Table 1. Differences between national and international level judokas for trunk stability parameters obtained during sudden loading and sitting protocols and trunk isokinetic strength and endurance.
| Protocols | Variables | National (n = 14) | International (n = 11) | F | p | ||
|---|---|---|---|---|---|---|---|
| Sudden loading protocol | θmax | Anterior* | 0.0981 ± 0.0184 | 0.0850 ± 0.0115 | 4.921 | .037 | .183 |
| Lateral | 0.0685 ± 0.0154 | 0.0642 ± 0.015 | .482 | .494 | .021 | ||
| Posterior | 0.1990 ± 0.0224 | 0.1994 ± 0.0152 | .001 | .973 | .000 | ||
| K | Anterior | 1364.9 ± 342.9 | 1783.6 ± 662.8 | 4.194 | .052 | .154 | |
| Lateral | 1092.5 ± 343.8 | 1189.6 ± 379.8 | .448 | .510 | .019 | ||
| Posterior | 584.2 ± 104.2 | 587.7 ± 155.6 | .005 | .946 | .000 | ||
| β | Anterior | 334.7 ± 87.9 | 448.5 ± 192.0 | 3.906 | .060 | .145 | |
| Lateral | 687.5 ± 336.7 | 869.5 ± 336.7 | 2.576 | .122 | .101 | ||
| Posterior | 100.9 ± 32.1 | 77.3 ± 38.2 | 2.848 | .105 | .110 | ||
| Sitting protocol | MRE | SSNF | 0.99 ± 0.36 | 0.98 ± 0.39 | .007 | .936 | .000 |
| SSWF | 0.76 ± 0.48 | 0.74 ± 0.23 | .023 | .882 | .001 | ||
| SSML | 2.38 ± 0.78 | 2.31 ± 0.41 | .073 | .789 | .003 | ||
| SSAP | 2.17 ± 0.44 | 2.13 ± 0.39 | .052 | .822 | .002 | ||
| SSCD | 3.42 ± 1.49 | 3.21 ± 0.68 | .176 | .679 | .008 | ||
| USNF | 5.68 ± 1.85 | 5.65 ± 1.83 | .001 | .970 | .000 | ||
| USWF | 4.87 ± 1.21 | 5.11 ± 1.56 | .185 | .671 | .008 | ||
| USML | 7.59 ± 2.19 | 7.01 ± 1.98 | .466 | .501 | .020 | ||
| USAP | 6.89 ± 1.25 | 7.11 ± 1.82 | .123 | .729 | .005 | ||
| USCD | 8.48 ± 1.61 | 8.81 ± 3.64 | .096 | .759 | .004 | ||
| Isokinetic protocol | PT | Extension* | 399.1 ± 59.6 | 460.4 ± 62.9 | 9.372 | .006 | .299 |
| Flexion* | 228.2 ± 25.0 | 212.1 ± 28.6 | 3.844 | .063 | .149 | ||
| FFR | Extension | 76.6 ± 10.6 | 70.8 ± 11.6 | 1.682 | .208 | .068 | |
| Flexion | 62.3 ± 8.4 | 65.6 ± 9.2 | .850 | .366 | .036 | ||
Independent measures ANOVA with between-subject factor with 2 levels (national and international).
* Independent measures ANCOVAs were performed using participant’s body mass as covariate.
PT = Peak torque (N*m); FFR = Final fatigue ratio (%).
θmax (rad) = Trunk angular displacement; K (N*m/rad) = Trunk stiffness coefficient; β (N*m*s/rad) = Trunk damping coefficient.
MRE = Mean radial error (mm). Trunk sitting conditions: stable sitting without feedback (SSNF); stable sitting with feedback (SSWF); stable sitting while performing medial-lateral displacements with feedback (SSML); stable sitting while performing anterior-posterior displacements with feedback (SSAP); stable sitting while performing circular displacements with feedback (SSCD); unstable sitting without feedback (USNF); unstable sitting with feedback (USWF); unstable sitting while performing medial-lateral displacements with feedback (USML); unstable sitting while performing anterior-posterior displacements with feedback (USAP); unstable sitting while performing circular displacements with feedback (USCD).