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Cross-dominance : ウィキペディア英語版
Cross-dominance
Cross-dominance, also known as mixed-handedness, mixed dominance, or increased hand efficiency, is a motor skill manifestation where a person favors one hand for some tasks and the other hand for others. For example, a cross-dominant person might write with the left hand but throw mainly with the right one.〔http://www.rightleftrightwrong.com/what.html〕
It can also refer to mixed laterality, which refers to a person favoring eyes, ears, feet, or hands on one side of the body. A person who is cross-dominant can also be stronger on the opposite side of the body that they favor; for example, a right-handed person can be stronger on the left side. Cross-dominance can often be a problem when shooting or in activities that require aim, although athletes can still achieve success in sports that require accuracy, like passing in American football and shooting in basketball.
== In baseball ==

A left-handed batter is about two steps closer to first base than a right-handed batter, one important advantage.〔 Because curveballs and sliders – the most commonly used breaking pitches in the game – curve in the direction of a pitcher's non-throwing hand, a batter who bats opposite the pitcher's throwing hand enjoys an advantage. Since most pitchers are right-handed, left-handed batters enjoy a second advantage over their right-handed counterparts.〔(The advantage of batting left handed )〕 However, right-handed throwing is more valuable in the field. Every fielding position can be played by a right-handed thrower, although left-handers have a slight advantage at first base owing to the fact that they do not have to turn around to place their foot on first when stretching to catch a throw. Conversely, left-handed throwers are almost completely absent at the highest level at the other infield positions and at catcher.〔(A History of Left-Handed Infielders )〕 Switch hitting exists so a batter can hit from the side opposite every pitcher's throwing arm, but it has gained some criticism because a batter will always be more dominant from one side of the plate than the other; the switch hitter may be less reliable from one side. So, many baseball players are trained to be simply cross-dominant, batting solely left-handed and throwing solely right-handed.〔(Article on the advantage of cross-dominance in baseball, including statistics. )〕 There are a few players, such as Rickey Henderson, who bat right and throw left; but this serves as a substantial disadvantage. Rickey Henderson only did that because he was taught to bat right-handed by right-handed teammates.〔(Bats: Right Throws: Left )〕

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Cross-dominance」の詳細全文を読む



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