Table 5.
Fatigue-induced percentage change in peak twitch torques, evoked potentials, maximum and explosive voluntary strength, normalized muscle activity (RMS-EMG/Mmax) during iMVC and the initial phase of contraction after training for the intervention (INT) and control group (CON).
| Parameter | Post | |||
|---|---|---|---|---|
| INT | CON | Diff. (95% CI) | P | |
| PEAK TWITCH TORQUE (%) | ||||
| Supramaximal single | −0.3 ± 10.8 | −8.3 ± 10.8 | 8.0 (−1.7 to 17.7) | 0.101 |
| Supramaximal doublet | −4.7 ± 12.7 | −7.8 ± 12.7 | 3.1 (−8.4 to 14.5) | 0.581 |
| H-reflex intensity | −0.6 ± 15.1 | −2.1 ± 15.1 | 1.5 (−12.4 to 15.5) | 0.821 |
| EVOKED POTENTIALS (%) | ||||
| Hmax SOL | 10.2 ± 22.8 | 26.2 ± 22.8 | −16.0 (−36.1 to 4.0) | 0.110 |
| Mmax SOL | 10.2 ± 15.8 | 3.5 ± 15.8 | 6.7 (−7.9 to 21.3) | 0.346 |
| Hmax/Mmax SOL | 2.8 ± 23.9 | 24.0 ± 23.9 | −21.2 (−43.3 to 0.9) | 0.059 |
| V-wave SOL | −23.4 ± 19.4 | −34.7 ± 19.4 | 11.3 (−6.3 to 28.7) | 0.195 |
| Msup SOL | −6.3 ± 11.7 | −7.8 ± 11.7 | 1.5 (−8.9 to 12.0) | 0.760 |
| V/Msup SOL | −18.8 ± 28.3 | −26.6 ± 28.3 | 7.8 (−17.7 to 33.4) | 0.527 |
| Isometric maximum voluntary torque (%) | −4.4 ± 11.1 | −10.4 ± 11.1 | 6.0 (−4.1 to 16.2) | 0.229 |
| RMS-EMGiMVT/Mmax (%) | ||||
| TS | −23.8 ± 11.1 | −24.1 ± 11.1 | 0.3 (−9.7 to 10.3) | 0.953 |
| TA | −18.4 ± 16.3 | −21.4 ± 16.3 | 3.0 (−11.9 to 17.9) | 0.675 |
| RATE OF TORQUE DEVELOPMENT (%) | ||||
| 0–100 ms | −17.7 ± 16.2 | −17.7 ± 16.2 | 0.0 (−14.7 to 14.4) | 0.983 |
| 100–200 ms | −3.7 ± 12.6 | −12.7 ± 12.6 | 9.0 (−2.4 to 20.5) | 0.114 |
| RMS-EMGRTD/Mmax (%) | ||||
| TS 0–100 ms | −28.8 ± 17.2 | −24.4 ± 17.2 | −4.4 (−19.9 to 11.1) | 0.560 |
| TS 100–200 ms | −23.4 ± 17.4 | −22.9 ± 17.4 | −0.5 (−16.2 to 15.2) | 0.950 |
| TA 0–100 ms | −21.6 ± 16.1 | −23.4 ± 16.1 | 1.8 (−13.0 to 16.6) | 0.800 |
| TA 100–200 ms | −18.5 ± 17.0 | −16.6 ± 17.0 | −1.9 (−17.4 to 13.5) | 0.794 |
Diff. (95% CI), difference between means (95% confidence interval); Hmax, maximal H-reflex; Mmax, maximal M-wave; Msup, maximal M-wave during iMVC; SOL, soleus; TA, tibialis anterior. Data are adjusted means ± adjusted standard deviations.