Table 1.
ICCs for between-day, within-day and calibration reliability of Xsens-based lower extremity joint angles, as well as running speed and stride frequency during running on an asphalt and woodchip surface. Orange, yellow, light green, and dark green coloring indicate poor, moderate, good, and excellent reliability according to Koo and Li [28].
| Grand Mean 1 (deg) |
Between-Day Reliability | Within-Day Reliability | Calibration Reliability | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Group | Variable | ICC Median [Range] | ICC Median [Range] | ICC Median [Range] | |||||
| Asphalt | Woodchip | Asphalt | Woodchip | Asphalt | Woodchip | Asphalt | Woodchip | ||
| Hip | Initial hip flexion (IHF) |
34.77 | 37.02 | 0.92 [0.89, 0.95] | 0.96 [0.83, 0.96] | 0.98 [0.95, 0.98] | 0.98 [0.91, 0.99] | 0.97 [0.96, 0.99] | 0.97 [0.96, 0.98] |
| Initial hip ab-/adduction (IHA) |
−0.15 | 0.38 | 0.52 [0.44, 0.68] | 0.49 [0.29, 0.62] | 0.96 [0.87, 0.98] | 0.94 [0.86, 0.99] | 0.91 [0.83, 0.94] | 0.93 [0.77, 0.99] | |
| Peak hip adduction (PHA) |
−9.42 | −8.00 | 0.83 [0.70, 0.85] | 0.74 [0.63, 0.77] | 0.97 [0.92, 0.99] | 0.96 [0.74, 0.99] | 0.89 [0.87, 0.95] | 0.96 [0.87, 0.97] | |
| Knee | Initial knee flexion (IKF) |
7.53 | 12.18 | 0.92 [0.90, 0.95] | 0.92 [0.89, 0.96] | 0.97 [0.96, 0.98] | 0.97 [0.95, 0.99] | 0.99 [0.99, 0.99] | 0.99 [0.99, 1.00] |
| Peak knee flexion (PKF) |
42.53 | 41.69 | 0.82 [0.75, 0.88] | 0.89 [0.85, 0.93] | 0.96 [0.95, 0.97] | 0.96 [0.95, 0.98] | 0.97 [0.96, 0.97] | 0.98 [0.97, 0.99] | |
| Ankle | Initial ankle dorsiflexion (IAD) |
6.83 | 5.56 | 0.90 [0.82, 0.94] | 0.88 [0.87, 0.95] | 0.97 [0.52, 0.99] | 0.98 [0.90, 0.99] | 0.97 [0.96, 0.98] | 0.96 [0.91, 0.99] |
| Peak ankle dorsiflexion (PAD) |
21.68 | 21.95 | 0.38 [0.23, 0.52] | 0.47 [−0.02, 0.49] |
0.93 [0.30, 0.99] | 0.97 [0.61, 0.99] | 0.88 [0.82, 0.97] | 0.91 [0.57, 0.93] | |
| Initial ankle inversion (IAI) |
−7.47 | −7.81 | 0.81 [0.77, 0.90] | 0.72 [0.64, 0.85] | 0.96 [0.92, 0.98] | 0.95 [0.87, 0.98] | 0.95 [0.93, 0.97] | 0.84 [0.73, 0.93] | |
| Peak ankle eversion (PAE) |
11.83 | 11.10 | 0.55 [0.53, 0.72] | 0.65 [0.46, 0.72] | 0.97 [0.94, 0.98] | 0.97 [0.92, 0.98] | 0.94 [0.89, 0.96] | 0.84 [0.77, 0.94] | |
|
Spatio-
tem-poral |
Running speed (RS) |
3.47 | 3.38 | 0.93 [0.84, 0.95] | 0.93 [0.76, 0.96] | 0.94 [0.84, 0.97] | 0.97 [0.90, 0.98] | not applicable | |
| Stride frequency (SF) |
1.40 | 1.39 | 0.88 [0.81, 0.88] | 0.73 [0.55, 0.87] | 0.93 [0.90, 0.95] | 0.89 [0.73, 0.95] | |||
1 Grand mean represents the average variable across the first run on each testing day and across all participants.