Pinus koraiensis leaf (PKL) extract exerts antihyperlipidemic, antidiabetic, and anticancer effects; however, its anti-fatigue properties have not been elucidated to date. In this study, the anti-fatigue properties of PKL were evaluated by assessing the endurance of mice by a weight-loaded forced swimming (WLFS) and rotarod (RR) tests. Subsequently, various behavioral, biochemical, and physiological parameters were measured. Treatment with PKL decreased hepatic and muscular glycogen levels in mice subjected to WLFS and RR test compared to those in acute exercise-treated (AET) mice. Additionally, plasma levels of stress-related biochemical factors (lactate, lactate dehydrogenase, aminotransferase, aspartate aminotransferase, and blood urea nitrogen) decreased significantly (P
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