Lower Trapezius (Trap Asc R)
The M. Trapezius Pars Ascendens (Lower Trapezius) is a muscle of the shoulder region. It is responsible for depression and upward rotation of scapula, retraction. This muscle is one of 26 with official SENIAM-recommended surface EMG electrode placement. This page documents the exact electrode position, anatomical attachments and a standardized test movement based on Hermens et al. (2000).
Depression and upward rotation of scapula, retraction
2/3 on line from trigonum spinae to T8
Orientation: Toward trigonum spinae–Th8
Hermens HJ, Freriks B, Disselhorst-Klug C, Rau G. Development of recommendations for SEMG sensors and sensor placement procedures. J Electromyogr Kinesiol. 2000;10(5):361-74.
Based on SENIAM recommendations (Hermens et al. 2000). Not an official SENIAM product. See all references \u2192
Raise arm overhead, scapula depresses downward-medially
Common use cases for surface EMG measurement of the M. Trapezius Pars Ascendens:
2/3 on line from trigonum spinae to T8. Orientation: Toward trigonum spinae–Th8. Based on the official SENIAM recommendations (Hermens et al. 2000).
Raise arm overhead, scapula depresses downward-medially. This movement is part of the SENIAM protocol for standardized contraction verification.
Yes. The M. Trapezius Pars Ascendens is one of 26 muscles for which the SENIAM project has published official surface EMG electrode placement recommendations.
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