Conditions of exposure to static load and vibration used in the study (the frequency weighted root mean square (rms) acceleration of vibration was calculated according to the international standard ISO 5349)
| Vibration frequency (Hz) | Unweighted acceleration (m/s2, rms) |
Frequency weighted acceleration (m/s2, rms) | Exposure duration (min) |
| Static load | 0 | 0 | 15 |
| 16 | 5.5 | 5.5 | 15 |
| 31.5 | 11 | 5.5 | 15 |
| 63 | 22 | 5.5 | 15 |
| 125 | 44 | 5.5 | 15 |
| 250 | 88 | 5.5 | 15 |