The effect of variability knee tuck jump training and box jump training on the explosive capabilities of legs muscles

Abstract

The problem in this research is the low jumping ability of male volleyball athletes which effect on the decreased performance. The aim of this research is to know the effect of knee tuck training and box jump training on the explosive capability of the legs muscles of volleyball athletes. The type of the research is quasi-experiment with the research population is all male volleyball athletes at SMK 1 Solok Selatan which totally 24 athletes aged 17 years. The technique of sampling which is used is total sampling with a sample is 24 athlete. The instrument in this research is to use Vertical Jump to measure the explosive power of leg muscles. Before giving a treatment, an initial test (pte-test) is carried out to see the explosive power of leg muscles. The testees used as a samples are drawn into two groups. The group 1 is given the Knee Tuck Jump training treatment and the group 2 is given Box Jump Training treatment. This treatment is given 16 times (8 weeks), then the final test will be given. The data analysis technique which is used to test the hypothesis is t analysis at the significance level of 5%. Based on the data analysis in this study, 1) the Knee Tuck Jump get an average increase of (7.703) and was marked by getting t count (10.631)> t table(1.796). It means that the application of Knee Tuck Jump can increase the explosive power capability of leg muscles, 2) the Box Jump training get an average increase (2.456) and was marked by getting t count (9.240)> t table (1.769), it means that the application of the Box Jump training can increase the explosive power of leg muscles, 3) there was an influence training. Where in Knee Tuck Jump is getting the average increase is (7.703) while the box jump training is (2.456) and is indicated by getting t count (2.05)>t table (1.796). It means that the application of Knee Tuck Jump training and Box jump training could increase the explosive power capability of the leg muscles, where the Knee Tuck Jump training shows better results in increasing the explosive power of the leg muscles. Coaches apply knee tuck jump training at the right age level to achieve maximum results according to the athlete's training capacity.