The goal of my diploma work is to find out if significant growth of Slovak and Czech population was recorded over a time, based on 25 antrophometric attributes. Slovak population was represented by 204 men and 143 women back in 2004. As of 2018, numbers have changed to 183 men and 161 women represented by students of University of Technology in Zvolen, aged from 18 to 25, coming from any area of Slovakia. Czech sample was made of 2 universities; University of Tomáš Baťa in Zlín and University of Jan Perner in Pardubice. Year 2004 was represented by 186 men and 119 women. For year 2018, in Czech Republic, representive values were 158 men and 225 women from above mentioned universities. Arithmetic average was counted and compared to determine scale of fluctation for obtained values. Later, initial quantiles from year 2004 were taken into an account, counted and compared with newly-discovered quantiles from selected antrophometric attributes for adult men and women population for each of the countries examinated in a year 2018. Based on the findings, we came to a following conlusion: secular trend in past 14 years is becoming constant.