Airway Conductance in High School Students Living in the European North

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Spirography and pneumotachometry have been used to study airway conductance in apparently healthy high school students aged 15-18 years (120 boys and 120 girls) who were born and reside in Arkhangel'sk. The study was performed in winter. The values of forced expiratory volume during 1 s (FEV1) in the high school students living in the North are 3-22% higher than the reference values and the actual mean volume rates (MVR25-75) are 5-17% lower than the respective reference values in all age and sex groups. The forced expiration time constant at the level of small bronchi is higher than that for medium bronchi.

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