Age peculiarities of spirometric indices within the juvenile period of ontogenesis
In the modern world, there are many causes (reducing the elasticity of the lungs, reducing bronchial tubes, reducing the strength of the respiratory muscles) that affect the parameters of external respiration. Knowledge of age, sexual and regional features of spirometric indicators helps to differentiate and detect the degree of disturbance of respiratory biomechanics and to choose effective treatments that are most appropriate for established violations. The purpose of the work is to establish the age-old peculiarities of the spirographic indexes of virtually healthy young men and women within the juvenile period of ontogenesis. We conducted a survey of 141 young women (from 16 to 20 years of age) and 154 young men (from 17 to 21 years) of adolescence. The spirographic study was conducted according to the generally accepted methodology of the American Association of Pulmonologists adopted in 1994 on the device Medgraphics Pulmonary Function System 1070 series. The analysis of the obtained results was carried out with the help of the license program "Statistica 5.5" using nonparametric methods of estimating indicators. The progressive age dynamics of the vital capacity, forced vital capacity, forced capacity of the lungs on the inhalation, volume exhalation velocity was detected in young women in 25% and 50% respectively of the forced vital capacity, the average expiration flow, the residual volume of exhalation and the forced inspiratory flow, respectively is 50% of exhalation from the forced vital capacity. In the last year (20 years) of the youthful period of ontogenesis in young women, the maximum arbitrary ventilation of the lungs is increased, the volume exhalation rate is 75%, and from 75% to 85% of exhalation from the forced vital capacity, the one-second volume of forced exhalation and maximal peak flow of exhalation. Within the juvenile period of ontogenesis in young men, the vital capacity of the lungs increases, the maximum arbitrary ventilation of the lungs and the maximum peak flow of exhalation. Only in the last year of the youthful period of ontogeny (21 years) in young men there is an increase in forced vital capacity, volume exhalation velocity, respectively, in 25% of the forced vital capacity, the residual volume of exhalation, one-second volume of forced exhalation was observed at the end.
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