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The study involved college athletes at three Division I schools andcompared 214 athletes in contact sports to 45 athletes innon-contact sports such as track, crew and Nordic skiing at thebeginning and at the end of their seasons. The contact sportathletes wore special helmets that recorded the acceleration speedand other data at the time of any head impact. The contact sport athletes experienced an average of 469 headimpacts during the season. Athletes were not included in the studyif they were diagnosed with a concussion during the season. All of the athletes took tests of thinking and memory skills beforeand after the season. A total of 45 contact sport athletes and 55non-contact sport athletes from one of the schools also took anadditional set of tests of concentration, working memory and otherskills. "The good news is that overall there were few differences inthe test results between the athletes in contact sports and theathletes in non-contact sports," said study author Thomas W.McAllister, MD, of The Geisel School of Medicine at Dartmouth inLebanon, N.H. "But we did find that a higher percentage of thecontact sport athletes had lower scores than would have beenpredicted after the season on a measure of new learning than thenon-contact sport athletes." A total of 22 percent of the contact sport athletes performed worsethan expected on the test of new learning, compared to four percentof the non-contact sport athletes. McAllister noted that the study did not find differences in testresults between the two groups of athletes at the beginning of theseason, suggesting that the cumulative head impacts that contactathletes had incurred over many previous seasons did not result inreduced thinking and memory skills in the overall group. "These results are somewhat reassuring, given the recentheightened concern about the potential negative effects of thesesports," he said. "Nevertheless, the findings do suggestthat repetitive head impacts may have a negative effect on someathletes." McAllister said it's possible that some people may be geneticallymore sensitive to head impacts. The study was supported by the National Institutes of Health andthe National Operating Committee on Standards for AthleticEquipment. I am an expert from led-floodlighting.com, while we provides the quality product, such as Sports Stadium Floodlights , China Outdoor LED Flood Light Bulbs, Solar LED Street Lighting,and more.
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