Gender differences on effects of forearm rotation on compressive stiffness of flexor carpi ulnaris during submaximal handgrip contractions

Little is known about gender differences in stiffness of forearm muscles during voluntary actions. This study aimed to investigate the effect of forearm rotation on flexor carpi ulnaris (FCU) stiffness in men and women during submaximal handgrip contractions. During a single session, measurements we...

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Bibliographic Details
Published in:Journal of anatomy 2023-11, Vol.243 (5), p.886-891
Main Authors: Cruz-Montecinos, Carlos, Antúnez-Riveros, Marcela Andrea, Tapia, Claudio, Díaz, Fernando, Paulsen-Donoso, Tomás, Zunino-Gomez, Jose Pablo, Núñez-Cortés, Rodrigo, Andersen, Lars Louis, Mendez-Rebolledo, Guillermo, Calatayud, Joaquín
Format: Article
Language:English
Subjects:
Elbow
Forearm
Gender
Gender differences
Muscles
Sex differences
Women
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Summary:Little is known about gender differences in stiffness of forearm muscles during voluntary actions. This study aimed to investigate the effect of forearm rotation on flexor carpi ulnaris (FCU) stiffness in men and women during submaximal handgrip contractions. During a single session, measurements were made on 20 young participants (9 females). Two positions of the forearm were compared in random order with the elbow flexed 90 degrees: (i) neutral position and (ii) maximal supination. In each position, participants performed two submaximal handgrip contractions at 25% and 50% of maximal voluntary contraction, while compressive stiffness was collected using a hand myometer (MyotonPRO). A mixed repeated measurement ANOVA was applied to assess the interaction between gender, forearm position, and contraction intensity. The FCU stiffness is affected by handgrip contraction intensity (p 
ISSN:0021-8782
1469-7580
DOI:10.1111/joa.13914