RESUMEN
Physical training seems to reduce exercise-induced oxidative stress and to increase the antioxidant defense system. However intense physical aerobic and anaerobic training can induce an increase of oxidative stress which can be implicated with overt raining. Was to study the effect of physical training on oxidative stress parameters in a sample of students of the second year of the faculty of physical education "girls" in Alexandria during the year 2004-2005, in order to demonstrate whether the load of training program implemented in their curriculum may or may not induce oxidative stress. A coherent prospective study was conducted on 21 apparently healthy adult females their age ranged from 18 to 19 years old with no history of chronic illness. The implemented training program consisted of about one and half hour of physical exercise per day, 6 days/week divided into aerobic and anaerobic sessions Blood samples were withdrawn at four different occasions. "the beginning of the first term, end of the first term, beginning of the second term, and finally at the end of the second term ". Plasma total antioxidant status [TAS], advanced oxidation protein products [AOPP], malondialdehyde [MDA] and serum iron were measured. Our results demonstrated that by the end of second term, the girls had about 30% significant increase in their TAS levels, 15% significant decrease in their AOPP levels and 29% significant decrease in their serum iron compared to their values at the beginning of the first term. However the MDA levels did not change. Significantly during the whole study period. Regular training induced an improvement of plasma antioxidant status accompanied by a decrease in the levels of the novel protein oxidation marker AOPP. However as iron plays a critical role in athletic performance and deficiencies are not uncommon, female athletes are advised to consume at least the recommended dietary allowance [RDA] of this micronutrient and to check regularly their iron status