Physical capacity and performance correlation in sub-elite Indonesian archery athletes

The aim of this research is to analyse the physical components that can support the proper archery performance of young Indonesian athletes. This research employed a quantitative descriptive design involving 18 athletes from the East Java and West Java Archery Training Centre as the research subjects. Each athlete carried out a physical test consisting of 9 physical test items (1' incline sit up, Bosy Right, Bosy Left, MFT, Hover, Superman Back Hold, Pinch Grip, standing balance test, standing archery hold), which the trainer has prepared according to the needs of archery. After that, archery performance assessment was done using the recurve division's individual qualification system, i.e., arrow athletes performed 72 arrow shots. The data were then analysed using descriptive tests, silhouette method tests, and K-means clustering analysis to classify physical components and simplify the data collection process. These processes increased the accuracy of changes needed in the training process to improve athlete performance. A correlation test was also conducted using a Spearman's rho with a significance p<0.05. The study's results revealed that the silhouette method divided the variables into six clusters. The K-means cluster analysis results showed that exercises focused more on the arms, while trunk and lower extremity exercises received less attention. The research also found two physical aspects that had a positive and significant correlation with archery performance, namely, left pinch grip and right pinch grip. In addition, this research showed that the archers’ physical aspects of pinch grip strength (left and right) were closely related to performance achievements or scores in archery. Keywords: Physical capacity, sub-elite athletes, archery, archery performance.