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Soccer Headers May Be Linked to Balance Problems
 
(July 11, 2018)

INDIANAPOLIS, July 11, 2018 /PRNewswire-USNewswire/ --†Soccer players who head the ball more often may be more likely to have balance problems than players who do not head the ball as often, according to a preliminary study released today that will be presented at the American Academy of Neurology's Sports Concussion Conference†in Indianapolis July 20 to 22, 2018.†

"Soccer headers are repetitive subconcussive head impacts that may be associated with problems with thinking and memory skills and structural changes in the white matter of the brain," said study author John Jeka, PhD, of the University of Delaware in Newark, Del. "But the effect of headers on balance control has not been studied."†

For the study, 20 soccer players recruited from the community in Newark took a balance test where they walked along a foam walkway with their eyes closed under two conditions: with galvanic vestibular stimulation (GVS) and without GVS. For GVS, electrodes placed behind each ear stimulate the nerves that send messages from the balance system in the inner ear to the brain. So the stimulator can make you feel like you are moving when you are not. In this case, it made participants feel like they were falling sideways.



The soccer players, who had an average age of 22, also completed questionnaires about how many times they had headed the ball during the past year. The number of headers over a year for each participant ranged from 16 to 2,100, with an average of 451 headers. Those numbers were calculated by asking participants for the average number of headers during a practice and game, the average number of practices and games per week, and the average number of months per year that the player participated.

The study found that the players with the largest number of headers had the largest balance responses to GVS in both foot placement and hip adduction during the walking test, which indicated that they had vestibular processing and balance recovery problems. Researchers found for every 500 headers, foot placement response increased about 9 millimeters and hip adduction response increased about 0.2 degrees.

"Soccer players must have good balance to play the game well, yet our research suggests that headers may be undermining balance, which is key to all movement, and yet another problem now linked to headers," said study author Fernando V. Santos, PT, of the University of Delaware. "It is important that additional research be done to look more closely at this possible link with balance and to confirm our findings in larger groups of people."

A limitation of the study was that participants relied on memory when reporting how many times they headed the ball.

The study was supported by the National Institutes of Health.†

Learn more about concussion at www.BrainandLife.org, the American Academy of Neurology's free patient and caregiver magazine and website focused on the intersection of neurologic disease and brain health. Follow Brain & Lifeô on Facebook,†Twitter†and Instagram.

To learn more about the AAN's Sports Concussion Guideline and access resources, visit https://www.aan.com/concussion.

The American Academy of Neurology is the world's largest association of neurologists and neuroscience professionals, with over 34,000 members. The AAN is dedicated to promoting the highest quality patientcentered neurologic care. A neurologist is a doctor with specialized training in diagnosing, treating and managing disorders of the brain and nervous system such as Alzheimer's disease, stroke, migraine, multiple sclerosis, concussion, Parkinson's disease and epilepsy.

For more information about the American Academy of Neurology, visit http://www.aan.com†or find us on Facebook,†Twitter,†Instagram,†LinkedIn†and YouTube.

Cision View original content:http://www.prnewswire.com/news-releases/soccer-headers-may-be-linked-to-balance-problems-300679723.html

SOURCE American Academy of Neurology

Copyright 2014 PR Newswire. All Rights Reserved


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