Table 1.
Test-retest reliability assessed from between visits 1 and 2 for all participants
| Variables | Visit 1 | Visit 2 | P Value | ICC | ICC95% | SEM | Grand Mean |
|---|---|---|---|---|---|---|---|
| MVIC, Nm | 186.74 ± 55.81 | 199.41 ± 52.32 | 0.244 | 0.848 | 0.546–0.951 | 17.3 | 193.1 |
| PTT, Nm | 85.29 ± 52.60 | 94.86 ± 63.41 | 0.265 | 0.923 | 0.770–0.975 | 13.25 | 90.04 |
| sEMG, µV | 814.1 ± 317.6 | 847.3 ± 297.6 | 0.531 | 0.895 | 0.677–0.966 | 81.6 | 830.7 |
| MP-P, µV | 7,662.8 ± 2378.2 | 7,450.2 ± 2500.0 | 0.709 | 0.787 | 0.321–0.932 | 920.3 | 7,556.5 |
| M wave, µV | 7,739.5 ± 2158.8 | 8,000.3 ± 1752.3 | 0.530 | 0.832 | 0.480–0.946 | 659.5 | 7,869.9 |
| V wave, µV | 3,196.8 ± 1495.9 | 2,734.4 ± 1410.6 | 0.141 | 0.818 | 0.456–0.941 | 513.3 | 2,965.6 |
| VA, % | 96.8 ± 1.8 | 97.6 ± 1.0 | 0.076 | 0.647 | 0.012–0.882 | 0.72 | 97.2 |
Values are means ± SE for n = 14 participants. ICC, intraclass correlation coefficient; MP-P, maximum peak-to-peak amplitude; MVIC, maximal voluntary isometric contraction; M wave, maximum compound muscle action potential; PTT, peak twitch torque; SEM, standard error of measurement; sEMG, normalized surface electromyography amplitude; VA, voluntary activation; V wave, maximum compound muscle action potential immediately following the superimposed doublet twitch.