Table 1.
Summary of reliability results for vertical hop test and free oscillation technique.
| Method | Leg | Stiffness (N/m/kg, mean ± SD) | p value | %SEM (95%CI) | ICC (95%CI) | CV (95%CI) | |
|---|---|---|---|---|---|---|---|
| Day 1 | Day 2 | ||||||
| Vertical hop test | Both | 176.4 ± 40.7 | 172.4 ± 34.1 | 0.48 | 12.39 (9.9–16.7) | 0.68 (0.43–0.84) | 21.51 (17.1–28.9) |
| Left | 175.7 ± 40.4 | 168.5 ± 34.0 | 0.43 | 14.23 (10.4–22.4) | 0.60 (0.15–0.85) | 21.71 (15.9–34.2) | |
| Right | 177.1 ± 42.3 | 176.3 ± 34.9 | 0.91 | 10.67 (7.8–16.8) | 0.79 (0.48–0.92) | 21.94 (16.1–34.6) | |
| Free oscillations, 70%MIF | Both | 412.3 ± 57.8 | 397.2 ± 67.4 | 0.22 | 11.47 (9.1–15.4) | 0.47 (0.13–0.70) | 15.51 (12.4–20.9) |
| Left | 417.8 ± 60.9 | 403.3 ± 63.4 | 0.40 | 11.18 (8.2–17.6) | 0.48 (−0.02–0.79) | 15.14 (11.1–23.9) | |
| Right | 406.9 ± 56.1 | 391.0 ± 72.8 | 0.38 | 12.16 (8.9–19.2) | 0.47 (−0.03–0.79) | 16.29 (11.9–25.7) | |
| Free oscillations, 20 kg | Both | 440.6 ± 84.8 | 428.0 ± 70.4 | 0.37 | 12.31 (9.8–16.5) | 0.54 (0.23–0.75) | 17.94 (14.3–24.1) |
| Left | 448.3 ± 104.1 | 451.8 ± 81.9 | 0.89 | 15.23 (11.2–24.0) | 0.49 (0.00–0.80) | 20.81 (15.2–32.8) | |
| Right | 432.8 ± 62.6 | 404.3 ± 48.6 | 0.02 | 7.38 (5.4–11.6) | 0.73 (0.36–0.90) | 13.39 (9.8–21.1) | |
Abbreviations: CI = confidence interval; CV = coefficient of variation; ICC = intra-class correlation; MIF = maximum isometric force; SEM = standard error of the mean.