<![CDATA[This study aims to determine the relationship between arm muscle strength and underhand serve ability in volleyball among eighth-grade students at MTs Negeri 6 Kuningan. The research method used was a correlational method with a sample size of 46 students. The research instruments included a push-up test to measure arm muscle strength and a volleyball underhand serve skill test to measure basic technical skills. Data analysis used the Pearson Product Moment correlation test with a significance level of 5%. The results showed a correlation coefficient of r = 0.413 with p = 0.004 (<0.05) and t = 3.01 > t = 2.015. This proves that there is a significant positive relationship between arm muscle strength and volleyball underhand serve ability in eighth-grade students at MTs Negeri 6 Kuningan. The level of relationship is in the moderate category, so it can be concluded that better arm muscle strength, better students' volleyball underhand serve ability.]]>
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