Table 3. The mean frequency (SD) of power spectral density of accelerations (PSDA) in three different directions during different walking conditions.
| Walking | Normal Walking | Tandem Walk | T-bar | Obstacle Negotiation | ||||
|---|---|---|---|---|---|---|---|---|
| Group | Control | OT | Control | OT | Control | OT | Control | OT |
| Walking Speed (m/s) | 1.08(0.13) | 1.29(0.21) | 0.51(0.16) | 0.44(0.18) | 0.70(0.11) | 0.67(0.25) | 0.88(0.15) | 0.88(0.13) |
| Mean frequency of PSDA in Vertical Direction (Hz) | 4.91(0.85) | 5.18(0.87) | 5.82(0.77)& | 5.86(0.46)& | 5.68(0.82) | 5.53(0.83) | 5.90(0.99) | 5.32(0.84) |
| Mean frequency of PSDA in Anterior-Posterior Direction (Hz) | 5.81(0.74) | 5.75(1.24) | 5.43(0.92) | 5.34(0.63) | 5.32(0.45) | 5.69(0.66) | 5.65(0.35) | 5.71(0.45) |
| Mean frequency of PSDA in Medial-lateral Direction (Hz) | 5.18(0.98) | 4.98(0.59) | 5.17(2.05) | 7.26(0.72)*& | 5.46(0.81) | 6.72(1.04)*& | 4.48(1.32) | 6.22(1.60)*& |
*: represents significant differences between patients with OT and Controls.
&: represents differences between Tandem walk, T-bar or Obstacle negotiation and Normal walking condition.