# Automotive Seat Comfort and Vibration Performance Evaluation in Dynamic Settings
## 3 Results
### Laboratory Vibration Exposures
#### 3.1.3 Subjective Vibration Comfort
\begin{table}
\begin{tabular}{c c c c c c c c c c} \hline \hline \multirow{3}{*}{**Body Parts**} & \multirow{3}{*}{**Seat**} & \multicolumn{3}{c}{**Tri-Axial Field Vibration**} & \multicolumn{6}{c}{**Sinusoidal Vibration**} \\ \cline{3-10}  & & & & \multicolumn{2}{c}{**X**} & \multicolumn{2}{c}{**Y**} & \multicolumn{2}{c}{**Z**} \\ \cline{3-10}  & & & & & **Pre** & **Post** & **Pre** & **Post** & **Pre** & **Post** \\ \hline \multirow{3}{*}{Ankles /Feet} & A & 3.9 (2.4) & 2.7 (1.5) & 5.2 (6.3) & 5.2 (3.5) & 2.4 (1.1) & 2.6 (1.1) & 2.5 (1.1) & 1.9 (1.1) & 1.8 (0.7) \\  & B & 2.8 (1.5) & 1.2 (0.7) & 2.4 (2.3) & 1.1 (0.4) & 1.1 (0.4) & 1.1 (0.4) & 1.2 (0.4) & 1.8 (0.5) & 1.3 (0.5) \\  & C & 0.7 (0.4) & 0.8 (0.4) & 0.9 (1.1) & 3.2 (1.8) & 2.2 (1.1) & 2.4 (1.1) & 2.2 (1.1) & 0.8 (0.4) & 3.4 1.6) \\ \hline \multirow{3}{*}{Knees} & A & 3.9 (1.8) & 5.1 (3.1) & 8.8 (6.3) & 9.7 (7.0) & 6.2 (3.5) & 6.4 (3.6) & 10.2 (5.2) & 6.9 (4.8) & 6.6 (3.5) \\  & B & 6.1 (2.0) & 6.5 (1.9) & 7.0 (2.3) & 6.4 (2.4) & 5.9 (2.1) & 5.4 (2.2) & 7.1 (3.1) & 6.4 (2.8) & 6.8 (2.8) \\  & C & 3.1 (0.9) & 1.9 (0.6) & 3.3 (1.1) & 3.9 (1.6) & 4.6 (1.8) & 5.3 (2.2) & 6.4 (3.2) & 3.7 (1.2) & 5.7 (2.1) \\ \hline \multirow{3}{*}{Thighs} & A & 3.1 (1.3) & 2.6 (1.3) & 3.1 (1.1) & 3.2 (1.5) & 5.9 (3.2) & 5.9 (3.3) & 4.6 (2.0) & 3.1 (1.1) & 3.3 (1.3) \\  & B & 1.5 (0.9) & 3.1 (1.4) & 2.6 (0.9) & 1.3 (0.4) & 2.8 (1.6) & 3.1 (1.7) & 1.4 (0.5) & 2.0 (0.5) & 1.9 (0.8) \\  & C & 1.0 (0.5) & 1.2 (0.5) & 1.2 (0.6) & 1.7 (0.7) & 2.3 (1.1) & 3.0 (1.4) & 2.6 (1.2) & 1.2 (0.6) & 2.4 (1.2) \\ \hline \multirow{3}{*}{Tailbones} & A & 1.2 (0.5) & 2.4 (0.6) & 3.3 (1.1) & 7.2 (4.2) & 7.3 (4.1) & 5.7 (2.7) & 8.9 (4.5) & 3.4 (1.1) & 5.7 (2.7) \\  & B & 2.9 (2.0) & 1.7 (0.6) & 2.7 (0.9) & 1.6 (0.6) & 2.5 (0.6) & 2.9 (0.6) & 3.8 (1.6) & 2.0 (0.7) & 2.4 (0.6) \\  & C & 1.3 (0.6) & 1.8 (0.7) & 1.4 (0.5) & 2.7 (1.0) & 3.4 (1.0) & 2.7 (0.9) & 7.1 (2.9) & 3.8 (1.8) & 5.0 (2.1) \\ \hline \multirow{3}{*}{Lower Back} & A & 1.1 (0.4) & 3.0 (1.3) & 4.2 (1.6) & 3.6 (1.5) & 4.3 (1.8) & 3.7 (1.5) & 4.7 (1.6) & 4.9 (1.7) & 4.2 (1.3) \\  & B & 0.9 (0.5) & 1.7 (0.7) & 2.5 (1.0) & 2.3 (1.1) & 2.7 (0.6) & 2.9 (0.8) & 2.0 (0.7) & 2.3 (0.7) & 4.2 (1.1) \\  & C & 2.1 (0.9) & 2.5 (0.9) & 2.3 (0.9) & 2.5 (1.1) & 2.6 (1.0) & 2.9 (1.0) & 5.1 (2.1) & 4.8 (2.1) & 5.2 (2.1) \\ \hline \multirow{3}{*}{Upper Back} & A & 4.7 (2.9) & 2.9 (0.9) & 6.6 (3.1) & 7.9 (3.3) & 6.7 (1.6) & 5.8 (2.2) & 6.1 (1.4) & 5.3 (1.1) & 5.9 (1.5) \\  & B & 5.4 (2.4) & 4.4 (1.7) & 4.7 (1.6) & 3.8 (1.7) & 5.2 (2.3) & 4.7 (2.4) & 5.2 (2.3) & 6.3 (2.2) & 6.3 (2.7) \\  & C & 2.9 (1.1) & 3.4 (0.9) & 3.1 (0.9) & 4.3 (1.4) & 4.7 (1.2) & 4.3 (1.4) & 4.7 (1.6) & 3.3 (1.0) & 5.3 (1.6) \\ \hline \multirow{3}{*}{Shoulders} & A & 2.2 (0.8) & 4.2 (1.6) & 5.9 (2.9) & 6.7 (3.1) & 5.7 (2.1) & 5.4 (2.4) & 8.9 (3.4) & 6.9 (3.5) & 5.7 (2.1) \\  & B & 5.8 (3.2) & 5.6 (2.2) & 5.0 (2.2) & 5.2 (2.3) & 5.4 (2.5) & 4.4 (2.6) & 5.8 (2.9) & 6.4 (2.8) & 6.4 (2.8) \\ \cline{1-1}  & C & 1.8 (0.8) & 1.8 (0.6) & 3.0 (1.0) & 4.1 (2.1) & 5.1 (2.1) & 5.2 (2.2) & 6.1 (3.2) & 2.8 (1.1) & 4.9 (2.2) \\ \hline \multirow{3}{*}{Neck} & A & 6.9 (4.8) & 7.9 (5.3) & 9.7 (6.2) & 10.4 (6.9) & 7.6 (3.9) & 7.5 (3.9) & 10.5 (4.7) & 8.7 (4.8) & 7.5 (3.6) \\ \cline{1-1}  & B & 7.8 (4.4) & 6.7 (2.6) & 6.1 (2.4) & 5.8 (2.7) & 9.4 (3.3) & 7.3 (2.7) & 7.3 (2.8) & 8.6 (3.5) & 7.5 (3.3) \\ \cline{1-1}  & C & 4.2 (1.7) & 3.7 (1.4) & 4.4 (1.7) & 5.4 (2.2) & 5.2 (1.6) & 6.0 (1.8) & 6.5 (1.8) & 4.3 (1.3) & 5.1 (1.5) \\ \hline \end{tabular}
\end{table} 
Table 5: Mean (Standard error) perceived discomfort in eight body parts when exposed to the 15-min tri-axial field vibration and sinusoidal vibration (10 min per each of X, Y, Z axes) (\(n\) = 10).