The effect of voluntary contraction of F wave persistence (median nerve)
| Patient No | APB strength2-150 | Amplitude of distal CMAP (mV) | F wave persistence (%) | ||||
|---|---|---|---|---|---|---|---|
| At rest | During voluntary contraction | ||||||
| 5 | 3 | 9.6 | 22 | 90 | |||
| 6 | 3 | 8.1 | 15 | 57 | |||
| 7 | 1 | 9.7 | 13 | 9 | |||
| 8 | 2 | 8.7 | 0 | 0 | |||
APB =abductor pollicis brevis; CMAP=compound muscle action potential.
↵2-150 On the MRC scale.