Hubungan Kekuatan Otot Lengan Dan Bahu Dengan Hasil Tolak Peluru Gaya Ortodok…

this type of research is a correlational study by looking at muscle strength in the arms and shoulders shot put results of orthodox style. The population in this study were students of class X SMKN Pertanian District of Batang Gansal Indragiri Hulu registered as students in the academic year 2014-2015. Based on preliminary studies of samples taken enrolled as many as 28 boys. Data collection to…