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The main propose of the present research was to study of age-related metabolism characteristics in case tendency to age-onset reducing of the systematic physical exercises and quicker sports success achievement. Was provided the metabolic state markers analysis of adolescent athletes via traditional laboratory tests is required. In an experiment we have took male (701) and female (363) youth people including 576 athletes and 125 members control for male and 320 athletes and 43 in a control for female. The authors have made a non-personalized database including age, gender, body mass index, sports qualifications, and 24 biochemical markers of blood serum was created. We havefound in athletes aged 12-15 body mass index, aspartate aminotransferase activity, glucose/low-density lipoprotein ratio elevation and total iron-binding activity serum decrease in athletes of both sexes; increase in urea and triglycerides, alpha-amylase activity and decrease in calcium, albumin/globulin ratio in male athletes; decreased activity of alkaline phosphatase in female athletes. In 16-18 year age group some changes also were observed: opposing changes in the content of low-density lipoproteins, the activity of aspartate aminotransferase and glucose/low-density lipoprotein ratio in athletes of both sexes; increase in urea, creatinine and atherogenic index values in male athletes; a decrease in the alanine aminotransferase, alkaline phosphatase, creatine phosphokinase activity and the coefficient of creatine phosphokinase/aspartate aminotransferase ratio in males athletes; total bilirubin, glucose/indicators decrease in female athletes. Identified changes in biochemical markers seemed to detect metabolic disorders in the body of athletes during puberty.