| On the behavior of surface electromyographic variables during the menstrual cycle. | |
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MedLine Citation:
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PMID: 21444967 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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The goal of this work is to study the behavior of electromyographic variables during the menstrual cycle. Ten female volunteers (24.0 ± 2.8 years of age) performed fatiguing isometric contractions, and electromyographic signals were measured on the biceps brachii in four phases of the menstrual cycle. Adaptations of classical algorithms were used for the estimation of the root mean square (RMS) value, absolute rectified value (ARV), mean frequency (MNF), median frequency (MDF), and conduction velocity (CV). The CV estimator had a higher (p = 0.002) rate of decrease at the end of the follicular phase and at the end of the luteal phase. The MDF (p = 0.002) and MNF (p = 0.004) estimators had a higher rate of decrease at the beginning of the follicular phase and at the end of the luteal phase. No significant differences between phases of the menstrual cycle were detected with the ARV and RMS estimators (p > 0.05). These results suggest that the behavior of the muscles in women presents different characteristics during different phases of the menstrual cycle. In particular, women were more susceptible to fatigue at the end of the luteal phase. |
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Authors:
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Fabiano Araujo Soares; Sauro Emerick Salomoni; Wilson Henrique Veneziano; Joao Luiz Azevedo de Carvalho; Francisco Assis de Oliveira Nascimento; Kenia Fonseca Pires; Adson Ferreira da Rocha |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-3-28 |
Journal Detail:
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Title: Physiological measurement Volume: 32 ISSN: 1361-6579 ISO Abbreviation: - Publication Date: 2011 Mar |
Date Detail:
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Created Date: 2011-3-29 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9306921 Medline TA: Physiol Meas Country: - |
Other Details:
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Languages: ENG Pagination: 543-557 Citation Subset: - |
Affiliation:
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Department of Electrical Engineering, University of Brasilia, Brasilia-DF, Brazil. UnB-Gama Faculty, University of Brasilia, Gama-DF, Brazil. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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