Nascar currently does not use any baseline testing, although Earnhardt must be cleared by a neurosurgeon before he can race again.
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Schools are trying to get ahead of the problem by implementing baseline testing to measure cognitive ability before and after an injury.
The NFL implemented baseline testing for its players last year.
The NFL implemented preseason baseline concussion testing that players must meet if they suffer a head injury during the season.
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The initial group of 1, 000 will participate in a series of baseline studies including cardiac function, testing for joint abnormalities and psychosocial tests.
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