Allison Perry

By

College: Health Sciences

Effects of a Concussion May Last Longer than Symptoms, Study Shows

Published: Feb 29, 2012

 

LEXINGTON, Ky. (Feb. 29, 2012) — A study recently published by the University of Kentucky's Scott Livingston shows that physiological problems stemming from a concussion may continue to present in the patient even after standard symptoms subside.

 

Currently, concussions are diagnosed and monitored through a patient's self-reported symptoms (including headache, confusion or disorientation, poor concentration, and memory loss) and through computerized neuropsychological testing programs, which measure cognitive abilities including attention and concentration, cognitive processing, learning and memory, and verbal fluency. Post-concussion abnormalities in either of these markers typically return to a normal level within five to 10 days following the injury.

 

Conducted while he was a graduate student at the University of Virginia, Livingston's study was just published in the February 2012 issue of the Journal of Clinical Neurophysiology. The study used motor-evoked potentials (MEPs) — an electrophysiological measurement that can provide hard evidence for changes in brain function — to determine if any physiological abnormalities followed a similar recovery pattern to self-reported symptoms and neuropsychological testing.

 

During an MEP test, subjects have electrodes placed on a limb – such as the hand or foot. A magnetic stimulating device is placed over  the head, and they receive a brief pulse of magnetic stimulation to the brain. The "reaction time" — the amount of time it takes for the subject's limb to receive the response from the brain  after the stimulation — is recorded.

 

Livingston's study enrolled 18 collegiate athletes — nine who had been concussed within the previous 24 hours, and nine who had not experienced a concussion. Each concussed subject was matched with a non-concussed subject using age, gender, sport, position played, prior concussion history, and history of learning disability or attention deficit-hyperactivity disorder as inclusion criteria.

 

Subjects were evaluated for evidence of concussion based on self-reported symptoms, computerized neurocognitive test performance, and MEPs for a period of 10 days. Post-concussion symptoms were more frequent and greater in severity in the immediate timeframe after the injury (24-72 hours) and decreased in the following days. Some subjects reported no symptoms by day 10, though others did not have complete symptoms resolution by that time. Neurocognitive deficits followed a similar pattern, proving greater just after the injury and returning to normal (or closer to normal) by day 10.

 

MEPs, however, showed delays in response time and smaller MEP size which continued up to day 10, with these physiological changes actually increasing as the concussed athletes’ symptoms decreased and cognitive functioning improved.

 

Livingston, director of the UK Concussion Assessment Research Lab and assistant professor in the Department of Rehabilitation Sciences, says these findings are significant for both athletes and sports medicine clinicians.

 

"Further investigation of MEPs in concussed athletes is needed, especially to assess how long the disturbances in physiological functioning continue after those initial ten days post-injury," Livingston said. "But in the meantime, sports medicine personnel caring for concussed athletes should be cautious about relying solely on self-reported symptoms and neurocognitive test performances when making return-to-play decisions."

 

Livingston's research lab recently began a new program to further study MEPs in athletes pre- and post-concussion. At UK, all athletes who participate in a contact sport — including football, soccer, volleyball, diving, gymnastics, and basketball — are assessed preseason using MEP and neurocognitive testing to establish a baseline measure for each athlete.

 

If an athlete receives a concussion, he or she will come back to the lab as soon as possible after the injury for follow-up testing. This approach allows researchers to get a clearer idea of the extent of an athlete's injury, Livingston says.

 

 

For a transcript of this video, click here.

 

Neurocognitive tests, such as the Immediate Post-Concussion Assessment and Testing (ImPACT)™, are a valuable component of concussion management. While major professional sports organizations like the NFL and NHL, as well as hundreds of colleges, universities, and high schools across the United States follow this standard, UK Athletics did not have a formal, standardized neurocognitive testing protocol in place until last year.  The addition of the MEP assessment in the preseason testing and post-concussion management  are  unique — UK is the first and only collegiate athletics program to implement a baseline physiologic measure of brain function.  

 

“No other college of university in the country is currently assessing physiologic brain responses and using this information to determine the extent of the functional brain injury," Livingston said. "This type of information enables us to closely track recovery, which may not correspond to the decrease in concussion symptoms or recovery of memory and other cognitive functions.”

 

Learn more about concussion research at UK with Drs. James Jagger, Dan Han, and Scott Livingston in "UK at the Half," a radio interview broadcast at halftime of the Feb. 11 UK-Vanderbilt basketball game.

 

 

MEDIA CONTACT: Allison Perry, (859) 323-2399 or allison.perry@uky.edu

 

 

livingston_marco_results.jpglivingston_marco_2.jpgmarco_foot.jpg
File Downloads
Tags:
February
 
