Electromyographic fatigue threshold of the biceps brachii muscle during dynamic contraction
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Data
2005-04-01
Autores
Oliveira, Anderson de Souza Castelo [UNESP]
Gonçalves, M. [UNESP]
Cardozo, A. C. [UNESP]
Barbosa, F. S S [UNESP]
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Resumo
The purpose of this study was to identify the Electromyographic Fatigue Threshold (EMG FT) of the biceps brachii muscle bilaterally during the elbow flexion in tests performed in different times: 30 second test, 1 minute test and fatiguing test, in concentric (CC) and eccentric (EC) phases. Nine healthy young men performed the elbow flexion with loads corresponding at 25%, 35% and 45% of the one repetition maximum (1-RM) in separate days. The results indicated that the test applied for the biceps brachii muscle during elbow flexion induced a progressive increment of EMG activity with time indicating muscle fatigue and allowed the identification of the EMG FT. The three tests presented no difference of EMG FT between CC and EC phases bilaterally.
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Palavras-chave
Biceps brachii, Dynamic contractions, Electromyography fatigue threshold, Muscle fatigue, adult, biceps brachii muscle, elbow flexion, electromyogram, electromyographic fatigue threshold, human, human experiment, male, muscle contraction, muscle exercise, muscle fatigue, normal human, weight bearing, Adult, Arm, Electromyography, Exercise Tolerance, Humans, Isotonic Contraction, Male, Muscle Fatigue, Muscle, Skeletal, Reference Values, Weight Lifting
Como citar
Electromyography and Clinical Neurophysiology, v. 45, n. 3, p. 167-175, 2005.