Table 3 Frequency analysis cross-tabulated by age and vibration axis.
From: The effects of head movement on dual-axis cervical accelerometry signals
| Â | A-P direction | S-I direction | ||||
|---|---|---|---|---|---|---|
| Â | f p | f c | BW | f p | f c | BW |
Age < 35 | 0.54 ± 0.21 | 3.22 ± 1.89 | 10.4 ± 5.54 | 0.49 ± 0.12 | 6.47 ± 3.75 | 14.9 ± 6.90 |
35 ≤ Age < 45 | 0.47 ± 0.10 | 9.56 ± 14.3 | 32.6 ± 42.16 | 0.53 ± 0.12 | 4.06 ± 2.48 | 17.1 ± 17.1 |
45 ≤ Age < 55 | 0.49 ± 0.05 | 9.09 ± 12.5 | 26.2 ± 25.6 | 0.60 ± 0.17 | 10.6 ± 10.4 | 34.9 ± 35.1 |
Age ≥ 55 | 0.68 ± 0.28 | 3.46 ± 2.13 | 35.9 ± 38.5 | 0.64 ± 0.16 | 10.5 ± 9.90 | 45.4 ± 58.2 |