Muscle activation in specific regions of the trapezius during modified Kendall manual muscle tests.

ABSTRACT: Manual muscle tests (MMTs) are often used when assessing shoulder pathologies. For the trapezius, individual MMTs are used to selectively test the upper (UTR), middle (MTR), and lower (LTR) trapezius regions. It is assumed that MMTs for each region preferentially recruit the corresponding muscle fibres and produce a "maximal" contraction; however, it is unknown if this is true. To determine if maximum voluntary isometric contractions (MVICs) for the upper (UT-MVIC), middle (MT-MVIC), and lower (LT-MVIC) trapezius, adapted from the Kendall MMTs, recruit the corresponding trapezius regions. Cross-Over. Laboratory. 20 young, healthy individuals. Participants performed three repetitions of each MVIC. High density surface electromyography was collected from the UTR, MTR, and LTR. Root mean squa

SUBMITTER: Henderson ZJ 

PROVIDER: S-EPMC8530421 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature