Kontribusi Kekuatan Otot Lengan Terhadap Hasil Servis Bawah Bolavoli di SMP Negeri 2 Rambah Samo Kabupaten Rokan Hulu
This research stemmed from a few issues that were found in the field, researchers have done in junior high Country 2 Rambah Samo Rokan Huluat the time of service , the initial attitude stands already seen errors stand out, a walk to a point so that it does not move freely in doing Services down. The attitude of the Agency is not ducking when performing Services under so that students look stiff. Sometimes the ball too high dilambung at the time of service , so contact perkenaan hands with the ball less precisely. Pandangan towards the ball is not balanced with swing arm hand against the ball so that the ball can't. routed as expected. On the attitude of perkenaan, there is still an error i.e., students have not been able to optimally adjust the precision hand while touching the ball. Then at the end in an attitude of service , there are no students back in the initial position after performing service under. The purpose of this research is to know the contribution of muscle strength of the arm against the capabilities of the services under the State Junior High School students volleyball 2 Rambah Samo Rokan Hulu. This type of research is a correlation. All of the population taken as samples, this technique is referred to as total sampling. So populations and samples in this research is grade VIII SMP Negeri 2 Rambah Samo Rokan Hulu as many as 40 people. Data collection was carried out with test push-up test and servicing under volleyball.Based on the results of the processing of data obtained rcountof 84.03 whereas rtable on a significant level of 5% is 0304, from these data, then such descriptions can be drawn the assumption that rcount≥ rtableor 84.03 ≥ 0304. Thus it can be concluded that there is a contribution of 7.06% and there is significant between the muscle strength of the arm against the results of the services under State Volleyball JUNIOR HIGH students 2 Rambah Samo Rokan Hulu.