Penalty kick is the special play which influences a result of the game in the football. A goalkeeper should react to the ball instantaneously at the penalty kick, we estimated that the state of the reaction is different in a trained football player and an inexperienced person. Therefore, we got a hypothesis from which a cerebral reaction may be different by the trained football player and an inexperienced person. To inspect this hypothesis, we measured prefrontal activity of the trained and inexperienced subjects when they watch the video of penalty kick, using MRS. As the result of the experiment, we found that specific region of prefrontal area reacts strongly in a trained football player. Therefore, we suggest that prefrontal activity will be an index for state of training in the football.
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