[External respiratory function in healthy subjects under joint exposure to conditions of a central highlands and a salt mine microclimate].

Spirographic examinations have been performed in 20-25-year-old healthy men randomized into two groups. Group I subjects underwent a 24-day adaptation to the climate of moderate altitudes (2100 m above the sea level). In addition, group II subjects spent a few hours daily (day 5-23, altogether 170 hours) in a salt mine Chon-Tuz. It was found that in healthy men microclimate of a salt mine potentiated the adaptive changes of external respiration in moderate altitudes as shown by increased bronchial permeability and vital capacity indicating growing functional reserves of external respiration.