The Effect of Plyometric Double Leg Speed Hop Exercise on Explosive Muscle of Volleyball Players

This study aims to determine the effect of double leg speed hop plyometric exercises on leg muscle explosive power of volleyball players.The research method used is the preexperiment design by conducting an initial test, 18 meetings for the treatments and a final test.The sample in this study were 12 volleyball players in Banjarbaru, chosen by using saturated sampling techniques.The results showed that the pretest data of leg muscle explosive power obtained an average = 55.75 cm with a standard deviation = 8.614.In the posttest result, the leg muscle explosive power obtained an average = 59.67 with a standard deviation = 8.988.The analysis results obtained tcount = 15.07>ttable = 2.201, with Sig.(2-tailed) = 0,000; it turns out that Sig.(2tailed) <0.05; thus the tcount is significant.The conclusion is that there is an effect of double leg speed hop plyometric training on leg muscle explosive power of volleyball players.