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Erschienen in: European Journal of Applied Physiology 2/2006

01.01.2006 | Original Article

Motor unit action potential rate and motor unit action potential shape properties in subjects with work-related chronic pain

verfasst von: Laura A. C. Kallenberg, Hermie J. Hermens

Erschienen in: European Journal of Applied Physiology | Ausgabe 2/2006

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Abstract

The objective of this study was to investigate differences in motor control of the trapezius muscle in cases with work-related chronic pain, compared to healthy controls. Ten cases with chronic pain and 13 controls participated in the study. Electromyographic (EMG) signals were recorded from the upper trapezius during five computer work-related tasks. Motor control was assessed using global root-mean-square value (RMSG), motor unit action potential (MUAP) rate (number of MUAPs per second, MR) and two MUAP shape parameters, i.e. root-mean-square (RMSMUAP) and median frequency (FMEDMUAP). MR and FMEDMUAP were higher for the cases than for the controls (P<0.05). RMSMUAP showed a trend for higher values in the chronic pain group (P<0.13), whereas RMSG did not show a significant difference between the groups. The higher MR, FMEDMUAP and the trend for higher RMSMUAP suggest that more high-threshold MUs contribute to low-level computer work-related tasks in chronic pain cases. Additionally, the results suggest that the input of the central nervous system to the muscle is higher in the cases with chronic pain.
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Metadaten
Titel
Motor unit action potential rate and motor unit action potential shape properties in subjects with work-related chronic pain
verfasst von
Laura A. C. Kallenberg
Hermie J. Hermens
Publikationsdatum
01.01.2006
Verlag
Springer-Verlag
Erschienen in
European Journal of Applied Physiology / Ausgabe 2/2006
Print ISSN: 1439-6319
Elektronische ISSN: 1439-6327
DOI
https://doi.org/10.1007/s00421-004-1215-1

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