Aim: The aim of the study was to investigate the high-altitude and sea-level blood parametersof elite athletes living in high altitude permanently and to contribute to the literature by discussing the findings in the light of present knowledge. Material and Method: The sample included 16 people who participated voluntarily, 8 of them were elite athletes in the province of Agri, and rest of them was randomly selected sedentary from the same age group. Results: Results of the study can be summarized as in terms of the catalase values of athletes no significant difference has been observed. In terms of the catalase values of athletes and sedentaries, there was a statistically significant difference between the valuesof athletes before exercise at high altitude and the values of sedentaries at high altitude (p<0.05). In terms of carbonic anhydrase values of athletes, there was no statistically significant difference between the values before exercise at high altitude and the values after exercise at sea-level. On the other hand there were statistically significant differences for all other comparisons. In terms of peroxidase values of the athletes, a statistically differencewas observed between the values of before and after exercise at high altitude. Conclusion: As a result of the study it can be said that exercise raises the values of catalase levels of athletes were lower than sedentaries, and finally exercise raises the catalase level in blood or tissuesboth at high altitude and at sea-level.
