Modeling of appropriate spirometric indicators in practically healthy young women from Podillia with ectomorphic somatotype

Abstract

Many researchers emphasize the practical importance of using mathematical modeling to determine the reference values of spirographic parameters, but unfortunately, there are no works that study the complex influence of anthropometric and somatotypological indicators on spirometric parameters in healthy young people. The purpose of the work was to build regression models to determine the proper indicators of external breathing in practically healthy young women (YW) ectomorphs and to establish the total influence of the constitutional characteristics of the body on spirographic parameters. We conducted a spirographic examination of 109 practically healthy YW (from 16 to 20 years inclusive) according to the American Pulmonology Association and the European Respiratory Society (2019) method on the Medgraphics Pulmonary Function System 1070 series. The anthropometric examination was carried out according to the method of Bunak V. V. as modified by Shaparenko P. P. (2000). The component composition of body weight was assessed according to Matiegka method (1921), muscle mass according to the method of the American Institute of Nutrition (1991). Somatotypological research was carried out according to the Heath-Carter (1990) method. After somatotyping, it was found that 31 YW had an ectomorphic type of constitution. For them, we conducted a direct step-by-step regression analysis in the “STATISTICA 5.5” package. On the basis of multivariate regression analysis, the total influence of anthropometric, somatotypological and dynamometric indicators on the variability of spirographic parameters of the body was determined. Mathematical modeling was carried out to determine the appropriate individual spirographic indicators in practically healthy YW of the Podillia ectomorphic somatotype. 11 reliable regression linear models were built with the accuracy of the description of the feature in the range of 57.63–94.44 %. To the greatest extent, the value of the spirometric parameters was determined by the girth of the body (most often the girth of the hand), the diameters of the pelvis (most often the external conjugate and intercristal distance), the width of the distal epiphyses (most often the shins), the skinfold thickness (most often under the shoulder blade).