Abstract :
The problem of this research is that the strength of the mawashi geri kick is still not optimal. The athlete's kick looks less powerful so that the opponent is easy to deflect. The purpose of this study was to determine the effect of leg muscle strength training on the ability of mawashi kick to the Karai Dojo athlete Inkai Office of Camat Mandau Kabupaten Bengkalis. The population in this study is the Karate Dojo Athlete Inkai Office of Camat Mandau Kabupaten Bengkalis, amounting to 16 people. The sampling technique used was total sampling so that the number of samples in this study were 16 people. The test instrument used was the pree test and the post test passing and stopping kick of the mawashi geri. The data analysis technique used is the t test. Based on the results of the research that has been done can be drawn a conclusion, namely: there is the effect of leg muscle strength training on the ability to kick mawashi geri Karate Dojo athlete Office of Camat Mandau Kabupaten Bengkalis, with a value with t count = 5.47 greater than ttable = 1.753.