<![CDATA[Physical fitness plays a pivotal role in supporting athletic performance, particularly in high-intensity sports such as Tarung Derajat, which demands a combination of strength, speed, and endurance. This study aimed to evaluate the aerobic capacity of Tarung Derajat athletes from Satlat Siginjai by estimating their VO₂MAX using the indirect method of the 20-meter Shuttle Run Test (Beep Test). To enhance accuracy and efficiency, VO₂MAX values were calculated using an online calculator provided by the Topend Sports website. The research employed a quantitative descriptive approach involving 15 active members who met the inclusion criteria. Results indicated that the majority of participants fell into the "Fair" (46.7%) and "Poor" (13.3%) categories, while only 33.3% were classified as "Excellent" and 6.7% as "Good". These findings highlight a notable disparity in aerobic capacity among athletes. Consequently, training programs should prioritize the development of cardiovascular endurance through structured, evidence-based interventions. Regular fitness evaluations using validated instruments such as the Beep Test should be integrated into long-term training strategies to monitor progress and adjust training loads based on individual physiological needs.]]>
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