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Table 1 Data for each outcome variable

From: Comparison of programs for determining temporal-spatial gait variables from instrumented walkway data: PKmas versus GAITRite

  Healthy group Hip fracture group
  GAITRite® (mean ± SD) PKMAS® (mean ± SD) Mean difference* ± SD (% error) GAITRite® (mean ± SD) PKMAS® (mean ± SD) Mean difference* ± SD (% error)
Speed (cm/s) 129 ± 21 129 ± 21 0.3 ± 0.6 (0.4%) 60 ± 22 61 ± 23 0.4 ± 0.5 (0.9%)
Cadence (steps/min) 110 ± 10 110 ± 10 −0.1 ± 0.2 (0.1%) 93 ± 15 92 ± 15 −0.0 ± 0.1 (0.1%)
Stride length (cm) 140 ± 16 140 ± 16 −0.0 ± 0.2 (0.1%) 78 ± 25 78 ± 25 0.1 ± 0.6 (0.3%)
Step length (cm) 70 ± 8 70 ± 8 −0.1 ± 0.4 (0.5%) 39 ± 13 39 ± 13 0.2 ± 0.3 (0.7%)
Stride duration (s) 1.1 ± 0.1 1.1 ± 0.1 0.00 ± 0.00 (0.04%) 1.3 ± 0.2 1.3 ± 0.2 0.00 ± 0.00 (0.1%)
Step duration (s) 0.55 ± 0.05 0.55 ± 0.05 0.000 ± 0.003 (0.5%) 0.67 ± 0.11 0.67 ± 0.11 −0.001 ± 0.004 (0.5%)
Stance duration (s) 0.69 ± 0.07 0.69 ± 0.07 0.003 ± 0.006 (1.2%) 0.93 ± 0.18 0.94 ± 0.18 0.011 ± 0.019 (1.4%)
Swing duration (s) 0.41 ± 0.03 0.41 ± 0.03 −0.002 ± 0.004 (0.5%) 0.40 ± 0.08 0.40 ± 0.08 −0.004 ± 0.007 (1.3%)
Double support duration (s) 0.28 ± 0.04 0.28 ± 0.05 0.004 ± 0.008 (1.5%) 0.53 ± 0.16 0.53 ± 0.16 0.009 0.013 (1.8%)
Stance time as a percentage of cycle time (%) 62.6 ± 1.3 62.8 ± 1.4 0.17 ± 0.35 (0.3%) 69.6 ± 4.5 69.9 ± 4.5 0.30 ± 0.46 (0.5%)
Double support time as a percentage of cycle time (%) 25.3 ± 2.6 25.7 ± 2.8 0.39 ± 0.84 (2.1%) 39.3 ± 8.9 39.8 ± 9.1 0.52 ± 0.98 (1.9%)
Base width (cm) 8.7 ± 2.5 7.1 ± 2.8 −1.64 ± 0.71 (21.4%) 10.4 ± 3.7 8.9 ± 3.9 −1.58 ± 1.00 (19%)
Foot angle (°) 6.8 ± 3.8 7.5 ± 3.7 0.65 ± 1.02 (66%) 7.7 ± 5.7 8.5 ± 5.6 0.76 ± 0.82 (40%)
Variability (SD) in Stride Length (cm) 2.4 ± 1.2 2.6 ± 1.2 0.17 ± 0.50 (28%) 4.1 ± 1.9 4.1 ± 1.8 0.00 ± 0.43 (9%)
Variability (SD) in Step Length (cm) 1.6 ± 0.7 1.7 ± 0.8 0.03 ± 0.55 (32%) 2.7 ± 1.1 2.7 ± 1.0 −0.08 ± 0.56 (17%)
Variability (SD) in Stride Duration (s) 0.02 ± 0.01 0.02 ± 0.01 0.001 ± 0.003 (7%) 0.07 ± 0.04 0.07 ± 0.04 0.000 ± 0.002 (2.3%)
Variability (SD) in Step Duration (s) 0.01 ± 0.01 0.01 ± 0.01 −0.001 ± 0.005 (20%) 0.04 ± 0.02 0.04 ± 0.02 −0.001 ± 0.004 (8%)
Variability (SD) in Step Width (cm) 1.9 ± 0.9 2.0 ± 0.9 0.05 ± 0.18 (9%) 1.8 ± 0.8 2.0 ± 0.9 0.12 ± 0.23 (11%)
  1. *Negative differences indicate GAITRite® higher than PKmas®.
  2. SD = standard deviation.
  3. Mean ± SD, mean difference ± SD and mean absolute percentage error, for each group, each system and each variable.