Hubungan Power Otot Lengan Dan Bahu Dengan Ketepatan Servis Atas Permainan Bo…

The problem in this study is based on observations of ball blow when the ball service is often out of the field and sometimes stuck on the net or hit on the bet. This means that the top players performed by the players are not on target, or the service accuracy of them is still low. At the top serve is an initial attack that can generate points or points in winning in a game. ideally a strong a…