# Secular Trends of Adult Population and Their Impacts in Industrial Design and Ergonomics
## 3 Results
\begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline \multirow{2}{*}{**Anthropometric Variables**} & \multicolumn{2}{c}{**Arith. Means**} & \multicolumn{2}{c}{**Dif.**} & \multicolumn{2}{c}{**Standard Deviation**} & \multicolumn{2}{c}{**Dif.**} & \multicolumn{2}{c}{**F-Test**} \\  & \multicolumn{2}{c}{**SR CZ**} & \multicolumn{2}{c}{**in \%**} & \multicolumn{2}{c}{**SR CZ**} & \multicolumn{2}{c}{**Dif.**} & \multicolumn{2}{c}{**SR**} \\ \hline
1. body weight in kg & 61.2 & 61.6 & \(-\)0.7 & \(-\)0.369 & 10.2 & 10.9 & \(-\)6.6 & 1.142 \\
2. height & 167.1 & 167.3 & \(-\)0.1 & \(-\)0.310 & 6.5 & 5.9 & 9.7 & 1.214 \\
3. eye height & 157.3 & 156.2 & 0.7 & 1.696 & 6.2 & 6.4 & \(-\)3.2 & 1.066 \\
4. shoulder height & 139.1 & 139.9 & \(-\)0.6 & \(-\)1.219 & 6.1 & 6.7 & \(-\)9.4 & 1.206 \\
5. elbow height & 106.5 & 108.3 & \(\mathbf{-1.7}\) & \(\mathbf{-2.943}\) & 5.3 & 6.7 & \(\mathbf{-23.3}\) & **1.598** \\
6. fingertip height & 65.3 & 66.6 & \(\mathbf{-2.0}\) & \(\mathbf{-2.479}\) & 4.4 & 5.9 & \(\mathbf{-29.1}\) & **1.798** \\
7. vertical reach & 209.9 & 208.7 & 0.4 & 1.261 & 9.3 & 9.1 & 2.2 & 1.044 \\
8. shoulder breadth & 41.1 & 41.9 & 1.9 & \(-\)1.930 & 3.8 & 4.3 & \(\mathbf{-12.3}\) & **1.280** \\
9. chest depth & 31.4 & 32.9 & \(\mathbf{-4.7}\) & \(\mathbf{-3.167}\) & 4 & 5.3 & \(\mathbf{-28}\) & **1.756** \\
10. upper limb length & 78.0 & 76.7 & **1.7** & **2.221** & 4.7 & 6.8 & \(\mathbf{-36.5}\) & **2.093** \\
11. span & 165.8 & 163.9 & **1.2** & **2.484** & 7.2 & 7.7 & \(-\)6.7 & 1.144 \\
12. sitting height & 86.7 & 86.3 & 0.5 & 0.600 & 5.7 & 7.4 & \(\mathbf{-26.0}\) & **1.685** \\
13. sitting eye height & 77.3 & 77.2 & 0.1 & 0.182 & 4.3 & 6.5 & \(\mathbf{-40.7}\) & **2.285** \\
14. sitting elbow height & 26.9 & 27.2 & \(-\)1.1 & \(-\)0.906 & 2.6 & 3.9 & \(\mathbf{-40.0}\) & **2.250** \\
15. shoulder-elbow length & 33.7 & 34.0 & \(-\)0.9 & \(-\)1.105 & 2.5 & 2.8 & \(-\)11.3 & 1.254 \\
16. knee height & 52.1 & 52.4 & \(-\)0.6 & \(-\)0.647 & 4 & 5.1 & \(\mathbf{-24.2}\) & **1.626** \\
17. vertical reach (sit) & 127.0 & 127.0 & 0.0 & 0 & 7.6 & 9.5 & \(\mathbf{-22.2}\) & **1.563** \\
18. elbow fingertip length & 42.1 & 42.8 & \(-\)1.6 & \(-\)1.460 & 2.6 & 6.5 & \(\mathbf{-85.7}\) & **6.250** \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Basic characteristics of anthropometric variables and their variation in the Slovak and Czech female population in the year 2008. \begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline \multirow{2}{*}{**Anthropometric Variables**} & \multicolumn{2}{c}{**Arith. Means**} & \multicolumn{2}{c}{**Dif.**} & \multirow{2}{*}{\(t\)**-Test**} & \multicolumn{2}{c}{**Standard Deviation**} & \multirow{2}{*}{**Dif.**} & \multicolumn{2}{c}{**F-Test**} \\  & \multicolumn{2}{c}{**SR CZ**} & & & & \multicolumn{2}{c}{**SR CZ**} & & \multicolumn{2}{c}{**SR**} \\ \hline
1. body weight in kg & 79.8 & 80.2 & \(-\)0.5 & \(-\)0.294 & 12.8 & 12.3 & 4.0 & 1.083 \\
2. height & 181.5 & 180.6 & 0.5 & 1.170 & 6.3 & 7.7 & \(\mathbf{-20.0}\) & **1.494** \\
3. eye height & 171.1 & 168.5 & **1.5** & **3.036** & 6.2 & 8.6 & \(\mathbf{-32.4}\) & **1.924** \\
4. shoulder height & 152.2 & 151.9 & 0.2 & 0.369 & 6.1 & 8.5 & \(\mathbf{-32.9}\) & **1.942** \\
5. elbow height & 115.3 & 115.8 & \(-\)0.4 & \(-\)0.703 & 6.6 & 6.5 & 1.5 & 1.031 \\
6. fingertip height & 72.3 & 71.3 & 1.4 & 1.742 & 4.9 & 5.6 & \(\mathbf{-13.3}\) & **1.306** \\
7. vertical reach & 229.9 & 224.8 & **2.2** & **4.699** & 9.5 & 10.4 & \(\mathbf{-9.0}\) & 1.198 \\ \hline \hline \end{tabular} Note: differences and testing criteria in bold are significant at the level of significance \(\alpha=5\%\). Source: Author’s compilation.  
\end{table} 
Table 4: Basic characteristics of anthropometric variables and their variation in the Slovak and Czech male population in the year 2018.