Dynamics and differences of biochemical profile of athletes in various phases of middle mountain training compared to sea level training

Aim. The purpose of the article is to study the dynamics of responses and the current state of the body of highly skilled athletes by indicators of the biochemical profile during adaptation to natural hypobaric hypoxia. Materials and methods. The dynamics of 16 biochemical indicators was compared at similar stages of the annual training conducted in middle mountain areas (~ 1550 m) and at sea level. Fifteen female biathlon athletes of the Russian national team participated in the study. The following methods were used: analysis of morning hematological and biochemical indicators of blood during 3 mid-mountain and 4 lowland sports training events. Training loads were recorded. Results. With a comparable level and type of loads, middle mountain training leads to significant (P