Skripsi
Efforts to improve leg muscle power using plyometric training method with circuit training model / Ahmad Abdi Kurniawan
Abstrak
The researcher has the main objective of knowing the effectiveness of the Plyometric training method with the circuit training model in increasing the leg muscle power of volleyball players in the Train to Train phase aged 12-16 years at the Active Movement Volleyball School Volleyball Club. One Group Pretest-posttest is a design used by researchers with a quantitative descriptive approach where pre-experimental design is the type of research. The population in this study were volleyball players at the Active Movement Volleyball School. Because there are criteria for the samples to be collected Purposive Sampling is a technique to meet the criteria so that the athletes obtained are 27 male and female players aged 12-16 years. The instrument uses a vertical jump measurement test with the Jump MD tool to understand the power ability of the leg muscles. The mean pretest result is 50.33 with a standard deviation of 11.87 and the mean posttest is 54.52 with a standard deviation of 12.07. In the prerequisite test there is a normality test using the Shapiro-Wilk technique and it is known that the vertical jump test data is 0.214 pretest and 0.067 posttest gt 0.05. For the homogeneity test using the Levene statistic the vertical jump result data has a homogeneous variant with a pretest-posttest significance value of 0.742 gt 0.05. The next stage is to test the data using the paired sample t-test technique which is commonly called a hypothesis test and the results of the vertical jump test get a value of 0.000