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Head impacts in contact sports may reduce learning in college athletes

Date:
May 16, 2012
Source:
American Academy of Neurology (AAN)
Summary:
A new study suggests that head impacts experienced during contact sports such as football and hockey may worsen some college athletes’ ability to acquire new information.

A new study suggests that head impacts experienced during contact sports such as football and hockey may worsen some college athletes' ability to acquire new information.
Credit: modestil / Fotolia

A new study suggests that head impacts experienced during contact sports such as football and hockey may worsen some college athletes' ability to acquire new information. The research is published in the May 16, 2012, online issue of Neurology, the medical journal of the American Academy of Neurology.

The study involved college athletes at three Division I schools and compared 214 athletes in contact sports to 45 athletes in non-contact sports such as track, crew and Nordic skiing at the beginning and at the end of their seasons. The contact sport athletes wore special helmets that recorded the acceleration speed and other data at the time of any head impact.

The contact sport athletes experienced an average of 469 head impacts during the season. Athletes were not included in the study if they were diagnosed with a concussion during the season.

All of the athletes took tests of thinking and memory skills before and after the season. A total of 45 contact sport athletes and 55 non-contact sport athletes from one of the schools also took an additional set of tests of concentration, working memory and other skills.

"The good news is that overall there were few differences in the test results between the athletes in contact sports and the athletes in non-contact sports," said study author Thomas W. McAllister, MD, of The Geisel School of Medicine at Dartmouth in Lebanon, N.H. "But we did find that a higher percentage of the contact sport athletes had lower scores than would have been predicted after the season on a measure of new learning than the non-contact sport athletes."

A total of 22 percent of the contact sport athletes performed worse than expected on the test of new learning, compared to four percent of the non-contact sport athletes.

McAllister noted that the study did not find differences in test results between the two groups of athletes at the beginning of the season, suggesting that the cumulative head impacts that contact athletes had incurred over many previous seasons did not result in reduced thinking and memory skills in the overall group.

"These results are somewhat reassuring, given the recent heightened concern about the potential negative effects of these sports," he said. "Nevertheless, the findings do suggest that repetitive head impacts may have a negative effect on some athletes."

McAllister said it's possible that some people may be genetically more sensitive to head impacts.

The study was supported by the National Institutes of Health and the National Operating Committee on Standards for Athletic Equipment.


Story Source:

The above story is based on materials provided by American Academy of Neurology (AAN). Note: Materials may be edited for content and length.


Journal Reference:

  1. T. W. McAllister, L. A. Flashman, A. Maerlender, R. M. Greenwald, J. G. Beckwith, T. D. Tosteson, J. J. Crisco, P. G. Brolinson, S. M. Duma, A.- C. Duhaime, M. R. Grove, J. H. Turco. Cognitive effects of one season of head impacts in a cohort of collegiate contact sport athletes. Neurology, 2012; DOI: 10.1212/WNL.0b013e3182582fe7

Cite This Page:

American Academy of Neurology (AAN). "Head impacts in contact sports may reduce learning in college athletes." ScienceDaily. ScienceDaily, 16 May 2012. <www.sciencedaily.com/releases/2012/05/120516173721.htm>.
American Academy of Neurology (AAN). (2012, May 16). Head impacts in contact sports may reduce learning in college athletes. ScienceDaily. Retrieved July 23, 2014 from www.sciencedaily.com/releases/2012/05/120516173721.htm
American Academy of Neurology (AAN). "Head impacts in contact sports may reduce learning in college athletes." ScienceDaily. www.sciencedaily.com/releases/2012/05/120516173721.htm (accessed July 23, 2014).

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