Table 2.
Summary of the changes in vertical component of the ground reaction forces (vGRF) in the eight anatomical regions of the feet during linear and curved trajectories
| Region | vGRF (N) | vGRF %BW | ||||
|---|---|---|---|---|---|---|
| Linear | Foot-in | Foot-out | Linear | Foot-in | Foot-out | |
| Hallux | 230.5in | 176.6a | 229.9 | 40.5in | 31.0a | 40.4 |
| 7.6 | 7.1 | 9.0 | 1.2 | 1.2 | 1.5 | |
| Lateral Toes | 125.1in | 98.4 | 114.4 | 22.2in | 17.4 | 20.2 |
| 6.6 | 6.1 | 6.6 | 1.2 | 1.1 | 1.2 | |
| I Metatarsal Head | 158.5 | 133.9a | 161.6 | 27.8 | 23.3a | 28.5 |
| 9.2 | 7.9 | 9.4 | 1.6 | 1.3 | 1.7 | |
| II-V Metatarsal Heads | 279.9out | 285.6a | 252.7 | 48.2out | 49.5a | 43.4 |
| 12.1 | 11.0 | 12.4 | 1.4 | 1.4 | 1.6 | |
| Medial Arch | 18.0 | 24.1 | 18.3 | 3.1 | 4.2 | 3.2 |
| 2.5 | 3.6 | 2.7 | 0.4 | 0.7 | 0.5 | |
| Lateral Arch | 89.3 | 109.1 | 102.2 | 15.7 | 19.0 | 18.0 |
| 6.6 | 6.5 | 6.8 | 1.2 | 1.0 | 1.2 | |
| Medial Heel | 239.5out | 230.8a | 177.5 | 42.0out | 40.6a | 31.1 |
| 9.0 | 7.7 | 7.6 | 1.4 | 1.3 | 1.1 | |
| Lateral Heel | 363.2in | 298.9a | 345.3 | 63.2in | 51.8a | 60.1 |
| 11.6 | 11.0 | 11.9 | 1.3 | 1.2 | 1.6 | |
Average values (± SE) from left and right feet. Foot-In and Foot-Out correspond respectively to the inner outer foot during curved walking. vGRF is represented as absolute values, normalized to body weight (%BW).
out, denotes a significant difference between linear foot and foot-Out (p<0.05). in, denotes a significant difference between linear foot and foot-In (p<0.05). a, denotes a significant difference between Foot-In and Foot-Out (p<0.05).