Most conventional coaches wrongly teach their players to
jump up to hit the hit the ball. I say it’s wrong because
there’s a much better way.

I ask my players to hop up to the ball. This is a simple
yet highly effective way of getting them to shift their
weight onto their front foot as they go to hit the ball.

Although at first glance Jumping Up and Hopping Up look
the same, there is a hidden difference. It introduces a vital
rocking motion, which increases both the pace and spin
of your service.

這是訂閱www.DavidKempTennisDKT.com 這網站的電子信的內容
可以請問大家重點是什麼呀，是jump跟hop的差別嗎？
那這兩個差別在哪裡，是指單腳跳跟雙腳跳的差別嗎？
rocking motion指的又是?
感謝大家

一般說起來, jump應該是雙腳起跳的感覺...hop是單腳跳, 同腳著地的感覺......

他說的意思, 似乎是強調要重心先後擺再前擺(rocking motion), 然後由前腳起跳(重心在前腳了), 這樣重心會前移...

不過, 說一般教練都錯,  只有他對, 有點自以為是, 嘩眾取寵就是了......

該問題若單指旋球發球
A.雙腳向上彈起
B.後腳往前腳靠墊步彈起
何者揮拍動作較大.向上的打擊力較大.重心轉移較佳......很值得討論
依個人目前的了解職業選手似乎各半，經與多位教練討論主張也各半

[ 本帖最後由 陳玟君 於 2008-10-29 22:52 編輯 ]