<p>我們家的小孩在學競速溜冰(小學生)，已學好一陣子了，但腰一直無法彎著溜，常常彎一下子就酸了，不知是不是腰沒有力，想要平常在家沒穿溜冰鞋時，給他訓練一下腰力，請問該做什麼樣的動作來訓練彎腰呢?應該不是在家一直練習彎腰吧</p>

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