Table 7 Significant main effects and speed interaction effects of inertia added to the pelvis in AP direction
From: The effect of directional inertias added to pelvis and ankle on gait
Measure | Speed | X 0.7 kg | X 4.3 kg | X 10.2 kg | |
|---|---|---|---|---|---|
Energetics | |||||
Gait parameters | Stance time left [s] | 1.5 km/h | 1.43 ± 0.17 | 1.40 ± 0.16 | 1.41 ± 0.16 |
4.5 km/h | 0.74 ± 0.04 | 0.74 ± 0.03 | 0.73 ± 0.03 | ||
Joint- & Segment angles | Hip abduction RoM [deg] | 12.24 ± 2.59 | 11.84 ± 2.40* | 11.32 ± 2.27*+ | |
Hip flexion RoM [deg] | 37.04 ± 2.98 | 36.82 ± 2.54 | 36.14 ± 2.44*+ | ||
Knee flexion RoM [deg] | 61.35 ± 5.54 | 61.06 ± 4.86 | 59.93 ± 4.67 | ||
Back sagittal flexion RoM [deg] | 3.94 ± 0.96 | 4.54 ± 1.08* | 5.29 ± 1.36*+ | ||
1.5 km/h | 4.25 ± 0.97 | 4.63 ± 0.99 | 4.98 ± 0.92* | ||
4.5 km/h | 3.64 ± 1.16 | 4.45 ± 1.61* | 5.60 ± 2.07*+ | ||
(1.56) | |||||
Segment Motions | Pos pelvis AP RoM [mm] | 49.14 ± 6.05 | 46.75 ± 5.35 | 43.03 ± 5.29*+ | |
Acc pelvis AP RoM [m/s2] | 3.88 ± 0.58 | 3.56 ± 0.41 | 3.06 ± 0.33*+ | ||
(0.56) | |||||
4.5 km/h | 5.04 ± 0.80 | 4.62 ± 0.62 | 3.85 ± 0.59*+ | ||
(0.57) | |||||
Pos HAT AP RoM [mm] | 37.37 ± 4.26 | 36.10 ± 4.89 | 33.89 ± 4.76* | ||
Acc HAT AP RoM [m/s2] | 2.67 ± 0.29 | 2.55 ± 0.24 | 2.24 ± 0.14*+ | ||
(0.36) | |||||
1.5 km/h | 1.78 ± 0.28 | 1.66 ± 0.13 | 1.52 ± 0.13*+ | ||
4.5 km/h | 3.55 ± 0.38 | 3.45 ± 0.40 | 2.95 ± 0.19*+ | ||
(0.35) | |||||
EMG | Vastus lateralis - mid stance | 1.5 km/h | 0.23 ± 0.05 | 0.23 ± 0.05* | 0.22 ± 0.06 |
Vastus lateralis - terminal swing | 4.5 km/h | 0.06 ± 0.03 | 0.05 ± 0.02 | 0.06 ± 0.03* | |
Gastrocnemius medialis - mid stance | 0.13 ± 0.04 | 0.14 ± 0.04 | 0.14 ± 0.04* | ||
Soleus - mid stance | 0.13 ± 0.04 | 0.14 ± 0.04* | 0.14 ± 0.04* |