Syaputra, BudiEko2013-06-052013-06-052013-06-05http://repository.unri.ac.id:80/handle/123456789/3604Kontribusi Kelentukan Otot Punggung Dengan Akurasi SMASH Tim Bola Voli Putra Kecamatan Retehkabupaten Indragiri HilirType of this research constitute correlational research that aims to determine whether there contribution flexibility back muscles with accuracy smash a ball team men's volleyball kecamatan Reteh kab.indragiri downstream "data is this study were collected through measurement back muscles with accuracy smash a ball team men's volleyball Kecamatan Reteh Regency of Indragiri Hilir , jumblah sample on this research is the 12 person of team ball men's volleyball kecamatan Reteh kab.Indragiri downstreamInstrument who conducted in this research is the tests of sit ond reach and accuracy smash. Then data is processed with statistics, to test for normality with test of Liliefors at significant level α 0,05, hypothesis which filed is the contribution of sit reach with accuracy smash Based on research results who conducted, then it can be be concluded that the pliability muscles backs has a contribution which is significant with the accuracy smash, wherein is obtained thitung 5,61 ttabel 1.812, so thitung> ttable consequently Ho is rejected Ha is received and from the results of calculation of correlation product moment between spasticity back muscles with accuracy of smash is obtained rxyhitung 0,87en-USBack muscle flexibility and accuracy smashstudent Paper Post Degree