[問題] 手肘準備發射的90度角
投球的時候,當手抬起來 █ │
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準備發射,手肘的90度角…怎麼去調整、去改
請看這張圖:http://0rz.tw/893yz
手肘抬起來的時候低於90度…往前發射時更誇張
整個手腕和手掌都在腦後…有時還會敲到後腦勺…
有人有過這問題,或是知道怎麼調整(改)的嗎?
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