The aim of the work is the quantification of changes in the stature height and body weight of the adult population over time, which represents key ergonomic information for many areas. Based on the previous research on the dimensions of the adult Slovak population, we conclude that there has been a seculargrowth of the adult population over 50 years, which has a fundamental impact on the proposals for the arrangement of optimal and safe working, as weil as residential and non-residential space. The mentioned trend also affects the consumption and use of any aspects of human life. On a sample of 11,052 Slovakian respondents aged 18-25, we defined the values of the arithmetic mean of stature height, body weight, and BMI separately by gender. In addition, the basic descriptive statistics of these parameters were also calculated. As a result, during the monitored period, there is an annual increase in body height by 0.1392 cm for men and 0.1013 cm for women. Anotherfinding is that there is an annual increase in body weight of 0.1881 kg for men and 0.0769 kg for women. In the near future, it is necessary to take into account the secular trend of the Slovak population and urgently deal with the standards that deal with height and weight limits.