1
Graduate Student Congress Meeting (February)
Mon
2
Bill Adams: Blue Madness
Bill Adams: Blue Madness
Bill Adams: Blue Madness
Bill Adams: Blue Madness
Bill Adams: Blue Madness
Open House: Selections from the John and Sue Wieland Collection
Open House: Selections from the John and Sue Wieland Collection
Open House: Selections from the John and Sue Wieland Collection
Open House: Selections from the John and Sue Wieland Collection
Open House: Selections from the John and Sue Wieland Collection
Open House: Selections from the John and Sue Wieland Collection
Open House: Selections from the John and Sue Wieland Collection
Open House: Selections from the John and Sue Wieland Collection
Tue
3
K Crew Recruitment
Last Day to Drop a Course Without Appearing on Transcript
Bill Adams: Blue Madness
Open House: Selections from the John and Sue Wieland Collection
Wed
4
K Crew Recruitment
Bill Adams: Blue Madness
Undergraduate Research Information Session
Bill Adams: Blue Madness
Open House: Selections from the John and Sue Wieland Collection
Thu
5
K Crew Recruitment
Bill Adams: Blue Madness
Open House: Selections from the John and Sue Wieland Collection
Explore Blue
Off-Campus Student Services' Wildcat Apartment Hop #1
Panel Discussion: Historic Homes
Fri
6
K Crew Recruitment
Bill Adams: Blue Madness
Open House: Selections from the John and Sue Wieland Collection
Sat
7
K Crew Recruitment
Bill Adams: Blue Madness
Open House: Selections from the John and Sue Wieland Collection
Sun
8
K Crew Recruitment
Sex and Chocolate
Law School Prep Workshop
Mon
9
K Crew Recruitment
Healthy Relationships Workshop
How to Package Communication and Technical Skills on your Resume
Bill Adams: Blue Madness
Open House: Selections from the John and Sue Wieland Collection
2016 Distinguished Industry Lecture Series
Tue
10
K Crew Recruitment
Last Day to Receive 50% Refund
Pinterest Party #1
Off-Campus Student Association Information Session
Get Yourself Tested!
Showcase your Talents: Building a Strong Portfolio
An Evening with Tatyana Ali and Amir Windom: Progression Towards Success
Bill Adams: Blue Madness
Open House: Selections from the John and Sue Wieland Collection
How to Survive a Plague
Wed
11
K Crew Recruitment
Coffee & Canvases
Off-Campus Student Association Information Session
Study Abroad in Berlin!
Bill Adams: Blue Madness
Open House: Selections from the John and Sue Wieland Collection
Thu
12
K Crew Recruitment
Explore Blue
Bill Adams: Blue Madness
Open House: Selections from the John and Sue Wieland Collection
Fri
13
K Crew Recruitment
Bill Adams: Blue Madness
Open House: Selections from the John and Sue Wieland Collection
Workshop: The Artist Statement
Sat
14
K Crew Recruitment
Bill Adams: Blue Madness
Open House: Selections from the John and Sue Wieland Collection
Sun
15
K Crew Recruitment
See ICT
Patterson School Guest Speaker Series
Mon
16
K Crew Recruitment
Bill Adams: Blue Madness
Open House: Selections from the John and Sue Wieland Collection
See ICT
UK Women's Forum February Board Meeting
Tue
17
K Crew Recruitment
Food For Thought
Bill Adams: Blue Madness
Open House: Selections from the John and Sue Wieland Collection
Wed
18
Undergraduate Research Information Session
Soup & Substance: Real Talk, Real Issues, & Real People Series
Bill Adams: Blue Madness
Open House: Selections from the John and Sue Wieland Collection
Thu
19
PharmD Interviews
Explore Blue
Bill Adams: Blue Madness
Open House: Selections from the John and Sue Wieland Collection
Off-Campus Student Services' Wildcat Apartment Hop #2
SAB Underground Formal
Fri
20
PharmD Interviews
Bill Adams: Blue Madness
Open House: Selections from the John and Sue Wieland Collection
Sat
21
Bill Adams: Blue Madness
Open House: Selections from the John and Sue Wieland Collection
Sun
22
Undergraduate Research Information Session
Mon
23
Bill Adams: Blue Madness
Open House: Selections from the John and Sue Wieland Collection
Tue
24
Bill Adams: Blue Madness
Open House: Selections from the John and Sue Wieland Collection
UK Elder Care Lunch & Learn - Don't Blame It On Aging
Ravi Zacharias at Memorial Coliseum
Wed
25
Bill Adams: Blue Madness
Open House: Selections from the John and Sue Wieland Collection
Thu
26
Explore Blue
Bill Adams: Blue Madness
Open House: Selections from the John and Sue Wieland Collection
Dimensions of Political Ecology Conference
Eday Talk by Georgetown Toyota President Wil James
Do What You Are: Connecting Personalities w/ Profession
Off- Campus Student Services' Wildcat Apartment Hop #3
Concert in the Museum: Central Music Academy
Fri
27
Dimensions of Political Ecology Conference
Bill Adams: Blue Madness
Open House: Selections from the John and Sue Wieland Collection
UK E-Day
Sat
28
Bill Adams: Blue Madness
Bill Adams: Blue Madness
Bill Adams: Blue Madness
DanceBlue Rave Hour
Bill Adams: Blue Madness
Open House: Selections from the John and Sue Wieland Collection
Open House: Selections from the John and Sue Wieland Collection
Sun
29
Monday through Friday - Midterm Grading window is open. The mid-term grading window will close at midnight on March 11.
Monday through Wednesday - Students are prohibited from changing academic major
Bodies Of Evidence: Provocations: A Transnational Feminist History Project
Mon
 
 
 
 
 
Feb 06
Bill Adams: Blue Madness 02/06/2016

Repeats every day on January, February, March, April every Sunday and every Tuesday and every Wednesday and every Thursday and every Friday and every Saturday until Mon Apr 04 2016 .
Sun, 02/07/2016

Repeats every day on January, February, March, April every Sunday and every Tuesday and every Wednesday and every Thursday and every Friday and every Saturday until Sun Apr 03 2016 .
Sun, 02/07/2016

Mon, 02/08/2016

Repeats every day on January, February, March, April every Sunday and every Tuesday and every Wednesday and every Thursday and every Friday and every Saturday until Sun Apr 03 2016 .
Tue, 02/09/2016

Reset Page