Abstract
The purpose of this study was to determine the effect of 8 weeks of training with resistance bands on the leg power of taekwondo athletes. This type of research is an experiment. The sample used was taekwondo athletes totalling 27 athletes with an age range of 14-17 years. The leg power test instrument uses a vertical jump. Data analysis techniques include descriptive analysis, prerequisite tests (normality and homogeneity tests), and hypothesis testing using paired sample tests. Analysis using the help of SPSS 23 software. The results showed that eight weeks of training with resistance bands was significant for increasing the leg power of taekwondo athletes. The increase in leg power of taekwondo athletes after being given eight weeks of training with resistance bands was 3.31%. For further research, it is hoped to further expand the scope of the study by examining other factors that influence increasing leg muscle power, as well as developing the research sample.