test). When test order was controlled for using a linear mixed model, this difference failed to reach statistical significance (p = .0947) due to the presence of an order effect (second RTclin assessment averaged 10ms faster than first; p=.0004).
Baseline RTclin results in collegiate athletes did not differ when athletes were tested in a group versus individual setting. This suggests that group testing, which may be more practical during pre-participation physical examinations, is acceptable. The significant order effect identified suggests that a learning effect may be present. Additional practice trials should be considered to decrease the influence of this learning effect on baseline RTclin results.
Authors/Disclosures
Tyler Ladue
PRESENTER 		No disclosure on file
James T. Eckner, MD (University of Michigan Dept of PM&R) An immediate family member of Dr. Eckner has received personal compensation for serving as an employee of Autism Alliance of Michigan. The institution of Dr. Eckner has received research support from NIH. The institution of Dr. Eckner has received research support from Department of Defense. Dr. Eckner has received intellectual property interests from a discovery or technology relating to health care. Dr. Eckner has received personal compensation in the range of $500-$4,999 for serving as a CARE Consortium Publication Committee Member with Indiana University. Dr. Eckner has received personal compensation in the range of $0-$499 for serving as a 好色先生al Content Contributor with Move United.
Jeffrey S. Kutcher, MD, FAAN (Kutcher Clinic for Sports Neurology) Dr. Kutcher has received personal compensation in the range of $10,000-$49,999 for serving as a Consultant for National Basketball Association.
Jeffrey A. Kaye, MD, FAAN (Oregon Hlth Sci Univ.) Dr. Kaye has received personal compensation in the range of $10,000-$49,999 for serving on a Scientific Advisory or Data Safety Monitoring board for Eli Lilly. Dr. Kaye has stock in Life Analytics. The institution of Dr. Kaye has received research support from NIH. The institution of Dr. Kaye has received research support from NSF. The institution of Dr. Kaye has received research support from AbbVie. Dr. Kaye has received intellectual property interests from a discovery or technology relating to health care.