Innervation zone locations in 43 superficial muscles: Toward a standardization of electrode positioning

ABSTRACT Introduction: We describe the innervation zone (IZ) location in 43 muscles to provide information for appropriate positioning of bipolar electrodes for clinical and research applications. Methods: The IZ was studied in 40 subjects (20 men and 20 women) using multichannel surface electromyog...

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Bibliographic Details
Published in:Muscle & nerve 2014-03, Vol.49 (3), p.413-421
Main Authors: Beretta Piccoli, Matteo, Rainoldi, Alberto, Heitz, Carolin, Wüthrich, Marianne, Boccia, Gennaro, Tomasoni, Enrico, Spirolazzi, Carlo, Egloff, Michele, Barbero, Marco
Format: Article
Language:English
Subjects:
Adult
electrode placement
Electrodes, Implanted - standards
Electromyography
Female
Humans
innervation zone
Isometric Contraction - physiology
Male
Muscle, Skeletal - anatomy & histology
Muscle, Skeletal - innervation
Muscle, Skeletal - physiology
Sex Factors
Standardization
superficial muscles
surface EMG
Volunteers
Young Adult
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Summary:ABSTRACT Introduction: We describe the innervation zone (IZ) location in 43 muscles to provide information for appropriate positioning of bipolar electrodes for clinical and research applications. Methods: The IZ was studied in 40 subjects (20 men and 20 women) using multichannel surface electromyography (sEMG). Signal quality was checked visually to identify motor unit action potentials and estimate muscle fiber conduction velocity. Results: Results in 33 muscles were classified as excellent or good, because it was possible to identify an area which is favorable for appropriate positioning of an electrode pair without the need to previously determine the IZ location. Conclusions: Knowledge of IZ location will increase standardization and repeatability of sEMG measures. Muscle Nerve 49:413–421, 2014
ISSN:0148-639X
1097-4598
DOI:10.1002/mus.23934