TY - JOUR
T1 - On the behavior of surface electromyographic variables during the menstrual cycle
AU - Soares, Fabiano Araujo
AU - Salomoni, S.E.
AU - Veneziano, Wilson Henrique
AU - De Carvalho, Joao Luiz Azevedo
AU - Nascimento, Francisco Assis de Oliveira
AU - Pires, Kenia Fonseca
AU - Da Rocha, Adson Ferreira
N1 - MEDLINE® is the source for the MeSH terms of this document.
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=79954592032&partnerID=8YFLogxK
U2 - 10.1088/0967-3334/32/5/004
DO - 10.1088/0967-3334/32/5/004
M3 - Journal article
AN - SCOPUS:79954592032
SN - 0967-3334
VL - 32
SP - 543
EP - 557
JO - Physiological Measurement
JF - Physiological Measurement
IS - 5
ER -