Circuit Body Weight Training for Karate Athletes (Kumite - Under 21 Years): How is the Effect and Correlation on Weight Loss and Kizami - Gyaku Zuki?

The aim of this study was to analyze the effect of circuit body weight training on weight loss and Kizami - Gyaku Zuki's punching skills. The sample of 21 karate athletes aged 17 – 20 years consisted of men: -60 kg, -67 kg, -75 kg, -84 kg, height 167 – 178 cm; and women: -50 kg, -55 kg, -61 kg, height 162 – 170 cm. The body weights in this study were adjusted to the 2024 World Karate Federation (WKF) regulations. However, not all samples could fill all weight classes according to the WKF regulations. The training program is carried out for 4 weeks or 12 meetings, with 3 meetings in one week. This exercise is carried out with an intensity of 50 – 70%, number of sets 3 – 5 sets, number of repetitions 14 – 18 times, recovery between posts is 20 seconds, recovery between sets 120 – 180 seconds. The results of this research are that circuit body weight training has an effect on weight loss and kizami - gyaku zuki punches (sig. 0.000 < 0.05). Then the product moment correlation shows a strong relationship, with a sig value. 0.017 (r = -626) means that the more the athlete's weight increases, the kizami – gyaku zuki punching skill decreases. Variables in body weight and kizami - gyaku zuki skills are very important for a fighting athlete, especially kumite, to be able to compete in the specified class. This research can be recommended for athletes who have a short general preparation period, because this program is only carried out for 4 weeks with 3 meetings in one week.