<![CDATA[This study aimed to determine the relationship between arm muscle strength and wrist flexibility and the overhand service ability of volleyball athletes at Universitas Negeri Padang (UNP). A quantitative correlational research design was employed. The population consisted of 20 UNP volleyball athletes, with 17 athletes selected as the sample using purposive sampling. Arm muscle strength was measured using a one-minute push-up test, wrist flexibility was assessed with a goniometer, and overhand service ability was evaluated through six service attempts. Data were analyzed using the Pearson Product-Moment correlation and multiple correlation tests with SPSS version 32.0 at a significance level of 0.05. The results revealed that arm muscle strength (r = 0.966; p < 0.05) and wrist flexibility (r = 0.944; p < 0.05) each had a very strong relationship with overhand service ability. Moreover, both variables jointly demonstrated a very strong relationship with overhand service performance.]]>
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