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CHANGES IN PERIPHERAL BLOOD ERYTHROCYTES ACID RESISTANCE IN MEDIUM DISTANCES RUNNERS

О. А. DYCHKO (1), N. K. KAZIMIRKO (2), D. V. DYCHKO (1), S. T. KOKHAN (3), V. A. GAVRILIN (4) 1 -LUGANSK STATE MEDICAL UNIVERSITY, LUGANSK, UKRAINE 2 -DONBASS STATE PEDAGOGICAL UNIVERSITY,SLAVYANSK, UKRAINE 3 -ZABAYKALSKY STATE UNIVERSITY,CHITA, RUSSIA 4 -DONETSKY LAW INSTITUTE, DONETSK, UKRAINE
Objectives: studychanges in peripheral blood erythrocytes acid resistance in medium distances runners. Materials and methods: 50 male athletes, aged 18–21 years, who were engaged in middle-distance running (mass level). The control group consisted of 47 healthy male students of the same age who were not involved in sports.
Results: the time of the macrocyclespherulationerythrocytesreduced in the preparatory period of the training to 1.14 times, in competitive – 1.33 times, in the transitional period – 1.09 times, compared with control. Duration of haemolysis of erythrocytes in the different periods of the training macrocycle reduced: in the preparatory period – 1.12 times, in competitive – 1.25 times, compared with the control. Under the influence of physical activity duration of hemolysis of erythrocytes in the general trend towards reduction was longer in the summer training macrocycle and condensed in the winter and spring macrocycles.
Conclusions: It is determined that physical exercises in runners on medium distances cause changes of acid resistance in peripheral blood erythrocytes. The maximal changes are observed in competitive period, moderate – in preparatory period, minimal ones – in transitory period. Changes of acid resistance are influenced by year seasons.
Keywords: 
erythrocytes, acid resistance, sportsmen, marathon on medium distances, exercise, training macrocycle, seasonal changes.