Navigation Links
Visual test effective in diagnosing concussions in collegiate athletes
Date:8/31/2011

PHILADELPHIA - A sideline visual test effectively detected concussions in collegiate athletes, according to a team of researchers from the Perelman School of Medicine at the University of Pennsylvania. Concussed athletes scored an average of 5.9 seconds slower (worse) than the best baseline scores in healthy controls on the timed test, in which athletes read a series of numbers on cards and are scored on time and accuracy. This quick visual test, easily administered on the playing field, holds promise as a complement to other diagnostic tools for sports-related concussion.

Up to 3.8 million Americans sustain sports-related concussions each year, yet current methods fall short from objectively and quickly measuring the presence and severity of a concussion. Evidence-based protocols are needed, both on sidelines to prevent injured players from returning to play too soon, and off the field, for physicians to more accurately and effectively diagnose, treat and rehabilitate patients suffering from concussions.

"This test has demonstrated its ability to provide objective evidence to aid medical professionals and trainers in determining which athletes need to come out of games after a blow to the head," said Laura Balcer, MD, MSCE, professor of Neurology and senior author on the paper. "We'll continue to measure the test's effectiveness in different groups - players who play the same position who have and have not suffered concussions, for instance. It is our hope that the new test, once validated, can be folded into the current sideline battery of tests for concussion, as no single test at this time can be used to diagnose or manage concussion."

The King-Devick test, originally used as a dyslexia test, detects impaired eye movements and rapid eye movements called saccades, indicating diminished brain function. A previous study, published in Neurology, of this visual screening test for concussion found that boxers and mixed martial arts (MMA) fighters who had head trauma during their matches had significantly higher (worse) post-fight time test scores. Fighters who lost consciousness were on average 18 seconds slower on the test after their bouts.

In this follow-up study, published online in the Journal of the Neurological Sciences, 219 collegiate athletes were given the 2 minute test as a baseline at the start of the sports season. Athletes who sustained concussions - an impulse blow to the head or body that results in transient neurologic signs or symptoms - in games or practices during the season were given the test immediately on the sidelines.

Athletes who suffered concussions had significantly higher (worse) time scores compared to baselines. In the injured group, there were occasional accuracy errors while reading the cards, with one athlete making four errors and two others making one mistake each following a blow to the head. Two of these three did not have significantly slower test-taking times, suggesting that there may be a tradeoff of accuracy for increased time to complete the test in some concussed athletes. Researchers proposed adding a defined amount of time to the cumulative score for every error on the test, to account for the tradeoff of accuracy for time.

Researchers also looked at test improvement over time and post-game fatigue. A group tested following an intense scrimmage showed no signs of fatigue and actually improved their test scores compared to baseline. Another group tested before and after the season showed modest improvements, likely a result of learning effects common in many performance measures.

This rapid sideline visual screening tool can complement other diagnostic assessments for sports-related concussion.


'/>"/>

Contact: Kim Menard
kim.menard@uphs.upenn.edu
215-662-6183
University of Pennsylvania School of Medicine
Source:Eurekalert

Related medicine news :

1. People with body-image disorders process big picture visual information abnormally
2. Guide vests -- robotic navigation aids for the visually impaired
3. Strobe eyewear training may improve visual abilities
4. Sections of retinas regenerated and visual function increased with stem cells from skin
5. The brain performs visual search near optimally
6. Brains of People with Autism Focus More on Visual Skills
7. NeuroImage: Multiplexing in the visual brain
8. Visual prostheses: Symposium to explore combining functional endpoints
9. Eye expo at UH offers resources to the visually impaired
10. JPEG for the mind: How the brain compresses visual information
11. Kids With Autism May Lack Key Visual Skills, Study Finds
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/26/2016)... ... ... PawPaws brand pet supplements owned by Whole Health Supply is ... of felines. The formula is all-natural and is made from Chinese herbs that have ... Kidney Support Supplement Soft Chews are Astragalus Root Extract and Rehmannia Root Extract ...
(Date:6/25/2016)... ... June 25, 2016 , ... ... and applications at AcademyHealth’s Annual Research Meeting June 26-28, 2016, at the Hynes ... important health care topics including advance care planning, healthcare costs and patient and ...
(Date:6/25/2016)... ... June 25, 2016 , ... "With 30 hand-drawn hand gesture animations, FCPX users ... - CEO of Pixel Film Studios. , ProHand Cartoon’s package transforms over 1,300 ... Pro X . Simply select a ProHand generator and drag it above media or ...
(Date:6/25/2016)... ... June 25, 2016 , ... Dr. Calvin Johnson ... Recently, he has implemented orthobiologic procedures as a method for treating his patients. ... the first doctors to perform the treatment. Orthobiologics are substances that orthopaedic surgeons ...
(Date:6/24/2016)... ... June 24, 2016 , ... A recent article ... are unfamiliar with. The article goes on to state that individuals are now more ... these less common operations such as calf and cheek reduction. The Los Angeles area ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... Calif. , June 24, 2016  American Respiratory Labs (ARL), ... is now able to perform sophisticated lung assessments in patients, homes, ... , Inc. Patients are no longer limited to ... EasyOne PRO ® , ARL patients like Jeanne R. of ... in the comfort of her own home. ...
(Date:6/24/2016)... Belgium , June 24, 2016 ... the appointment of Dr. Edward Futcher ... Non-Executive Director, effective June 23, 2016.Dr. Futcher was ... Nominations and Governance Committees.  As a non-executive member ... independent expertise and strategic counsel to VolitionRx in ...
(Date:6/23/2016)... BEVERLY HILLS, Calif. , June 23, 2016 ... faced the many challenges of the current process. Many of ... option because of the technical difficulties and high laboratory costs ... would have to offer it at such a high cost ... to afford it. Dr. Parsa Zadeh , ...
Breaking Medicine Technology: