Enhancing Endurance: Comparison between Circuit Training and Interval Training in Young Soccer Players

The problem with this research is that many players still have low endurance. Low endurance will interfere with a player's performance on the field. This research aims to determine the difference in the effect of circuit and interval training on the endurance abilities of soccer players. This type of research is quasi-experimental research with a two-group pretest-posttest Design. The sample in this study was 30 U-18 soccer players. The sample grouping is first carried out before treatment is given to the sample. The sample grouping is determined based on ranking (ordinally matching pairing). The test instrument used is the Yo-Yo Intermittent Recovery Test (YO-YO IR Test). Data analysis in this study used the statistical method of mean difference test (t-test) and before testing the hypothesis, a normality test was first carried out using Lilliefors. From the results of the data analysis that has been carried out, the results obtained are t_count (5.08) > t_table (2.04) which indicates that there is a difference between circuit training and interval training. Meanwhile, the analysis of the average increase in players' endurance showed that the average increase in circuit training data was 2.45 and interval training was 1.77. From these results, it can be concluded that circuit training is more effective than interval training in increasing the endurance of soccer players.