棒球 快速球 - 健身
By Eartha
at 2006-03-07T00:00
at 2006-03-07T00:00
Table of Contents
請問一下有名師能給我指點一下ㄇ?<有棒球教練或投手之類ㄉ最好>我很喜歡打棒球而且我ㄉ臂力很大但是每次去打擊場測ㄉ都沒預期的快而且那測速器為什麼有時候沒出力比我出全力時所測到ㄉ球速要快?啥原因啊能不能教要怎麼才能投出速球?正確ㄉ姿勢為何ㄋ?
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健身
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