<![CDATA[ABSTRACTThis study aims at determine the effect of differences in circuit training in the hard media with circuit training in the sand media towards increasing the agility on a football players in regular group of the U-16 Arema FC (Football Club) Academy. The training method to increase agility in this study uses the circuit training exercise method which consists of 10 training posts. The research design in this study uses quasi-experimental methods with the two group pre-test and post-test design approaches. Sample selection and group division using purposive sampling technique. The population in this study were all football players in the U-16 Arema FC (Football Club) Academy consisting of 56 players and obtained a sample of football players in regular group of U-16 Arema FC (Football Club) Academy of 36 research samples, which were then divided into 2 training groups (18 samples in the circuit training groups in hard media and 18 samples in the circuit training groups in sand media). Parameters for measuring agility use the illinois agility run test. The exercise program is carried out for 6 weeks with a frequency of 3 exercises a week. The exercise program is carried out for 6 weeks with a frequency of 3 exercises a week. Data analysis techniques used one way ANOVA and further different tests used Games-Howell test with significance level α = 0.05 and with the help of SPSS version 23 application. The results of this study indicate the circuit training group in hard media increased agility by 1.04 seconds and the circuit training group in sand media increased agility by 1.11 seconds. Difference in difference in increasing agility of the circuit training group in hard media and circuit training group in sand media by 0.07 seconds. The conclusion of this research is that the circuit training group in the sand media significantly and better influence to increase agility compared to the circuit training group in the hard media.]]>
