In this study for young wrestlers, we aimed to examine the effects of an intensive wrestling training program on blood parameters and serum leptin values. METHODS: The wrestlers trained 6 days a week for one and half hours. The diet was prepared according to the conditions of this training program. Blood collection was made when wrestler first entered the wrestling educational center on October 2011, and a second blood collection was made 8 months later in June 2011. In this 8 month period, athletes participated in competitions as wrestlers. Analysis of the data using SPSS statistical program in Windows, and the t-test was applied. RESULT: The wrestlers were found to have a mean age of 12.40 years at the pre-test, a mean height of 1.50 m and a mean body weight of 44.44 kg. During the second measurement period, the average height was 1.57 m and a mean body weight of 50.56 kg. The wrestler`s increases in height and weight were significant (p <.001). A decrease was observed in the value of HDL-C, along with an increase in triglycerides, and both were statistically significant (p <0.05). Glucose values decreased, and creatinine and uric acid levels increased. These changes were statistically significant (p <0.001). The decrease in insulin values was statistically significant (p <0.05). Alkaline phosphatase and calcium levels were decreased significantly (p <0.001). Hematocrit values was found to decrease significantly (p <0.001). The decrease in the leptin hormone was statistically insignificant (p> 0.05). CONCLUSION: Some results of the intensive training program that were observed are opposite of what would be expected for HDL, triglycerides, creatinine, and uric acid. An inappropriate implementation of intensive training at this age of wrestlers, which included competition weight loss, irregular eating habits, has produced the unexpected in blood values. In this study, we have identified some negative aspects of intensive training on children's growth and development.
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