[請益] 肩膀力量
大家晚安!
想請問各位有什麼簡單的訓練方式能增強投擲棒球時的肩膀力量?
是像彈力繩之類的嗎?
還請各位專家幫忙解惑~~~
站內信也可!!!
感謝~~
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※ 編輯: jaslinjas (1.175.127.82), 07/23/2014 01:21:25
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