234 healthy persons aged from 16-70 (142 males and 92 females) measured ventilatory function were studied during 1994-1996 using Spiroanalyser ST 300 of Japan. The result: In men aged from 16-25, Coefficient A of regression equation of IVC, FVC, FEV1 was positive, meaning values of criteria increased according to age. In women, Coefficient A of regression equation of FVC, FEV1, MMF, PEF, V75, V50, V25, MVV was positive, their values increased according to age, except IVC and MEFR, their coefficient A was negative, decreased according to age. However in both sexes, these ventilatory function values increased according to high. In group of persons aged from 16-70 for both sexes, this values increased with high but decreased when age advanced
Pulmonary Ventilation ; Vietnam ; Age Factors