Hubungan Kekuatan Otot Lengan-Bahu Dan Kelentukan Punggung Dengan Servis Atas…

This research aims to determine whether there is a corelation of the shoulder musce strength and the back muscle with the servis of volley ball in the team of azzuhra pekanbaru. The form of this research is correlation research, the population in this study is azzuhra Pekanbaru new junior high school students. The sample in this study were 17 people. The sample technique used is total sampling …