Demonstration and test cards for the King–Devick (K–D) Test: a rapid sideline screening tool for sports-related concussion based on the time to perform rapid. Background The King-Devick (KD) test is an objective clinical test of eye movements that has been used to screen for concussion. A rapid, cost-effective, and reliable tool that facilitates diagnosis of concussion is needed. The King-Devick (K-D) test is a vision-based tool of rapid number.

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Other studies 24,25 have shown improvement and return to baseline.

The King–Devick test for sideline concussion screening in collegiate football

School sport concussions draw national attention as more states draft return-to-play laws. The King—Devick K—D test requires dwvick, eye movements, language function concussiom attention in order to perform and has been proposed as a promising tool for assessment of concussion. Slowing of number naming speed by King—Devick test in Parkinson’s disease.

Mayo Clinic has a financial interest in the technology described in this press release. So some of our athletes we baseline take three or four times to get a good baseline.

Post-season K—D test, median range.

Downloads for week of On-field predictors of neuropsychological and symptoms deficit following sports-related concussion. Text order for the K-D test to be used effectively over time and to be administered by different testers, such as athletic trainers, the interrater and test-retest reliability of this measure must be assessed. Packaging for the test will indicate it is offered in association with Mayo Clinic. Wilcoxon signed-rank test was also used concussuon compare K—D time scores pre- and post-exercise for the basketball teams.


Rapid screening tools that can be practically implemented into the sideline evaluation of athletes are vital to the detection of concussive injuries. Demonstration and test cards for the King-Devick K-D Test, a candidate rapid sideline screening for concussion based on measurement of speed of rapid number naming To perform the K-D test, participants are asked to read the numbers on each card from left to right as quickly as possible but without making any errors.

For this study of collegiate kinh, athletes were enrolled at the time of pre-season physical examinations for the — season. For purposes of determining test-retest reliability of precompetition K-D scores, all boxers were tested twice within a minute period before their sparring session by the same examiners. Postfight testing was delayed by 30 to 60 minutes for 3 fighters due to nonhead injuries. Concussion assessment and management. National Football League experiences with return to play after concussion.

Those with loss of consciousness showed the greatest worsening from prefight to postfight. Arch Neurol ; Table 1 Characteristics of boxers and mixed martial arts fighters.

The King-Devick test as a determinant of head trauma and concussion in boxers and MMA fighters

J Neuropathol Exp Neurol ; Given the common endpoints of head trauma and LOC, and their uniform definitions for both the boxers and MMA fighters, data were analyzed based on the combined study cohort.

Because the K-D test captures many aspects of function, including subcortical subconscious pathways that extend beyond concussiln movements, this test may help coaches and trainers with game decisions regarding removal of a player who may have been concussed.


Stevens jeffFri, Jan 8, 7: Changes in scores from prefight to postfight also reflected this pattern and showed more separation between those with and without head trauma than the postfight scores alone.

Post-season testing demonstrated improvement of scores and was consistent with known learning effects For this cross-sectional study, boxers and MMA fighters were recruited and enrolled prior to sparring sessions and matches conducted in the Boston, MA, area.

Impaired eye movements in post-concussion syndrome indicate suboptimal brain function beyond the influence of depression, malingering or intellectual ability. J Neurotrauma ; Recent work investigating the sensitivity of sideline concussion tests used in collegiate level athletics has shown that key components of the SCAT2, the SAC and BESS, failed to capture all concussions.

Vision cooncussion is additive to the sideline assessment of sports-related concussion. Chronic traumatic encephalopathy in the National Football League.

Eye movement abnormalities in multiple sclerosis. Neurology Today ; Chronic traumatic encephalopathy in athletes: Articles from Neurology are provided here courtesy of American Dwvick of Neurology. Boxers were given standardized instructions for the K-D test. Temporal window of metabolic brain vulnerability to concussion: All concussed athletes, with the exception of two, failed sideline SCAT2 testing.

Coaches Concussion Reporting Game Plan: