Pengaruh Latihan Circuit Training Terhadap Aerobik Sistem Dan Stamina Pada Pemain Sepakbola Usia 13

Abstract
This study was motivated by the results of match observations where the players experienced a decrease in concentration levels and the quality of playing techniques that affect the outcome of the match. The purpose of this study is to find out the effect of circuit training exercises on improving the aerobic system, the influence of training circuit training exercises on the increase in stamina and the effectiveness of training circuit training on the improvement of aerobic system versus increase in stamina. The study used the Quantitative Approach experiment "One group Pre test Post Test Design" with the research subjects of 13-year-old SSB Jeli Putra players with 13 players. The study used circuit training methods as a treatment and used two testing instruments: the bleep test for aerobic measurements and the 1600-meter running test for stamina measurements. The results of this study are: (1) circuit training exercises affect the aerobics system, (2) training circuit training exercises affect stamina, and (3) Training circuit training exercises are effective to improve the aerobic system and stamina of SSB Jellies 13-year-old soccer athletes.