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Table 3 Effects of gait speed on spatio-temporal characteristics of gait in PD and controls on a motorized treadmill

From: Effect of gait speed on gait rhythmicity in Parkinson's disease: variability of stride time and swing time respond differently

  80% of CWS (P value*) 90% of CWS (P value*) CWS 110% of CWS (P value*)
a) PD Subjects (n = 36)
Average gait speed (m/sec) 0.84 ± 0.11 (<0.001) 0.95 ± 0.13 (<0.001) 1.05 ± 0.14 1.16 ± 0.16 (<0.001)
Average Stride Length (m) 1.05 ± 0.16 (<0.001) 1.13 ± 0.15 (<0.001) 1.20 ± 0.15 1.26 ± 0.14 (<0.001)
Average Stride Time (sec) 1.26 ± 0.15 (<0.001) 1.20 ± 0.13 (<0.001) 1.14 ± 0.11 1.09 ± 0.10 (0.020)
Average Swing Time (%) 32.39 ± 3.06 (<0.001) 33.02 ± 2.78 (0.051) 33.62 ± 2.48 33.89 ± 2.64 (0.032)
Stride Time Variability (%) 2.20 ± 1.55 (0.002) 2.01 ± 1.24 (0.062) 1.76 ± 0.57 1.61 ± 0.63 (0.826)
Swing Time Variability (%) 2.66 ± 1.57 (0.478) 2.55 ± 1.15 (0.839) 2.51 ± 0.98 2.48 ± 1.32 (0.855)
b) Control Subjects (n = 30)
Average gait speed (m/sec) 0.97 ± 0.15 (<0.001) 1.09 ± 0.17 (<0.001) 1.21 ± 0.19 1.33 ± 0.21 (<0.001)
Average Stride Length (m) 1.19 ± 0.15 (<0.001) 1.25 ± 0.15 (<0.001) 1.33 ± 0.14 1.39 ± 0.14 (<0.001)
Average Stride Time (sec) 1.24 ± 0.15 (<0.001) 1.17 ± 0.14 (0.001) 1.11 ± 0.11 1.06 ± 0.10 (0.001)
Average Swing Time (%) 34.74 ± 1.65 (0.002) 35.12 ± 1.47 (0.074) 35.62 ± 1.45 36.25 ± 1.34 (0.026)
Stride Time Variability (%) 1.72 ± 0.74 (0.644) 1.56 ± 0.59 (0.597) 1.64 ± 0.80 1.44 ± 0.67 (0.178)
Swing Time Variability (%) 2.12 ± 0.92 (0.758) 1.99 ± 0.71 (0.424) 2.18 ± 1.22 2.00 ± 1.10 (0.459)
  1. CWS: Comfortable walking speed as determined on level ground when walking with a walker.
  2. *P values determined using a repeated measures approach (see Methods) based on comparisons between comfortable walking to slower/faster walking in PD and controls.