<![CDATA[Sleep quality is considered one of the essential factors influencing athletes' physical recovery and performance; however, evidence regarding its relationship with peak performance in adolescent female football players remains inconsistent. Therefore, this study aimed to examine the relationship between sleep quality and peak performance among female football athletes aged 15–18 years at Srikandi Mojopahit FC Mojokerto. This study employed a quantitative, non-experimental correlational design. The population consisted of all female athletes in the club, with a total of 30 participants selected using a total sampling technique. Sleep quality was assessed using the Pittsburgh Sleep Quality Index (PSQI), while peak performance was measured using the Peak Performance Questionnaire. Data were analyzed using descriptive statistics and Spearman's Rank correlation test with IBM SPSS Statistics version 26. The findings revealed a correlation coefficient of 0.022 with a significance value of 0.908 (p > 0.05), indicating a very weak positive relationship that was not statistically significant between sleep quality and peak performance. These results suggest that sleep quality alone does not significantly influence athletes' peak performance in this sample. Peak performance is likely affected by multiple interacting factors, including technical and tactical skills, physical fitness, psychological readiness, and competitive experience. This study contributes to the understanding of factors associated with athletic performance and highlights the importance of adopting a multidimensional approach in athlete development and performance enhancement.]]>
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