Table 1.
Voluntary and stimulated torque, muscle activation and complexity during maximal and submaximal contractions
| Maximal test | Submaximal test | |||
|---|---|---|---|---|
| Fresh | Test end | Fresh | Task failure | |
| Variable | ||||
| Peak MVC torque (N m) | 235.6 ± 15.5 | 112.6 ± 10.9* | 237.7 ± 14.8 | 109.2 ± 9.7* |
| Potentiated doublet (N m) | 105.3 ± 7.1 | 62.4 ± 8.6* | 112.4 ± 7.9 | 70.3 ± 10.0* |
| Voluntary activation (%) | 89.8 ± 2.0 | 68.6 ± 5.6* | 90.6 ± 1.8 | 66.2 ± 4.7* |
| Electromyogram | ||||
| arEMG (%MVC) | 96.3 ± 2.5 | 73.8 ± 5.8* | 44.4 ± 5.2 | 68.5 ± 5.6* |
| Variability | ||||
| Standard deviation (N m) | 8.5 ± 1.3 | 10.2 ± 1.3 | 2.6 ± 0.2† | 7.1 ± 0.7* |
| Coefficient of variation (%) | 4.2 ± 0.5 | 8.2 ± 1.4* | 2.8 ± 0.8† | 8.1 ± 2.3* |
| Complexity statistics | ||||
| ApEn | 0.15 ± 0.02 | 0.10 ± 0.02* | 0.65 ± 0.09† | 0.24 ± 0.05* |
| SampEn | 0.14 ± 0.02 | 0.10 ± 0.02* | 0.62 ± 0.09† | 0.22 ± 0.04* |
| DFA α | 1.55 ± 0.03 | 1.63 ± 0.02* | 1.35 ± 0.04† | 1.55 ± 0.03* |
Values are mean ± SEM. *Significantly different from ‘Fresh’ in the same condition. † Significantly different from ‘Fresh’ in the maximal test (P < 0.05).