Table 1.
Influence of the four input parameters on geometric kinematic parameters.
| Parameter | Leg | α Speed [m/s] mean ± s.d. | β Species [Cf, Fp] mean ± s.d. | γ Head width [mm] mean ± s.d. | δ Inclination [°]mean ± s.d. | ε Intercept mean ± s.d. | log-likelihood |
| Step length(2) [mm] | f(3) | 29.8 ± 1.4****(1) | -0.51 ± 0.22* | 0.55 ± 0.34n.s. | -0.005 ± 0.003n.s.(2) | 3.96 ± 0.77**** | -1322 |
| m(3) | 28.7 ± 1.2**** | -0.50 ± 0.20* | 0.85 ± 0.30** | -0.004 ± 0.003n.s.(2) | 3.53 ± 0.68**** | -1467 | |
| h(3) | 29.7 ± 1.2**** | -0.33 ± 0.20t. | 0.72 ± 0.30* | -0.006 ± 0.003*(2) | 3.55 ± 0.69**** | -1424 | |
| Step length [mm] | f | 30.1 ± 1.4**** | -0.46 ± 0.22* | 0.57 ± 0.34t. | -0.0005 ± 0.0019n.s. | 3.67 ± 0.76**** | -1324 |
| m | 29 ± 1.3**** | -0.45 ± 0.2* | 0.87 ± 0.3** | -0.0002 ± 0.0017n.s. | 3.29 ± 0.68**** | -1469 | |
| h | 30.1 ± 1.3**** | -0.27 ± 0.2n.s. | 0.74 ± 0.31* | -0.0007 ± 0.0017n.s. | 3.21 ± 0.69**** | -1427 | |
| AEP [mm] (cranial) | f | 3.99 ± 1.07*** | -0.74 ± 0.16**** | 0.58 ± 0.25* | 0 ± 0.0014n.s. | 4.23 ± 0.56**** | -1459 |
| m | 3.13 ± 1.2** | 0.38 ± 0.18* | 0.47 ± 0.27t. | -0.0002 ± 0.0015n.s. | 0.65 ± 0.61n.s. | -1653 | |
| h | 0.1 ± 1.09n.s. | 1.78 ± 0.17**** | -0.33 ± 0.25n.s. | -0.0019 ± 0.0014n.s. | -4.05 ± 0.57**** | -1446 | |
| AEP [mm] (distal) | f | -0.6 ± 0.81n.s. | -1.18 ± 0.12**** | -0.07 ± 0.18n.s. | -0.0022 ± 0.001* | 2.9 ± 0.41**** | -1309 |
| m | 3.02 ± 0.83*** | -2.02 ± 0.13**** | 0.16 ± 0.2n.s. | 0.0001 ± 0.0011n.s. | 5.39 ± 0.45**** | -902 | |
| h | 0.86 ± 0.8n.s. | -1.19 ± 0.12**** | 0.3 ± 0.19n.s. | 0.0011 ± 0.0011n.s. | 3.39 ± 0.42**** | -1115 | |
| PEP [mm] (cranial) | f | 0.68 ± 0.71n.s. | -0.81 ± 0.11**** | 0.46 ± 0.17** | 0.0014 ± 0.0009n.s. | 1.42 ± 0.37**** | -950 |
| m | -1.83 ± 0.84* | 0.63 ± 0.13**** | 0.2 ± 0.19n.s. | 0.0001 ± 0.0011n.s. | -2.47 ± 0.43**** | -1311 | |
| h | -0.4 ± 1.03n.s. | 2.01 ± 0.16**** | -0.59 ± 0.25* | -0.0008 ± 0.0014n.s. | -7.24 ± 0.56**** | -1104 | |
| PEP [mm] (distal) | f | -1.44 ± 0.74t. | -1.4 ± 0.11**** | -0.06 ± 0.17n.s. | -0.0031 ± 0.001** | 3.1 ± 0.38**** | -1182 |
| m | 4.09 ± 0.82**** | -1.68 ± 0.13**** | 0.23 ± 0.2n.s. | 0.0009 ± 0.0011n.s. | 4.86 ± 0.44**** | -961 | |
| h | -0.29 ± 0.86n.s. | -1.45 ± 0.13**** | 0.28 ± 0.2n.s. | 0.0005 ± 0.0011n.s. | 3.71 ± 0.45**** | -1289 | |
(1)) Levels of significance: **** p < 0.0001; *** p < 0.001; ** p < 0.01; * p < 0.05; t. p < 0.1; n.s. p ≥ 0.1.
(2)) absolute values.
(3)) f: front, m: middle, h: hind.
Each line represents one statistic model. The output parameter is given in via the two left columns – e.g. step length of the front leg. The values given in the columns of the four input parameters speed, species, head width, and inclination represent the strength of their influence on the variation of the output parameter. The statistic significance reflects upon the validity of the fit. (Input parameters: 258 degrees of freedom, intercept: 613 degrees of freedom)