In static balance, head extension has an obvious disturbing effect on the vestibular organ, but in dynamic balance, it has a weaker disturbing effect.

静态平衡时，头后仰对前庭器官的干扰效果较为明显，但动态时干扰效果明显较弱。

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Wilson, who studies the on- and off-field happenings of baseball as closely as anyone, explained that every player has a magic number in his head for what it will take to sign an extension, and if his club hits it, he signs.

WSJ: Baseball Free Agency Dies of Neglect -- Matt Cain, Joey Votto, Andrew McCutchen, Matt Kemp Opt for Long-Term Deals

Meanwhile assistant head coach Andy Hay has signed a one-year extension with the Tigers.

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It was reported this week that the University of Texas regents will deliberate offering head football coach Mack Brown a four-year contract extension.

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