Table 1. Reliability of the force–velocity relationship parameters obtained from the 6-loads free, 4-loads free, and 4-loads Smith methods.
| Method | Parameter | Session 1 | Session 2 | p | ES | SEM | CV (90% CI) | ICC (90% CI) |
|---|---|---|---|---|---|---|---|---|
| 6-loads free | F0 (N) | 850 (176) | 848 (195) | 0.803 | −0.01 | 30.7 | 3.62 (2.86, 5.01) | 0.98 (0.95, 0.99) |
| V0 (m·s−1) | 2.64 (0.22) | 2.66 (0.16) | 0.654 | 0.10 | 0.13 | 5.05 (3.99, 7.00) | 0.53 (0.19, 0.76) | |
| a (N·s·m−1) | 322 (63) | 320 (77) | 0.810 | −0.02 | 21.6 | 6.72 (5.31, 9.30) | 0.92 (0.82, 0.96) | |
| Pmax (W) | 565 (141) | 563 (134) | 0.827 | −0.01 | 27.5 | 4.88 (3.85, 6.75) | 0.96 (0.92, 0.98) | |
| 4-loads free | F0 (N) | 876 (198) | 873 (185) | 0.796 | −0.02 | 33.3 | 3.81 (3.00, 5.27) | 0.97 (0.94, 0.99) |
| V0 (m·s−1) | 2.55 (0.44) | 2.52 (0.48) | 0.812 | −0.05 | 0.27 | 10.4 (8.24, 14.5) | 0.69 (0.43, 0.85) | |
| a (N·s·m−1) | 356 (108) | 356 (88) | 0.983 | 0.00 | 51.7 | 14.5 (11.5, 20.1) | 0.75 (0.51, 0.88) | |
| Pmax (W) | 552 (135) | 550 (155) | 0.898 | −0.02 | 52.5 | 9.53 (7.52, 13.2) | 0.88 (0.76, 0.95) | |
| 4-loads Smith | F0 (N) | 900 (198) | 925 (205) | 0.073 | 0.13 | 41.8 | 4.59 (3.62, 6.35) | 0.96 (0.92, 0.98) |
| V0 (m·s−1) | 2.83 (0.30) | 2.72 (0.39) | 0.112 | −0.33 | 0.21 | 7.52 (5.94, 10.4) | 0.66 (0.37, 0.83) | |
| a (N·s·m−1) | 324 (88) | 351 (104) | 0.063 | 0.28 | 41.9 | 12.4 (9.81, 17.2) | 0.83 (0.66, 0.92) | |
| Pmax (W) | 630 (122) | 620 (125) | 0.361 | −0.08 | 31.8 | 5.10 (4.02, 7.06) | 0.94 (0.87, 0.97) |
Note:
F0, maximum force; V0, maximum velocity; a, force–velocity slope; Pmax, maximum power; SEM, standard error of measurement; CV, coefficient of variation; ICC, intraclass correlation coefficient; 90% CI, 90% confidence interval.