Effects of Daily Added Coenzyme Q10 on Certain Haematological and Biochemical Parameters in Elite Endurance Skiing Athletes

The present study aims to examine the effects of orally administered coenzyme Q10 (CoQ10) supplement on certain haematological and biochemical parameters in regularly exercising elite endurance athletes. The study subjects were divided into three groups, namely the control group (n = 5) and two subject groups taking 100 mg (n = 5) and 200 mg (n = 5) CoQ10. The blood samples thus collected were utilized for the measurement of certain haematological and biochemical parameters and CoQ10 levels. In the present study, regular exercise and administration of 100 mg and 200 mg of CoQ10 led to an increase in MCV, MCHC and HGB levels (p<0.05 and p<0.01, respectively) and a decrease in WBC. In addition, significant increases were identified in the AST and ALT levels of the control group when compared to the trial groups (p<0.01), while an increase was also observed in glucose and Creatin in the group taking 200 mg of CoQ10 (p<0.05). When the preand post-exercise results in CoQ10 levels were compared, increases were determined in the CoQ10 levels of trial groups using 100 mg and 200 mg of CoQ10 (p<0.05 and p<0.01, respectively). Consequently, certain haematological and biochemical parameters are considered to potentially increase or decrease as a result of a physical exercise-related enhancement in metabolic activity, in oxygen consumption and thus, in the formation of reactive oxygen species. Therefore, the administration of CoQ10 can be argued to be effective on blood parameters and to support the antioxidant defence system.