Sex‐related differences in corticospinal excitability outcome measures of the biceps brachii during a submaximal elbow flexor contraction

Autor:	Olalekan B. Olarogba, Evan J. Lockyer, Angie K. Antolinez, Duane C. Button
Jazyk:	angličtina
Rok vydání:	2024
Předmět:	motor‐evoked potential transcranial magnetic stimulation ultrasound Physiology QP1-981
Zdroj:	Physiological Reports, Vol 12, Iss 15, Pp n/a-n/a (2024)
Druh dokumentu:	article
ISSN:	2051-817X
DOI:	10.14814/phy2.16102
Popis:	Abstract The purpose of this study was to investigate the effects of sex, muscle thickness, and subcutaneous fat thickness (SFT) on corticospinal excitability outcome measures of the biceps brachii. Eighteen participants (10 males and 8 females) completed this study. Ultrasound was used to assess biceps brachii muscle thickness and the overlying SFT. Transcranial magnetic stimulation (TMS) was used to determine corticospinal excitability by inducing motor‐evoked potentials (MEPs) at eight different TMS intensities from 90% to 160% of active motor threshold (AMT) from the biceps brachii during an isometric contraction of the elbow flexors at 10% of maximum voluntary contraction (MVC). Biceps brachii maximal compound muscle action potential (Mmax) was also recorded prior to and after TMS. Males had higher (p
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