Inter-Gender sEMG Evaluation of Central and Peripheral Fatigue in Biceps Brachii of Young Healthy Subjects

The purpose of the present study was to evaluate inter-arm and inter-gender differences in fractal dimension (FD) and conduction velocity (CV) obtained from multichannel surface electromyographic (sEMG) recordings during sustained fatiguing contractions of the biceps brachii. A total of 20 recreatio...

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Bibliographic Details
Published in:PloS one 2016-12, Vol.11 (12), p.e0168443-e0168443
Main Authors: Meduri, Federico, Beretta-Piccoli, Matteo, Calanni, Luca, Segreto, Valentina, Giovanetti, Giuseppe, Barbero, Marco, Cescon, Corrado, D'Antona, Giuseppe
Format: Article
Language:English
Subjects:
Adult
Analysis
Biology and Life Sciences
Conduction
Contraction
Correlation
Diagnosis
Elbow
Elbow (anatomy)
Electromyography
EMG
Exhaustion
Fatigue
Female
Females
Forensic medicine
Fractals
Gender aspects
Gender differences
Health care
Healthy Volunteers
Humans
Isometric
Laboratories
Male
Males
Medicine and Health Sciences
Metabolism
Multichannel
Muscle Contraction - physiology
Muscle fatigue
Muscle Fatigue - physiology
Muscle, Skeletal - diagnostic imaging
Musculoskeletal system
Myoelectricity
Nervous system
Physical Sciences
Physiological aspects
Physiology
Public health
Rehabilitation
Research and Analysis Methods
Sex differences
Signal Processing, Computer-Assisted
Slopes
Statistical analysis
Statistical correlation
Time Factors
Young Adult
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Summary:The purpose of the present study was to evaluate inter-arm and inter-gender differences in fractal dimension (FD) and conduction velocity (CV) obtained from multichannel surface electromyographic (sEMG) recordings during sustained fatiguing contractions of the biceps brachii. A total of 20 recreationally active males (24±6 years) and 18 recreationally active females (22±9 years) performed two isometric contractions at 120 degrees elbow joint angle: (1) at 20% maximal voluntary contraction (MVC) for 90 s, and (2) at 60% MVC until exhaustion the time to perform the task has been measured. Signals from sEMG were detected from the biceps brachii using bidimensional arrays of 64 electrodes and initial values and rate of change of CV and FD of the sEMG signal were calculated. No difference between left and right sides and no statistically significant interaction effect of sides with gender were found for all parameters measured. A significant inter-gender difference was found for MVC (p
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0168443