Hubungan Kekuatan Otot Lengan dan Bahu dan Kelentukan Punggung terhadap Kemampuan Servis Atas Ekstrakurikuler Bola Voli Putra SMP Negeri 27 Pekanbaru

The problem with this research is still a lack of ability back up in a vollyball game the students of smp negeri 27 pekanbaru, this is beceause the flexibility the back is less than the maximum. To boost and create the service for in the in a volleyball game, then take a few element of it is a technique,flexibility,strength, so it could affeect the ability to serve on the vollyball. Research this a correlation the aim to know the relationship between variabeles and are tied. After that, the data normality test with Liliefors test with significance level α = 0.05, and gained normality test results X1, Lomax (0.205) <Ltabel(0,242) and X2 Lomax (0.144) <Ltabel (0,242) test normality variable Y, Lomax (0.204) <Ltabel (0,242) in other words the normal distribution of data. Then proceed to determine r by using product moment correlation analysis, , if rhitung