<![CDATA[ABSTRACT : Based the results of observations conducted by researchers in the field at extracurricular activities, the researchers found that the problem is still the lack of explosive power (power) limb muscle on extracurricular activities of students who take the long jump. Based on the existing problems, the researchers aim to provide a form of exercise that can increase power and administration Exercise intensive program. In this study the authors only focus on one form of exercise that exercises power drill speed single leg hop for this exercise has never been applied to students' extracurricular SMP 6 Siak Hulu.This study used an experimental method, in order to determine the effect of exercise. Thus the experimental research method can be interpreted as the research methods used to find a specific treatment effect against the other in uncontrolled conditions. The first step taken is to Pree-test is a test to measure the long jump long jump before trained its power. Subsequently the samples were treated namely practice speed single leg hops. Then do the final test is the post-test with the long jump test, to see if there is increased after a given treatment.Data were analyzed descriptively, then further testing research hypotheses have been proposed to fit the problem is: there is influence of plyometrics exercises single leg hop speed significantly to the results of long jump squat style. Based on t test analysis produces Tcount of 9.12 and Ttable of 1.83. Means that Tcount> Ttable. It can be concluded that H0 rejected Ha accepted. So it can be summed up as follows: there is a single leg exercise speed influence on the results of the long jump hop style squat extracurricular SMP 6 Siak Hulu.Keyword : Exercise single leg speed hop, power]]>
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