Authors
Jawad Hussain, Kenneth Sundaraj, Indra Devi Subramaniam, Chee Kiang Lam
Publication date
2019
Journal
Journal of Musculoskeletal & Neuronal Interactions
Volume
19
Issue
3
Pages
276
Publisher
International Society of Musculoskeletal and Neuronal Interactions (ISMNI)
Description
Objective:
The objective of this study was to investigate fatigue in the three heads of the triceps brachii (TB) muscle using surface electromyography (sEMG) obtained at 30%, 45% and 60% of maximal voluntary contraction (MVC).
Methods:
Twenty-five subjects performed isometric elbow extension until failure, and the rate of fatigue (ROF), time to fatigue (TTF) and normalized TTF (NTTF) were statistically analysed. Subsequently, the behaviour of root-mean-square (RMS), mean-power frequency (MPF) and median-power frequency (MDF) under pre-, onset-and post-fatigue conditions were compared.
Results:
The findings indicated that, among the heads, ROF was statistically significant at 30% and 45% MVC (P< 0.05) but TTF and NTTF at all intensities was statistically insignificant (P> 0.05). For every head, only TTF was statistically significant (P< 0.05) at different intensities. MPF and MDF under pre-, onset-and post …
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Scholar articles
J Hussain, K Sundaraj, ID Subramaniam, CK Lam - Journal of Musculoskeletal & Neuronal Interactions, 2019