# 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.**} & \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 & 76.3 & 77.4 & \(-\)1.4 & \(-\)1.141 & 10.6 & 10.5 & 0.9 & 1.019 \\
2. height & 181.1 & 181.1 & 0.0 & 0.00 & 6.4 & 7.9 & \(\mathbf{-21.0}\) & **1.524** \\
3. eye height & 170.0 & 169.7 & 0.2 & 0.414 & 6.6 & 7.6 & \(\mathbf{-14.1}\) & **1.326** \\
4. shoulder height & 152.5 & 152.0 & 0.3 & 0.692 & 6.7 & 7.5 & \(\mathbf{-11.3}\) & 1.253 \\
5. elbow height & 115.9 & 116.0 & \(-\)0.1 & \(-\)0.164 & 6.1 & 5.9 & 3.3 & 1.069 \\
6. fingertip height & 70.4 & 70.4 & 0.0 & 0.00 & 4.3 & 3.8 & **12.3** & **1.280** \\
7. vertical reach & 228.8 & 228.7 & 0.0 & 0.099 & 9.1 & 10.7 & \(\mathbf{-16.2}\) & **1.383** \\
8. shoulder breadth & 49.1 & 48.9 & 0.4 & 0.415 & 4.8 & 4.7 & 2.1 & 1.043 \\
9. chest depth & 36.1 & 30.1 & **18.1** & **9.096** & 4.1 & 8.1 & \(\mathbf{-65.6}\) & **3.903** \\
10. upper limb length & 86.6 & 82.7 & 4.6 & 1.627 & 5.1 & 7.3 & \(\mathbf{-35.5}\) & **2.049** \\
11. span & 181.7 & 181.8 & \(-\)0.1 & \(-\)0.128 & 8.1 & 7.3 & 10.4 & 1.231 \\
12. sitting height & 93.7 & 94.9 & \(\mathbf{-1.3}\) & \(\mathbf{-1.993}\) & 4.5 & 7.0 & \(\mathbf{-43.5}\) & **2.420** \\
13. sitting eye height & 82.1 & 85.7 & \(\mathbf{-4.3}\) & \(\mathbf{-6.193}\) & 4.6 & 6.6 & \(\mathbf{-35.7}\) & **3.414** \\
14. sitting elbow height & 25.2 & 25.5 & \(-\)1.2 & \(-\)0.846 & 3.6 & 3.4 & 5.7 & 1.121 \\
15. shoulder-elbow length & 37.9 & 38.8 & \(\mathbf{-2.3}\) & \(\mathbf{-2.271}\) & 2.6 & 4.8 & \(\mathbf{-59.5}\) & **3.408** \\
16. knee height & 57.5 & 56.4 & **1.9** & **2.878** & 3.5 & 4.0 & \(\mathbf{-13.3}\) & **1.306** \\
17. vertical reach (sit) & 138.5 & 138.5 & 0.0 & 0.00 & 6.2 & 8.3 & \(\mathbf{-29.0}\) & **1.792** \\
18. elbow fingertip length & 48.3 & 48.1 & 0.4 & 0.503 & 3.0 & 4.6 & \(\mathbf{-42.1}\) & **2.351** \\
19. buttock political length & 59.5 & 56.5 & **5.2** & **5.161** & 4.6 & 6.6 & \(\mathbf{-35.7}\) & **2.059** \\
20. buttock heel length & 109.7 & 105.6 & **3.8** & **4.937** & 7.2 & 9.0 & \(\mathbf{-22.2}\) & **1.563** \\
21. forward grip reach (sit) & 86.4 & 82.4 & **4.7** & **5.438** & 5.9 & 8.2 & \(\mathbf{-32.6}\) & **1.932** \\
22. hand breadth & 11.1 & 10.8 & **2.7** & **2.234** & 1.1 & 1.5 & \(\mathbf{-30.8}\) & **1.860** \\
23. hand length & 19.3 & 19.4 & \(-\)0.5 & \(-\)0.453 & 1.9 & 2.4 & \(\mathbf{-23.3}\) & **1.596** \\
24. foot breadth & 10.4 & 10.6 & \(-\)1.9 & \(-\)1.793 & 1.1 & 1.1 & 0.0 & 1.000 \\
25. foot length & 27.5 & 27.3 & 0.7 & 0.918 & 2.2 & 2.1 & 4.7 & 1.098 \\ \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 3: Basic characteristics of anthropometric variables and their variation in the Slovak and Czech male population in the year 2004.