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Table 6 Ability of gait parameters to discriminate between fallers and non-fallers

From: Gait analysis with the Kinect v2: normative study with healthy individuals and comprehensive study of its sensitivity, validity, and reliability in individuals with stroke

 Higher fall riskLower fall riskStatistical significanceROC
Speed (m/s)0.55 (0.32)1.00 (0.23)p = 0.0000.866
Stride length (m)0.76 (0.37)1.14 (0.20)p = 0.0000.826
Stride time (s)1.52 (0.32)1.17 (0.15)p = 0.0000.857
Step length (m)0.38 (0.18)0.57 (0.10)p = 0.0000.833
Step time (s)0.75 (0.15)0.58 (0.07)p = 0.0000.846
Step width (m)0.21 (0.07)0.17 (0.05)p = 0.0150.668
Cadence (step/min)81.88 (15.71)103.92 (12.51)p = 0.0000.858
Step asymmetry (m)0.09 (0.05)0.07 (0.10)p = 0.4010.685
Swing time (s)0.31 (0.14)0.40 (0.08)p = 0.0030.715
Double support time (s)0.56 (0.18)0.37 (0.17)p = 0.0000.797
Trunk obliquity (°)9.54 (4.72)5.90 (2.14)p = 0.0000.759
Trunk tilt (°)11.53 (5.02)7.75 (2.14)p = 0.0000.762
Trunk rotation (°)22.50 (7.89)20.09 (7.13)p = 0.2280.612
Pelvic obliquity (°)9.83 (3.40)8.50 (2.15)p = 0.0520.590
Pelvic tilt (°)25.24 (12.35)20.03 (7.15)p = 0.0290.606
Pelvic rotation (°)15.67 (6.81)14.67 (5.95)p = 0.5520.541
Hip abduction-adduction (°)13.43 (3.43)11.95 (2.31)p = 0.0390.612
Hip flexion-extension (°)45.97 (10.91)53.54 (7.79)p = 0.0020.725
Hip height variation (cm)0.06 (0.03)0.13 (0.22)p = 0.1890.651
Knee valgus-varus alignment (°)18.75 (6.69)20.05 (5.13)p = 0.3900.577
Knee flexion-extension (°)44.35 (8.07)46.12 (11.36)p = 0.5520.549
Knee height variation (cm)0.13 (0.10)0.13 (0.14)p = 0.9720.575
Ankle height variation (cm)0.14 (0.04)0.21 (0.10)p = 0.0040.760
  1. Significant correlations of variable strength emerged between spatiotemporal and kinematic parameters obtained by the Kinect v2-based gait analysis and standardized clinical scales. ROC: receiver operating characteristic