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Macro electromyography and motor unit number index in the tibialis anterior muscle: Differences and similarities in characterizing motor unit properties in prior polio
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Clinical Neurophysiology.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Clinical Neurophysiology.
2011 (English)In: Muscle and Nerve, ISSN 0148-639X, E-ISSN 1097-4598, Vol. 43, no 3, 335-341 p.Article in journal (Refereed) Published
Abstract [en]

Our objective was to establish the usefulness of the noninvasive method of the motor unit number index (MUNIX) in a large muscle and to study how macro electromyography (EMG) and MUNIX complement each other in describing the motor units (MUs) in prior polio. MUNIX and macro EMG were performed in 48 tibialis anterior muscles in 33 prior polio patients. In addition, the reproducibility of MUNIX was investigated. It is shown that MUNIX can be used to characterize MUs with high reproducibility, even in a large muscle. As judged by MUNIX values, the patients had a 25% reduction of motor neurons, whereas the macro EMG indicated a loss of 60% of the neurons. Macro EMG showed more pronounced changes compared with control material than the MUNIX. One of the reasons for this finding may be the difference in MU populations studied with the two methods.

Place, publisher, year, edition, pages
2011. Vol. 43, no 3, 335-341 p.
Keyword [en]
macro EMG, MUNE, MUNIX, polio, prior polio, reinnervation
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-149000DOI: 10.1002/mus.21878ISI: 000287785600005PubMedID: 21268028OAI: oai:DiVA.org:uu-149000DiVA: diva2:403627
Available from: 2011-03-14 Created: 2011-03-14 Last updated: 2017-12-11Bibliographically approved

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