*Instrumented measure of sway | Group with MS | Control group | Mann–Whitney U (p-value) |
---|---|---|---|
AP jerk (m2/s5) | 0.274 (0.000–0.609) | 0.027 (0.020–0.033) | 60 (p < 0.0001) |
Horizontal jerk (m2/s5) | 5.72 (0.000–12.19) | 0.521 (0.413–0.629) | 57 (p < 0.0001) |
ML jerk (m2/s5) | 0.151 (0.000–0.335) | 0.0066 (0.0051–0.0082) | 33 (p < 0.0001) |
Horizontal sway area (m2/s4) | 0.146 (0.000–0.317) | 0.012 (0.010–0.015) | 47 (p < 0.0001) |
95 % confidence circle area (m2/s4) | 1.533 (0.317–2.749) | 0.207 (0.167–0.247) | 62 (p < 0.0001) |
95 % confidence ellipse area (m2/s4) | 1.043 (0.081–2.005) | 0.128 (0.101–0.154) | 43 (p < 0.0001) |
AP root mean square (m/s2) | 0.249 (0.175–0.323) | 0.129 (0.118–0.140) | 68 (p = 0.0002) |
Horizontal root mean square (m/s2) | 0.291 (0.195–0.388) | 0.144 (0.131–0.156) | 59 (p < 0.0001) |
ML root mean square (m/s2) | 0.140 (0.075–0.204) | 0.057 (0.047–0.068) | 58 (p < 0.0001) |
Horizontal mean sway velocity (m/s) | 0.689 (0.536–0.841) | 0.403 (0.346–0.459) | 76 (p = 0.00053) |
AP sway radius (m/s2) | 0.191 (0.139–0.242) | 0.103 (0.094–0.113) | 71 (p = 0.00028) |
Horizontal sway radius (m/s2) | 0.236 (0.166–0.307) | 0.122 (0.111–0.133) | 56 (p < 0.0001) |
ML sway radius (m/s2) | 0.101 (0.062–0.140) | 0.046 (0.037–0.055) | 57 (p < 0.0001) |
AP sway path length (m/s2) | 16.08 (11.68–20.48) | 8.76 (7.82–9.69) | 67 (p = 0.00018) |
Horizontal sway path length (m/s2) | 21.78 (15.52–28.04) | 10.74 (9.68–11.81) | 51 (p < 0.0001) |
ML sway path length (m/s2) | 11.28 (7.89–14.67) | 4.54 (4.01–5.08) | 30 (p < 0.0001) |
AP range of acceleration (m/s2) | 1.469 (0.928–2.011) | 0.693 (0.636–0.751) | 66 (p = 0.00016) |
Horizontal range of acceleration (m/s2) | 1.768 (1.020–2.516) | 0.769 (0.705–0.834) | 51 (p < 0.0001) |
ML range of acceleration (m/s2) | 0.928 (0.405–1.452) | 0.307 (0.258–0.356) | 48 (p < 0.0001) |
AP total spectral power (m2/s4) | 31.63 (7.17–56.10) | 4.14 (3.42–4.85) | 69 (p = 0.00023) |
Horizontal total spectral power (m2/s4) | 17.46 (4.57–30.34) | 2.40 (2.02–2.78) | 48 (p < 0.0001) |
ML total spectral power (m2/s4) | 12.92 (0.00–28.81) | 0.641 (0.504–0.778) | 31 (p < 0.0001) |