Kontribusi Daya Ledak Otot Lengan Dan Bahu Dengan Kemampuan Servis Bawah Perm…

The problem in this study was less maximal of under serviced ability. It is suspected because of the low explosive power muscle arms and shoulder. This study was conducted to determine whether there is a contribution among explosive power arms and shoulders with the under serviced ability in volleyball game at SMP N 9 Pekanbaru team. The sample in this study was Volleyball Team of SMPN 9 Pe…