Gender differences in muscle fatigue of the biceps brachii and influences of female menstrual cycle in electromyography variables

Salomoni, Sauro, Soares, Fabiano Araujo, de Oliveira Nascimento, Francisco Assis and da Rocha, Adson Ferreira (2008). Gender differences in muscle fatigue of the biceps brachii and influences of female menstrual cycle in electromyography variables. In: 2008 30Th Annual International Conference of the Ieee Engineering in Medicine and Biology Society. 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Vancouver, Canada, (2598-2601). 20-24 August 2008. doi:10.1109/IEMBS.2008.4649732


Author Salomoni, Sauro
Soares, Fabiano Araujo
de Oliveira Nascimento, Francisco Assis
da Rocha, Adson Ferreira
Title of paper Gender differences in muscle fatigue of the biceps brachii and influences of female menstrual cycle in electromyography variables
Conference name 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Conference location Vancouver, Canada
Conference dates 20-24 August 2008
Proceedings title 2008 30Th Annual International Conference of the Ieee Engineering in Medicine and Biology Society   Check publisher's open access policy
Journal name IEEE Engineering in Medicine and Biology Society. Conference Proceedings   Check publisher's open access policy
Place of Publication Piscataway, NJ, United States
Publisher IEEE
Publication Year 2008
Sub-type Fully published paper
DOI 10.1109/IEMBS.2008.4649732
Open Access Status
ISBN 9781424418145
9781424418152
ISSN 1557-170X
Start page 2598
End page 2601
Total pages 4
Language eng
Abstract/Summary Several studies report gender differences in response to fatigue. Most results suggest that females have higher muscle endurance than males. Possible explanations lie on differences in muscle mass, substrate utilization, muscle morphology and neuromuscular activation. One relevant aspect not always considered is the hormonal fluctuations during the female menstrual cycle. The present work observed eighteen healthy and untrained adults (eight males, 26.9 ± 4.0 yr and ten females, 24.0 ± 2.8 yr) performing fatiguing isometric contractions to evaluate both the influence of menstrual cycle and gender differences in fatigability. Surface electromyographic signals were recorded from the biceps brachii using a linear electrode array of eight electrodes during 90 seconds at 40% of maximal voluntary contraction. Root mean square (RMS), mean frequency (MNF) the conduction velocity (CV) values were estimated using windows of 0.5 seconds. Female subjects showed overall lower fatigability, demonstrated by the lower mean CV decrease (1.494) compared to males (1.787). However, in periods of high decreases in hormones concentrations in females (the end of both the follicular and luteal phases), higher CV decreases were observed (1.921 and 2.183). These results indicate the need of considering the effects of hormonal fluctuations in females when observing gender effects on muscle fatigue.
Keyword Cruciate Ligament Injury
Sex-Hormones
Conduction-Velocity
Contractions
Women
Recovery
Exercise
Strength
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Conference Paper
Collection: School of Health and Rehabilitation Sciences Publications
 
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