Upper Trapezius (Trap Desc R)
The M. Trapezius Pars Descendens (Upper Trapezius) is a muscle of the head & neck region. It is responsible for elevation of scapula, lateral flexion of cervical spine, head extension. 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).
Elevation of scapula, lateral flexion of cervical spine, head extension
50% on line from acromion to C7 spinous process
Orientation: Toward acromion–C7 line
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
Elevate shoulder against resistance (shoulder shrug)
Common use cases for surface EMG measurement of the M. Trapezius Pars Descendens:
50% on line from acromion to C7 spinous process. Orientation: Toward acromion–C7 line. Based on the official SENIAM recommendations (Hermens et al. 2000).
Elevate shoulder against resistance (shoulder shrug). This movement is part of the SENIAM protocol for standardized contraction verification.
Yes. The M. Trapezius Pars Descendens is one of 26 muscles for which the SENIAM project has published official surface EMG electrode placement recommendations.
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