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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.