Hubungan Power Otot Tungkai Dengan Hasil Lompat Jauh Gaya Jongkok Siswa Putra…

The problem in this study is based on observations by the author of the male students of grade X SMAN 12 Pekanbaru seen that there are still many students who obtain low yields in the sport long jump is caused by muscle power leg students who have not maximized so that repulsion leg students when resting does not produce a strong boost in the jump. Apart from the power of leg muscle, leg m…