Date of Award
Doctor of Physical Therapy (DPT)
Introduction. The purpose of this case study was to examine the differences in muscle activation between the right and left sided upper trapezius, middle trapezius, lower trapezius and serratus anterior in a participant with scapular dyskinesis.
Methods. EMG activity was recorded using a Noraxon TeleMyo2400 G2 telemetry unit with a sampling rate of 1 kHz on the aforementioned muscles.
Results. In comparing UE ratios of EMG activity, it appears that the left lower trapezius exerts a significant amount more of energy than the right lower trapezius.
Conclusion. This study may demonstrate the importance of bilateral lower trapezius muscular strength training in order to counteract the anterior tilt motion performed by the serratus anterior in patients with non-symptomatic scapular dyskinesis.
Bentrup, Tyler; Flett, Byron; and Sorvig, Joshua, "EMG of serratus anterior, upper, middle, and lower trapezius during glenohumeral abduction in a patient with scapular dyskinesia: a case study" (2017). Physical Therapy Scholarly Projects. 658.