Research Article
Directional Dependence of Experimental Trunk Stiffness: Role of Muscle-Stiffness Variation of Nonneural Origin
Table 1
Experimental stiffness results.
| | | 99% CI | | 99% CI | (%) | Trunk loading (N) | μ (N/mm) () | SD (N/mm) | | μ (N/mm) () | SD (N/mm) | | |
| 350 | 2.41 | (0.11) | [2.32; 2.50] | 2.05 | (0.11) | [1.96; 2.14] | 17.5 | 483.5 | 2.54 | (0.11) | [2.45; 2.63] | 2.42 | (0.09) | [2.35; 2.49] | 4.9 | 617 | 3.00 | (0.13) | [2.90; 3.10] | 3.13 | (0.10) | [3.05; 3.21] | –4.1 | 750 | 3.19 | (0.10) | [3.10; 3.27] | 3.47 | (0.13) | [3.36; 3.58] | –8 |
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μ: mean value; SD: standard deviation; CI: confidence interval for the mean value; : . |