Table 3.
ICCs for between-day reliability of Xsens-based lower extremity joint angles during running compared to previously reported ICC between-day reliability estimates of marker-based optical motion capture (OMC) and markerless motion analysis. Orange, yellow, light green, and dark green coloring indicate poor, moderate, good, and excellent reliability according to Koo and Li [28].
| Category | Variable | Current Study IMU-Based (Xsens) |
Okahisa et al. (2023) [39] OMC (Vicon) |
Stoneham et al. (2019) [40] OMC (Vicon) |
Moran et al. (2023) Markerless [41] (Theia/Visual3D) |
||
|---|---|---|---|---|---|---|---|
| ICC Median [Range] | ICC | ICC [95% CI] | ICC [95% CI] | ||||
| Asphalt | Woodchip | Lab Floor PiG * | Lab Floor CGM2 * | Lab Floor PiG * | Lab Floor | ||
| Hip | Initial hip flexion |
0.92 [0.89, 0.95] | 0.96 [0.83, 0.96] | 0.80 | 0.87 | 0.89 [0.72, 0.96] | 0.86 [0.80, 0.91] |
| Initial hip ab-/adduction |
0.52 [0.44, 0.68] | 0.49 [0.29, 0.62] | 0.67 | 0.75 | 0.81 [0.54, 0.93] | 0.75 [0.64, 0.83] | |
| Peak hip abduction |
0.83 [0.70, 0.85] | 0.74 [0.63, 0.77] | 0.45 | 0.84 | 0.69 [0.31, 0.88] | 0.91 [0.87, 0.94] | |
| Knee | Initial knee flexion |
0.92 [0.90, 0.95] | 0.92 [0.89, 0.96] | 0.74 | 0.81 | 0.76 [0.44, 0.91] | 0.88 [0.83, 0.92] |
| Peak knee flexion |
0.82 [0.75, 0.88] | 0.89 [0.85, 0.93] | 0.74 | 0.89 | 0.78 [0.49, 0.92] | 0.90 [0.86, 0.94] | |
| Ankle | Initial ankle dorsiflexion |
0.90 [0.82, 0.94] | 0.88 [0.87, 0.95] | 0.87 | 0.93 | 0.95 [0.86, 0.98] | 0.94 [0.90, 0.96] |
| Peak ankle dorsiflexion |
0.38 [0.23, 0.52] | 0.47 [−0.02, 0.49] | 0.68 | 0.86 | 0.85 [0.63, 0.95] | 0.76 [0.66, 0.84] | |
| Initial ankle inversion |
0.81 [0.77, 0.90] | 0.72 [0.64, 0.85] | not available | 0.69 [0.31, 0.88] |
0.72 [0.61, 0.81] | ||
| Peak ankle eversion |
0.55 [0.53, 0.72] | 0.65 [0.46, 0.72] | not available | 0.74 [0.41, 0.90] | 0.83 [0.75, 0.88] | ||
* PiG = Plug-in-Gait model; CGM2 = Conventional Gait Model 2.