[請益] 請大家看看我的投球動作
這是在大新莊拍的
球速大概在 88~97公里 而已
我個人是覺得沒什麼用到腰力
對這個問題已經困擾很久了
但是一直無法抓到"靠腰"的感覺 ...
另外揮臂似乎也不夠快
是不是需要甩毛巾 @@
請各位大大幫我看看有什麼地方可以改進的
謝謝!!!
差一點忘了附上影片連結 XD
http://tw.youtube.com/watch?v=95goS-wsatE
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