Table 4
EMG parameters: cases versus controls
| Parameters | Cases (n=11) | Controls (n=22) | p Value | ||||||
|---|---|---|---|---|---|---|---|---|---|
| M | SD | M | SD | ||||||
| MUPs at rest: | |||||||||
| Amplitude (μV) | 473.5 | 133.9 | 521.4 | 159.8 | 0.324 | ||||
| Duration (ms) | 7.0 | 1.6 | 6.8 | 1.5 | 0.744 | ||||
| Area (μV/ms) | 447.3 | 165.7 | 524.9 | 189.6 | 0.239 | ||||
| Poly (%) | 23.1 | 11.8 | 26.1 | 11.1 | 0.484 | ||||
| No MUP | 2.1 | 0.9 | 3.0 | 0.1 | 0.019 | ||||
| FD | 1.9 | 0.8 | 1.6 | 0.2 | 0.234 | ||||
| Interference patterns: | |||||||||
| Activity (%) | 1.1 | 1.0 | 12.7 | 6.9 | <0.0001 | ||||
| NSS/s | 18.1 | 13.0 | 141.7 | 66.0 | <0.0001 | ||||
| Envelope (μV) | 574.4 | 341.0 | 1395.5 | 486.4 | <0.0001 | ||||
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MUP=Muscle unit potential; Poly=polyphasic potentials; FD=fibre density; NSS=number of short segments.
