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This study aims to examine the effects of Effect of coenzyme Q10 on muscular damage indicators and VO2max test in the students registered in track and field course. Materials and Methods: The study population was composed of (20) students. The blood samples thus collected were utilized for the measurement of students, Lactic Acid، Glutamy I Tran peptidase ،CoQ10, lactate dehydrogenase (LDH), creatine phosphokinase (CPK), and Vo2max tests (Harfard, cooper, ergometer) pre- and post-eating supplemental and practice exercise (3000 m) running. Results: Significant decreases were identified in the Lactic Acid، Glutamy I Transpeptidase, lactate dehydrogenase (LDH), creatine phosphokinase (CPK), in the trial group when their pre- and post-exercise results were compared (α<0,05) while an increase of (α<0,05) was observed in their plasma CoQ10 levels. However, Vo2max levels of the trial group students using 100 mg CoQ10 were observed to increase when compared to the results of the control group athletes Conclusion: physical performance depending on the usage of CoQ10 while it decreases the accumulation of La and thus delays fatigue and increase Vo2max. (Published abstract)