<![CDATA[This study aims to determine the contribution of arm and leg muscle power to the results of 50-meter breaststroke swimming in male athletes from Siger Sembilan Swimming Lessons. The method used is a quantitative descriptive method with a correlational approach. The research sample consisted of 40 people. The research instruments used included a two-hand medicine ball throw test to measure arm muscle power, a vertical jump test to measure leg muscle power and a 50-meter breaststroke swimming test using a stopwatch. The research hypothesis: 1) there is a contribution of arm muscle power to the 50-meter breaststroke swimming result, 2) there is a contribution of leg muscle power to the 50-meter breaststroke swimming result, 3) there is a contribution of arm and leg muscle power to the 50-meter breaststroke swimming result. The research results showed that: 1) there is a significant contribution of arm muscle power to the 50m breaststroke swimming (calculated r = 0.343 > table r = 0.320) with a contribution of 11.81%, 2) there is a significant contribution of leg muscle power to the 50m breaststroke swimming (calculated r = 0.556 > table r = 0.320) with a contribution of 30.94%, 3) Simultaneously, the contribution of arm muscle power and leg muscle power to the 50m breaststroke swimming (calculated r = 0.508 > table r = 0.320) with a contribution of 25.48%.]]>
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