%0 Conference Article %T THE EFFECT OF PRE-TRAINING ON ACCLIMATIZATION IN THE MOUNTAINS %A Grigoreva, I.V. %A Volkova, E.G. %A Protopopov, A.M. %K acclimatization, training, breath holding, hypoxia, physical preparation, stable phase %J MODERN TECHNOLOGIES AND SYSTEMS IN TRANSPORT: PROBLEMS AND PROSPECTS %D 2026 %P 2 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov