Effect of skipping and box jump exercises on leg muscle explosiveness: badminton amateur athletes

The explosive power of the leg muscles is a component that must be possessed by athletes, both professional and amateur, in sports, especially badminton. This study aims to find out: 1) the effect of skipping exercises on the explosiveness of leg muscles in extracurricular students, 2) the effect of box jump exercises on the explosiveness of leg muscles in extracurricular students, and 3) the difference between skipping and box jump exercises on the explosiveness of leg muscles in badminton extracurricular students of Liwa 2 Lampung Junior High School. The research method used was an experimental method, with a pre-test and post-test research design, a sample of 24 students who were divided into two experimental groups with ordinal pairing techniques. The instruments used are tests and measurements using vertical jumps. The results showed that: 1) There was a significant effect on skipping exercises on the explosiveness of leg muscles with data analysis of tcount = 18.019 > ttable = 2.228 with α = 0.05. 2) There was a significant effect on box jump training on the explosiveness of leg muscles with data analysis of tcount = 11.790 > ttable = 2.228 with α = 0.05. 3) There is a difference between skipping exercises and box jump exercises on the explosive power of leg muscles with data analysis tcount 2.204> ttable 2.074 with α = 0.05, N = 24. Judging from the average final test, skipping practice was 44.50 while box jump practice was 39.75. So it can be concluded that the two exercises have a significant impact, but it is recorded that skipping exercises provide more optimal results compared to box jump exercises in supporting the quality of leg muscle explosiveness.