[Age-related functional characteristics of miners exposed to heat microclimate].

The article describes the functional changes with age in miners of deep coal mines in heating microclimate. The individuals of medium and senior age groups appeared to have significantly more frequent cardiovascular and thermoregulatory disorders than in the same age groups in normal climate. High temperature impairs autonomic nervous system, which presents hyperactivity of sympathicus and marked vegetative reactions in all ages, especially in the young workers.