Featured Research

from universities, journals, and other organizations

Concussion testing makes everyone tired

Date:
January 9, 2012
Source:
Penn State
Summary:
Testing athletes for concussions may induce mental fatigue in subjects whether or not they have a head injury, according to researchers.

The circled front part of a DTI brain scan shows the most common site for tearing in the white matter in concussions.
Credit: Image courtesy of Penn State

Testing athletes for concussions may induce mental fatigue in subjects whether or not they have a head injury, according to Penn State researchers.

"Testing for a long period of time can induce fatigue," said Semyon Slobonouv, professor of kinesiology at Penn State. "But at the same time, fatigue is a symptom of concussion. How do you rule out fatigue if you get fatigued while taking the test?"

A standard way to test patients for concussion is to use an hour-and-a-half to two-hour set of neuropsychological tests -- enough to make anyone tired.

The Centers for Disease Control and Prevention estimate that nearly 4 million concussions occur in the United States every year. Concussed athletes who return to the field too quickly are three to six times more likely to get injured again in the same season, according to the American Association of Neurological Surgeons.

Several medical problems can occur when someone with a traumatic brain injury is not allowed enough time to heal. Boxer's encephalopathy, identified in the early 20th century, today is recognized as affecting any person who repeatedly suffers blows to the head.

Second-impact syndrome is a deadly second blow after a person has received one concussion and not fully healed. The second impact -- minutes, days or weeks after the first injury -- can cause nearly instant death.

The researchers created a baseline measurement of how tiring the neuropsychological tests made healthy, athletically active subjects. They report their study in the current issue of Clinical Neurophysiology.

Slobounov's goal is to test all athletes at the beginning of their season -- specifically in high-contact sports such as ice hockey, rugby and football. In this way, if it is suspected that an athlete has suffered a head injury, there is a personal baseline for comparison.

"Fatigue can be characterized by a sensation of weariness, reduction in motivation, attenuation in efficiency, or impairments in vigilance and task performance; it is a multidimensional construct with subjective, behavioral and physiological components," the researchers note in their article. "A comprehensive characterization of fatigue thus requires the assessment of all three domains."

A group of tests was administered to each athlete in the study. First the researchers determined a fatigue rating, which includes measures of both mental and physical fatigue. Then they administered a Stroop Neuropsychological Screening Test, which is composed of the names of five colors printed in any of those five colors. The researchers gave the Stroop test in two rounds, involving 112 words each. In the first round, athletes read the words out loud. In the second round, they said the color of the word. An electroencephalograph recorded brain waves during the test. At the end of the Stroop test a fatigue rating was measured again.

Working with Slobounov were Fiona Barwick, graduate student, psychology, and Peter Arnett, associate professor of psychology.


Story Source:

The above story is based on materials provided by Penn State. Note: Materials may be edited for content and length.


Cite This Page:

Penn State. "Concussion testing makes everyone tired." ScienceDaily. ScienceDaily, 9 January 2012. <www.sciencedaily.com/releases/2011/12/111206151532.htm>.
Penn State. (2012, January 9). Concussion testing makes everyone tired. ScienceDaily. Retrieved July 23, 2014 from www.sciencedaily.com/releases/2011/12/111206151532.htm
Penn State. "Concussion testing makes everyone tired." ScienceDaily. www.sciencedaily.com/releases/2011/12/111206151532.htm (accessed July 23, 2014).

Share This




More Mind & Brain News

Wednesday, July 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Idaho Boy Helps Brother With Disabilities Complete Triathlon

Idaho Boy Helps Brother With Disabilities Complete Triathlon

Newsy (July 23, 2014) An 8-year-old boy helped his younger brother, who has a rare genetic condition that's confined him to a wheelchair, finish a triathlon. Video provided by Newsy
Powered by NewsLook.com
Huge Schizophrenia Study Finds Dozens Of New Genetic Causes

Huge Schizophrenia Study Finds Dozens Of New Genetic Causes

Newsy (July 22, 2014) The 83 new genetic markers could open dozens of new avenues for schizophrenia treatment research. Video provided by Newsy
Powered by NewsLook.com
Why Do People Believe We Only Use 10 Percent Of Our Brains?

Why Do People Believe We Only Use 10 Percent Of Our Brains?

Newsy (July 22, 2014) The new sci-fi thriller "Lucy" is making people question whether we really use all our brainpower. But, as scientists have insisted for years, we do. Video provided by Newsy
Powered by NewsLook.com
Do Obese Women Have 'Food Learning Impairment'?

Do Obese Women Have 'Food Learning Impairment'?

Newsy (July 18, 2014) Yale researchers tested 135 men and women, and it was only obese women who were deemed to have "impaired associative learning." Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins