Table 6
RMS Mean (m/s2) | Standard Deviation (m/s2) | Number of Subjects | |||||||
Roughness (in/ft) Surface Type | Seat | Foot | Back | Seat | Foot | Back | Seat | Foot | Back |
0.205 Engineered | 1.67 | 1.68 | 1.02 | 2.15 | 0.92 | 0.46 | 72 | 69 | 73 |
0.309 Engineered | 2.29 | 2.80 | 1.55 | 1.61 | 1.92 | 0.63 | 71 | 66 | 71 |
0.383 Engineered | 2.66 | 2.99 | 1.63 | 2.43 | 1.75 | 0.59 | 70 | 64 | 70 |
0.405 Outside | 1.64 | 2.19 | 1.13 | 1.01 | 1.25 | 0.34 | 14 | 14 | 14 |
0.441 Outside | 3.01 | 3.97 | 1.85 | 2.23 | 2.41 | 0.62 | 14 | 10 | 14 |
0.457 Outside | 3.62 | 2.62 | 2.03 | 2.67 | 1.33 | 2.14 | 8 | 5 | 8 |
0.485 Outside | 2.57 | 3.67 | 1.44 | 2.30 | 2.55 | 0.60 | 14 | 12 | 14 |
0.486 Outside | 2.28 | 3.82 | 1.63 | 1.41 | 3.19 | 0.60 | 14 | 14 | 14 |
0.494 Outside | 2.50 | 2.86 | 1.24 | 2.17 | 1.75 | 0.50 | 14 | 10 | 14 |
0.565 Outside | 4.35 | 6.77 | 2.48 | 3.26 | 5.24 | 2.04 | 7 | 5 | 7 |
0.572 Engineered | 4.34 | 5.19 | 2.91 | 3.31 | 3.38 | 1.68 | 72 | 68 | 72 |
0.578 Engineered | 2.99 | 3.68 | 2.35 | 2.13 | 2.38 | 2.48 | 70 | 67 | 70 |
0.673 Outside | 3.52 | 5.23 | 2.81 | 1.57 | 2.93 | 1.09 | 12 | 12 | 12 |
0.718 Engineered | 4.65 | 6.29 | 3.06 | 3.14 | 4.34 | 1.18 | 68 | 65 | 68 |
0.778 Outside | 5.49 | 6.36 | 2.75 | 5.32 | 4.17 | 1.27 | 14 | 13 | 14 |
0.804 Outside | 3.70 | 5.07 | 2.65 | 2.05 | 2.77 | 1.18 | 14 | 14 | 14 |
0.885 Outside | 4.60 | 7.06 | 2.77 | 2.92 | 6.57 | 2.10 | 7 | 5 | 7 |
0.914 Outside | 3.78 | 5.50 | 1.93 | 4.17 | 3.24 | 0.94 | 13 | 10 | 13 |
0.921 Engineered | 6.50 | 7.83 | 4.20 | 4.01 | 4.96 | 1.78 | 54 | 48 | 54 |
0.947 Outside | 3.14 | 4.18 | 2.26 | 1.81 | 2.61 | 0.73 | 15 | 15 | 16 |
1.053 Outside | 10.13 | 11.25 | 5.26 | 6.31 | 5.97 | 1.95 | 8 | 7 | 8 |
1.213 Engineered | 5.87 | 7.30 | 4.05 | 3.69 | 4.62 | 1.67 | 66 | 63 | 66 |
1.26 Outside | 7.08 | 6.93 | 3.99 | 4.63 | 3.06 | 2.78 | 8 | 5 | 8 |
1.421 Outside | 4.45 | 6.74 | 3.43 | 2.11 | 3.73 | 1.23 | 14 | 14 | 14 |
1.545 Engineered | 9.29 | 10.56 | 5.98 | 5.09 | 5.91 | 2.10 | 53 | 50 | 51 |
1.68 Outside | 8.86 | 11.54 | 7.11 | 5.11 | 5.22 | 2.75 | 13 | 10 | 13 |
2.017 Outside | 12.60 | 14.29 | 6.49 | 8.46 | 8.89 | 3.74 | 6 | 5 | 6 |