Effects of positional changes on F wave.
Supine and after standing F wave studies were performed in 22 healthy subjects, in 14 patients with L5 root compression and in 11 patients with low back pain. Unlike previous works, the latency of the F minimal wave, F maximal, F mean and F chronodispersion before and after standing are similar. It is possible that the positional changes of the F wave may be of clinical interest only in sub-groups of patients and the usefulness of further studies is stressed.
Neurological Department, Valduce Hospital, Como, Italy.
F
F
Raudino
D000200:Action Potentials / Q000502:physiology; D000293:Adolescent; D000328:Adult; D000368:Aged; D004576:Electromyography; D005071:Evoked Potentials / Q000502:physiology*; D005260:Female; D006801:Humans; D017116:Low Back Pain / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D009046:Motor Neurons / Q000502:physiology; D018482:Muscle, Skeletal / Q000502:physiology; D009408:Nerve Compression Syndromes / Q000503:physiopathology; D009431:Neural Conduction / Q000502:physiology; D010543:Peroneal Nerve / Q000502:physiology; D011187:Posture / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology; D013126:Spinal Nerve Roots / Q000503:physiopathology; D016683:Supine Position / Q000502:physiology*