Investigation of the EMG-Time Relationship of the Biceps Brachii Muscle During Contractions

Ahamed, Nizam Uddin and Ahmed, Nasim and Alqahtani, Mahdi and Altwijri, Omar and Ahmad, Badlishah and Sundaraj, Kenneth (2015) Investigation of the EMG-Time Relationship of the Biceps Brachii Muscle During Contractions. Journal of Physical Therapy Science, 27 (1). pp. 39-40. ISSN 0915-5287. (Published)

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[Purpose] This study investigated the changes in the slope of EMG-time curves (relationship) at the maximal and different levels of dynamic (eccentric and concentric) and static (isometric) contractions. [Subjects and Methods] The subject was a 17 year-old male adolescent. The surface EMG signal of the dominant arm’s biceps brachii (BB) was recorded through electrodes placed on the muscle belly. [Results] The results obtained during the contractions show that the regression slope was very close to 1.00 during concentric contraction, whereas those of eccentric and isometric contractions were lower. Significant differences were found for the EMG amplitude and time lags among the contractions. [Conclusion] The results show that the EMG signal of the BB varies among the three modes of contraction and the relationship of the EMG amplitude with a time lag gives the best fit during concentric contraction.

Item Type: Article
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Faculty/Division: Faculty of Manufacturing Engineering
Depositing User: Dr. Nizam Uddin Ahamed
Date Deposited: 06 Feb 2015 08:01
Last Modified: 02 May 2018 02:41
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