## 3 Results
### \"Virtual-Real\" Comparison of Material Pressure Properties
\begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline \multirow{2}{*}{**Mean**} & \multirow{2}{*}{\begin{tabular}{c} **Std.** \\ **Deviation** \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **Std. Error** \\ **Mean** \\ \end{tabular} } & \multirow{2}{*}{\
\begin{tabular}{c} **95\% Confidence Interval** \\ **of the Difference** \\ \end{tabular} } & \multirow{2}{*}{**t**} & \multirow{2}{*}{**df**} & \multirow{2}{*}{**
\begin{tabular}{c} **Sig.** \\ **(2-Tailed)** \\ \end{tabular} } \\ \cline{5-8}  & & & & & & **Lower** & **Upper** \\ \hline PV-PR & 0.086 & 0.239 & 0.020 & 0.046 & 0.126 & 4.246 & 139 & 0.000 \\ \hline \hline \end{tabular}
\end{table} 
Table 6: Paired samples test. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline  & & **Levene Statistic** & **df1** & **df2** & **Sig.** \\ \hline \multirow{4}{*}{\
\begin{tabular}{c} PR \\ Based on Median \\ Based on Median and with adjusted df \\ Based on trimmed mean \\ \end{tabular} } & 0.461 & 6 & 133 & 0.836 \\  & & 0.401 & 6 & 133 & 0.877 \\  & & 0.401 & 6 & 125.434 & 0.877 \\ \hline \multirow{4}{*}{
\begin{tabular}{c} PV \\ Based on Median and with adjusted df \\ Based on trimmed mean \\ \end{tabular} } & 0.432 & 6 & 133 & 0.856 \\ \cline{1-1}  & & 0.253 & 6 & 133 & 0.957 \\ \cline{1-1}  & & 0.247 & 6 & 133 & 0.960 \\ \cline{1-1}  & & 0.247 & 6 & 129.979 & 0.960 \\ \cline{1-1}  & & 0.254 & 6 & 133 & 0.957 \\ \hline \hline \end{tabular}
\end{table} 
Table 5: Test of homogeneity of variance. The analysis results show that as the elongation decreases, the average PR-PV difference value gradually increases, indicating that there are significant differences in the pressure distributions of different human body parts. The rigid parts show smaller pressure differences, while the flexible parts show significant differences. At 10% and 20% elongation, the average difference in PR-PV at the waist and ankles was the smallest (0.02 kPa). In contrast, the hips had the largest average PR-PV difference value (\(-0.10\) kPa). Overall, the average difference between PR and PV at different sites was generally negative or close to 0. However, it is important to note that the difference values \begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline \multirow{2}{*}{**Elongation**} & \multirow{2}{*}{**Mean**} & \multirow{2}{*}{**Minimum**} & \multirow{2}{*}{**Maximum**} & \multirow{2}{*}{**Diff\({}_{\text{Max-Min}}\)**} & \multicolumn{3}{c}{**Percentiles**} \\ \cline{5-8}  & & & & & **25** & **50** & **75** \\ \hline
20\% & \(-0.02\) & \(-0.06\) & \(0.25\) & \(0.31\) & \(0.02\) & \(-0.13\) & \(-0.07\) \\
15\% & \(-0.11\) & \(-0.19\) & \(0.16\) & \(0.35\) & \(0.08\) & \(-0.34\) & \(-0.19\) \\
10\% & \(-0.04\) & \(-0.01\) & \(0.39\) & \(0.40\) & \(-0.05\) & \(-0.18\) & \(0.01\) \\
5\% & \(-0.12\) & \(-0.01\) & \(-0.21\) & \(-0.20\) & \(-0.06\) & \(-0.05\) & \(-0.16\) \\ Avg. & \(-0.07\) & \(-0.07\) & \(0.15\) & \(0.22\) & \(0.00\) & \(-0.18\) & \(-0.10\) \\ \hline \hline \end{tabular}
\end{table} 
Table 7: Differences in pressure data (Dif.PR–PV) under frequency statistics, kPa. Figure 3: Comparison of PV and PR data of five materials: (**a–e**) pressure of M1, M2, M3, M4, and M5; (**f**) average difference. \begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline \multirow{2}{*}{**Elongation**} & \multicolumn{4}{c}{**In Flexible Part**} & \multicolumn{4}{c}{**In Rigid Part**} \\ \cline{2-9}  & **Waist** & **Hip** & **Thigh** & **Mid\(-\)Thigh** & **Calf** & **Knee** & **Ankle** \\ \hline
20\% & \(0.004\) & \(-0.03\) & \(-0.03\) & \(-0.03\) & \(-0.05\) & \(0.07\) & \(-0.04\) \\
15\% & \(-0.08\) & \(-0.14\) & \(-0.08\) & \(-0.10\) & \(-0.09\) & \(-0.02\) & \(0.001\) \\
10\% & \(-0.15\) & \(-0.14\) & \(-0.04\) & \(0.02\) & \(0.06\) & \(0.04\) & \(0.06\) \\
5\% & \(-0.07\) & \(-0.10\) & \(-0.16\) & \(-0.17\) & \(-0.13\) & \(-0.02\) & \(-0.07\) \\ Avg. & \(-0.07\) & \(-0.10\) & \(-0.08\) & \(-0.07\) & \(0.05\) & \(0.02\) & \(-0.02\) \\ \hline \hline \end{tabular}
\end{table} 
Table 8: Average difference values of PR–PV in various body parts, kPa.