Table 3.
Achilles tendon biomechanical parameters descriptives and statistics
| Outcome | FH patients | CP | p-value | Statistic | Effect size |
|---|---|---|---|---|---|
| Stiffness (N/mm) | 373 ± 91 [341–405] | 396 ± 76 [368–424] | 0.282a | t=-1.09 | 0.27 |
| Young’s mod. (MPa) | 1017 ± 383 [881–1152] | 1168 ± 276 [1067–1270] | 0.075a | t=-1.8 | 0.45 |
| Peak strain (%) | 6.5 ± 1.9 [5.8–7.2] | 5.9 ± 1.7 [5.3–6.5] | 0.151b | U = 405 | 0.33 |
| Peak stress (N/mm2) | 49.6 ± 13.9 [44.7–54.5] | 54.8 ± 11.8 [50.5–59.1] | 0.113a | t=-1.6 | 0.40 |
| Peak tendon force (N) | 3559 ± 679 [3318–3800] | 3511 ± 746 [3237–3785] | 0.778a | t=-0.27 | 0.07 |
| RFD (N/sec) | 1395 ± 605 [1181–1610] | 1418 ± 562 [1213–1625] | 0.874a | t=-0.16 | 0.04 |
Group descriptives displayed as mean ± SD [95% CI]. p-values and test statistic obtained through aindependent t-tests or bMann-Whitney U tests. Effect size calculated as Cohen’s d. RFD = rate of force development