Abstract:
The goal of this research is to evaluate the factors that influence the performance of Taekwondo athletes, specifically focusing on physical training factors. There are several physical components that affect athlete performance, including flexibility using the V sit and reach test, flexibility of the shoulder and wrist, abdominal muscle endurance, arm muscle endurance, arm muscle explosive power, explosive power of the right leg muscles, explosive power of the left leg muscles, speed, core test, and aerobic endurance (VO2max). This research will use Principal Component Analysis (PCA). The sample consists of 16 Taekwondo athletes from North Sumatra. The results of the Bartlett's test using RStudio indicate that there are several physical training factors that significantly influence the performance of Taekwondo athletes in North Sumatra, namely flexibility (V sit and reach), shoulder and wrist flexibility, abdominal muscle endurance, and leg muscle endurance. Based on the PCA analysis conducted through RStudio, each component has its own variance, with a total variance of 0.8 or 80% for the four components.
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