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Innervation zone locations in 43 superficial muscles: Toward a standardization of electrode positioning |
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| Authors: | Matteo Beretta Piccoli MSc Alberto Rainoldi PhD Carolin Heitz PT MSc Marianne Wüthrich PT MSc Gennaro Boccia PhD Enrico Tomasoni MSc Carlo Spirolazzi PT Michele Egloff MA Marco Barbero PT |
| Affiliation: | 1. Department of Health Sciences, University of Applied Sciences and Arts of Southern Switzerland, SUPSI, , Manno, Switzerland;2. Motor Science Research Center, School of Exercise and Sport Science, S.U.I.S.M., Department of Medical Sciences, University of Turin, , Turin, Italy;3. Department of Health Sciences, University of Applied Sciences and Arts of Southern Switzerland, SUPSI, , Landquart, Switzerland;4. School of Physiotherapy, Vita‐Salute San Raffaele University, , Milan, Italy |
| 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 |
| Keywords: | electrode placement electromyography innervation zone standardization superficial muscles surface EMG |