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Fz (% body weight)

X7. Y10. Fx (% body weight). Fy (% body weight). Fz (% body weight). Z3. Z1. Z2. gait cycle (%). X9. gait cycle (%). A. gait cycle (%). C. B. Figure 1. Table 1. Means and standard deviations （ SD) of gait parameters measured in the three days. a. p. Gait parameters.

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Fz (% body weight)

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  1. X7 Y10 Fx (% body weight) Fy (% body weight) Fz (% body weight) Z3 Z1 Z2 gait cycle (%) X9 gait cycle (%) A gait cycle (%) C B Figure 1.

  2. Table 1. Means and standard deviations （SD) of gait parameters measured in the three days a p Gait parameters 1st day 2nd day 3rd day Average in 3 days mean (SD) mean (SD) mean (SD) mean(SD) * Step length (cm) 59.43 (4.38) 59.80 (4.76) 61.09 (5.95) 60.10 (4.88) 0.002 Stride width (cm) 10.12 (1.74) 10.50 (1.75) 10.35 (1.65) 10.32 (1.63) 0.304 Stride length (cm) 119.1 (8.48) 119.9 (9.12) 122.1 (11.5) 120.4 (9.48) 0.039 * Cadence (steps/minute) 112.0 (10.0) 113.4 (11.2) 113.7 (10.7) 113.1 (10.5) 0.108 Velocity (m/minute) 66.79 (7.82) 67.96 (8.98) 69.33 (9.25) 68.03 (8.47) 0.037 * Stance phase (% of gait cycle) 66.58 (1.09) 66.46 (1.23) 66.20 (1.03) 66.43 (1.01) 0.093 Single stance phase (% of gait cycle) 33.33 (1.11) 33.52 (1.17) 33.63 (1.08) 33.50 (0.99) 0.093 Z1 (% of body weight) 107.7 (5.36) 109.6 (5.07) 110.9 (6.47) 109.4 (5.19) 0.005 * 78.30 (5.80) 77.20 (5.56) 74.88 (6.89) 76.79 (5.78) 0.001 * Z2 (% of body weight) Z3 (% of body weight) 109.0 (5.16) 109.5 (5.40) 110.6 (6.57) 109.7 (5.55) 0.037 * X7 (% of body weight) 17.45 (3.26) 17.89 (3.21) 18.73 (3.26) 18.02 (3.06) 0.002 * X9 (% of body weight) 20.06 (2.67) 20.21 (2.55) 21.14 (3.07) 20.47 (2.58) 0.003 * Y10 (% of body weight) 6.62 (1.15) 6.90 (1.38) 6.99 (1.29) 6.83 (1.21) 0.017 * Hip motionb (degree) 39.18 (3.61) 39.38 (3.12) 40.76 (3.92) 39.77 (3.19) 0.007 * Knee motionb (degree) 64.64 (4.98) 64.33 (4.67) 65.19 (5.48) 64.72 (4.56) 0.446 Ankle motionb (degree) 34.97 (6.27) 36.66 (5.76) 35.97 (6.82) 35.86 (5.63) 0.192 a Resulted in one-way analysis of variance with repeated measures in the three days. b Differences of range of motion between peak extension (plantarflexion) and peak flexion (dorsiflexion) angle during gait cycle. * P < 0.05

  3. Table 2. Intraclass correlation coefficient （1，1） and coefficient of variation before compensation procedures. ICC （1，1）a CVb Gait parameters mean (range) Step length 0.44 1.88 (0.18 - 3.44) Stride width 0.83 5.28 (0.92 – 13.0) Stride length 0.71 2.29 (0.71 - 4.77) Cadence 0.90 1.59 (0.23 - 4.48) Velocity 0.74 3.38 (1.26 - 6.63) Stance phase 0.46 0.86 (0.16 - 1.64) Single stance phase 0.56 1.63 (0.14 - 3.85) Z1 0.06 2.23 (0.20 - 7.06) Z2 0.05 3.17 (0.17 - 10.2) Z3 0.55 1.55 (0.23 - 2.95) X7 0.32 6.57 (0.51 - 14.1) X9 0.26 5.42 (0.13 - 11.8) Y10 0.52 6.19 (1.21 - 15.8) Hip motion 0.14 4.69 (0.86 - 9.14) Knee motion 0.78 3.51 (0.90 - 8.26) Ankle motion 0.55 8.00 (1.42 - 19.3) a Intracalss correlation coefficient in the three days. b Coefficient of variation in the three days.

  4. Table 3. Correlation among stride length, cadence, velocity and other gait parameters a Peason's correlation coefficient Gait parameters Stride length Cadence Velocity 0.96 * 0.14 0.70 * Step length Stride width -0.33 -0.27 -0.37 (1.00) 0.14 0.72 * Stride length Cadence 0.14 (1.00) 0.78 * Velocity 0.72 * 0.78 * (1.00) -0.29 Stance phase 0.10 -0.32 Single stance phase 0.10 0.29 0.26 Z1 0.44 0.62 * 0.69 * Z2 -0.79 * -0.56 * -0.88 * 0.65 * 0.65 * 0.35 Z3 0.74 * 0.47 0.80 * X7 0.37 0.74 * 0.74 * X9 0.04 0.57 * 0.58 * Y10 0.67 * 0.18 0.54 * Hip motion Knee motion 0.52 0.18 0.43 Ankle motion 0.27 0.32 0.40 a Calculated for the three recording sessions. * P<0.05.

  5. Table 4. Intraclass correlation coefficient (1, 1) and coefficient of variation of each parameters when compensated by the velocity Gait parameters Regression equationa P b ICC (1, 1) CV mean (range) Step length 32.29+0.409vel 0.177 0.85 1.67 (0.45 - 3.34) Stride width 15.29+0.074vel 0.215 0.50 8.12 (0.83 – 17.3) Stride length 66.06+0.798vel 0.381 0.95 1.06 (0.22 – 1.80) Cadence 48.95+0.942vel 0.218 0.93 1.20 (0.34 – 2.15) Stance phase 69.35+0.043vel 0.386 0.63 0.84 (0.06 – 1.67) Single stance phase 31.20+0.034vel 0.764 0.67 1.70 (0.19 – 4.10) Z1 78.16+0.459vel 0.356 0.96 1.54 (0.14 – 4.44) Z2 119.8+0.632vel 0.068 0.90 1.91 (0.40 – 7.24) Z3 80.36+0.432vel 0.995 0.97 1.67 (0.38 – 2.58) X7 -2.278+0.298vel 0.100 0.80 4.27 (0.16 – 9.54) X9 4.197+0.239vel 0.154 0.73 3.77 (0.27 – 10.5) Y10 2.582+0.062vel 0.610 0.82 5.61 (1.68 – 11.2) Hip motion 29.10+0.157vel 0.706 0.96 4.18 (1.62 – 7.89) Knee motion 46.41+0.269vel 0.553 0.76 3.71 (0.46 – 8.23) Ankle motion 14.58+0.311vel 0.304 0.62 7.67 (0.07 – 22.0) a Calculated for the three recording sessions by least squares method. b Resulted in one way analysis of variance with repeated measures after compensation. ICCs (1, 1), intraclass correlation coefficient; CV, coefficient of variation; vel, velocity value (m/minute)

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