Table 2.
Model summary for the association of absolute between-day differences in Xsens-based lower extremity joint angles with the running surface and absolute between-day differences in running speed and stride frequency. Green coloring: These models contained at least one significant coefficient (p < 0.05) of between-day differences in the respective joint angle. Grey coloring: These models did not contain a significant coefficient (p < 0.05) for the differences between the individual days in the respective joint angle.
| Group | Variable | R-Squared Marginal | Between-Day Difference in Running Speed (bspeed) (deg per m/s) |
Between-Day Difference in Stride Frequency (bSF) (deg per 1/s) |
Surface (Woodship—Asphalt, bSurface) (deg) |
|---|---|---|---|---|---|
| Hip | Initial hip flexion |
0.26 | 4.23 (3.06, 5.40) | 2.55 (−6.43, 11.54) | −0.02 (−0.41, 0.36) |
| Initial hip ab-/adduction |
0.01 | −0.69 (−2.18, 0.80) | −1.05 (−13.51, 11.40) | −0.08 (−0.53, 0.37) | |
| Peak hip abduction |
0.02 | −0.48 (−1.56, 0.60) | 4.89 (−4.20, 13.99) | 0.18 (−0.15, 0.49) | |
| Knee | Initial knee flexion |
0.01 | 0.15 (−1.25, 1.54) | 6.01 (−5.71, 17.73) | 0.01 (−0.40, 0.43) |
| Peak knee flexion |
0.06 | 0.04 (−0.99, 1.07) | 11.32 (2.71, 19.94) | −0.31 (−0.62, −0.00) | |
| Ankle | Initial ankle dorsiflexion |
0.02 | 1.03 (−0.46, 2.53) | 0.92 (−11.58, 13.41) | 0.14 (−0.30, 0.59) |
| Peak ankle dorsiflexion |
0.12 | −0.57 (−3.12, 1.99) | 52.10 (30.00, 74.19) | −0.54 (−1.28, 0.19) | |
| Initial ankle inversion |
0.03 | −0.60 (−2.25, 1.04) | 10.04 (−3.58, 23.66) | 0.35 (−0.14, 0.85) | |
| Peak ankle eversion |
0.12 | −0.34 (−2.66, 1.99) | 41.01 (21.74, 60.28) | −0.12 (−0.82, 0.58) |