Table 3. P values from the statistical comparison of vibration and non-vibration sides.
| Time | R0 (PI) | R1 (PI) | R2 (PI) | R3 (PI) |
| Non-vibration | 1.000 | 1.000 | 1.000 | 1.000 |
| Vibration | 1.000 | 1.000 | 1.000 | 1.000 |
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