Concussions are a major problem in football.
But brain injury is a growing concern in soccer, too, usually resulting from heading the ball or collisions.
A meta-analysis of existing studies finds that concussions accounted for between 6 and 9 percent of all injuries sustained on soccer fields.
Most of those concussions come from when two players make for the ball, often when a player's elbow, arm or hand inadvertently makes contact with another player's head.
But we're not just talking about injuries to professionals.
One work shows some 63 percent of all varsity soccer players have sustained concussions—yet only 19 percent realized it.
有项研究显示的是所有足球代表队的运动员中大约有63% 的人持续忍受脑震荡威胁—然而只有19%的人意识到了这一点 。
And another says girls' soccer can be particularly brutal, accounting for 8 percent of all sports-related concussions among high school girls.
The findings are in the journal Brain Injury.
Professional players who reported a great deal of extensive heading the ball during their careers did the poorest in tests of verbal and visual memory compared with other players.
Goalies and defenders were most likely to get concussions.
So if you want to bend it like Beckham, maybe focus on playing midfield or offense.
Padding the goal posts would also be a heads-up policy.
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This is one result from a set of broad changes in global production that I have called the new industrial revolution.
Two forms of hopelessness can result from captivity.
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3.contact with 接触,联系
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4.focus on 集中
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The project also will focus on key secreted pathogenic proteins.