The Relationship Between Fat Percentage and Muscle Mass with Concentric and Eccentric Endurance of Limb Muscles of Football UKM Members of Hasanuddin University

Abstract: Soccer was including an high-intensity game that lasts for 2x45 minutes in an intermittent manner (Jarkasih and Fardi, 2020) which consists of walking to sprinting activities. Leg muscle endurance is the main and most dominant component in soccer games with a long duration of play (Prayoga et al., 2023). Excess body weight characterized by a high percentage of fat and muscle mass can affect muscular endurance performance. So that researchers are interested in seeing the relationship between the percentage of fat and muscle mass with concentric and eccentric endurance of leg muscles. The purpose of this study was to determine the relationship between the percentage of fat and muscle mass with concentric and eccentric endurance of leg muscles of UKM Football members of Hasanuddin University. This study is a quantitative analytical study with a cross sectional approach and purposive sampling method with 45 samples that met the inclusion criteria, measuring instruments for fat percentage and muscle mass using a karada scan, concentric endurance using the home step test, and eccentric endurance measured using the nordic hamstring performance test. Of the 45 total respondents, the research results were obtained in the form of an average fat percentage of 12.70%, an average muscle mass percentage of 36.94%, concentric endurance of leg muscles using the home step test instrument obtained an average of 113.60%, and eccentric endurance of leg muscles using the Nordic hamstring performance test instrument with an average of 113.60%.36.47⁰. The results of the correlation test between variables using somers'd test showed significance (>0.05) which means that there is no relationship between the percentage of fat and muscle mass with concentric and eccentric endurance of the limb muscles of UKM Football members of Hasanuddin University.