TABLE 3.
Test-retest reproducibility of morphological, mechanical and material tendon properties.
| Variable | CV (%) | Typical error (95% CI) | ICC (95% CI) |
|---|---|---|---|
| PT length (mm) | 1.4 | 0.654 (0.432–1.330) | 0.986 (0.924–0.998) |
| Mean CSA (mm2) | 1.6 | 1.566 (1.035–3.187) | 0.984 (0.912–0.997) |
| Tendon force (N) | 3.9 | 154 (102–314) | 0.991 (0.950–0.998) |
| Loading rate (Nm·s−1) | 8.0 | 3.516 (2.325–7.157) | 0.951 (0.745–0.991) |
| Stiffness (N·mm−1) | 5.6 | 131 (86–266) | 0.964 (0.806–0.994) |
| Young’s modulus (GPa) | 5.0 | 0.057 (0.038–0.117) | 0.921 (0.618–0.986) |
| Stress (MPa) | 4.1 | 1.771 (1.171–3.605) | 0.980 (0.889–0.996) |
| Elongation (mm) | 2.5 | 0.103 (0.068–0.210) | 0.965 (0.815–0.994) |
| Strain (%) | 4.2 | 0.354 (0.234–0.721) | 0.966 (0.819–0.994) |
| Hysteresis (%) | 14.0 | 2.03 (1.343–4.134) | 0.902 (0.543–0.982) |