Table 3.
Changes in excitability indices following maximal voluntary contraction (expressed as a ratio of post-/pre-MVC).
| Normal |
CIDP |
SBMA |
||
|---|---|---|---|---|
| (n = 16) | (n = 17) | (n = 14) | ||
| Excitability measurements | ||||
| Threshold | 1.17 (0.024) | 1.12 (0.027) | 1.18 (0.038) | |
| Strength-duration time constant | 0.95 (0.014) | 0.90 (0.023) | 0.95 (0.026) | |
| Depolarizing threshold electrotonus (100 ms) | 1.09 (0.013) | 1.11 (0.017) | 1.14 (0.028) | |
| Hyperpolarizing threshold electrotonus (100 ms) | 1.13 (0.024) | 1.06 (0.012) * | 1.14 (0.024) | |
| Superexcitability | 1.17 (0.076) | 1.27 (0.16) | 1.47 (0.20) | |
Data are presented as mean (SEM). *p < 0.05, compared to normal.