Sarcolemmal Excitability Properties of the Trapezius.

ABSTRACT:

Introduction/aims

The sarcolemma can be probed in vivo using muscle excitability recordings. These techniques have been applied to the tibialis anterior and brachioradialis muscles in healthy and diseased states. We aimed to study and validate the trapezius as a more proximal muscle to be used for myopathic conditions.

Methods

Muscle velocity recovery cycles (MVRCs) and frequency ramp recordings were performed on the trapezius of 29 healthy controls. These recordings were compared to tibialis anterior recordings from 74 healthy controls.

Results

Overall, the recorded MVRC and frequency ramp recordings were similar between the trapezius and tibialis anterior. The mean relative refractory period (MRRP) was shorter in the trapezius (3.29 vs. 3.71 ms), but this is explain

SUBMITTER: Lycett MJ 

PROVIDER: S-EPMC11887518 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature