科學(xué)60秒:足球運動員的"隱形殺手"
Doctors later found that Duerson had a condition in common with more than 20 other dead football players in the U.S.: Chronic Traumatic Encephalopathy or CTE, a degenerative disease linked to [--1--], depression and dementia. And Duerson thought he had it. Which is why he took great care to leave his brain [--2--] for study.
And concerns have been growing that the concussions and other [--3--] that are common in the NFL might be to blame.
Last week the Canadian Sports Concussion Project announced the results from brain autopsies of four CFL football players. Bobby Kuntz, a former Toronto Argonaut and Jay Roberts, who played for the Ottawa Roughriders, showed classic signs of CTE. But Peter Ribbons, a Winnipeg Blue Bomber, and Tony Proudfoot, from the Montreal Alloettes, showed no signs. All four played when it was common to [--4--] with head-first tackles.
The Canadian Project seeks more brain donations from former contact sport athletes. To try to find out why some seem able to avoid CTE, while others [--5--] are not.
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