Application of surface electromyography in diagnostics of muscles motor units dysfunction during overloading and in standing positions

• Autorzy: Huber J.
• Języki publikacji: EN

Abstrakty

EN

Surface electromyography (sEMG) recorded bilaterally starts to be applied the same frequently as invasive needle EMG in confirmation of certain muscle- or spine-related motor units disorders. In 30 patients with clinically recognized myofascial pain (bilateral trigger pointsTRPs), mean sEMG amplitude recorded from trapezius and cervical or lumbar axial muscles at rest was increased (>25 µV instead of 15 µV indicating increased tension) what in turn decreased their ability to maximal contractions. No pathology in motor transmission was found. Coexistence of characteristic spontaneous activity in needle EMG recordings with TRPs presence was observed. In 40 office-workers dysfunction of trapezius muscle was the most responsible for cervicogenic headache when recordings of sEMG were performed and again the same at rest-maximal contraction pattern of motor units dysfunction was found. Differentiation of sciatica and pseudosciatica patients with clinical examinations especially when they complain of pain during prolonged standing is difficult. However sciatica (n=11) was characterized with significant increase of mean sEMG amplitude recorded especially in distal muscles on affected side during tandem position. It was related to decrease in sEMG “fluctuations” frequency more than in pseudosciatica (n=9) patients in normal and standing positions. ENG was pathological only in sciatica patients.

• Wydawca: -
• Czasopismo: Acta Neurobiologiae Experimentalis
• Rocznik: 2013
• Tom: 73
• Numer: Suppl.1
• Opis fizyczny: p.14

Twórcy

autor

Huber J.

• Department of Pathophysiology of Locomotor Organs, University of Medical Sciences, Poznan, Poland