Age-related EMG responses of the biceps brachii muscle of young adults.

Although the effect of an Electromyographic (EMG) signal on the Biceps Brachii (BB) muscle is at the forefront of human movement analysis, there is limited information regarding the importance of the differences in the age-related EMG responses during contraction. The present study aimed to compare...

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Main Authors:	Ahamed, Nizam Uddin, Alqahtani, Mahdi, Rahman, Matiur
Format:	Article
Language:	English
Published:	Biomedical India 2016
Subjects:	TA Engineering (General). Civil engineering (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/13053/ http://umpir.ump.edu.my/id/eprint/13053/ http://umpir.ump.edu.my/id/eprint/13053/1/Age-related%20EMG%20responses%20of%20the%20biceps%20brachii%20muscle%20of%20young%20adults.pdf

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recordtype	eprints
spelling	ump-130532018-09-13T05:06:17Z http://umpir.ump.edu.my/id/eprint/13053/ Age-related EMG responses of the biceps brachii muscle of young adults. Ahamed, Nizam Uddin Alqahtani, Mahdi Rahman, Matiur TA Engineering (General). Civil engineering (General) Although the effect of an Electromyographic (EMG) signal on the Biceps Brachii (BB) muscle is at the forefront of human movement analysis, there is limited information regarding the importance of the differences in the age-related EMG responses during contraction. The present study aimed to compare the BB muscle activity of three different groups of young adults divided based on age and to find a relationship between surface EMG and endurance time during isometric contraction. The EMG signal was recorded in 30 healthy right-arm-dominant young male subjects during a handgrip force task. The subjects were rationally divided into one of the three age groups (ten in each group): adolescents (‘A’; aged 17.3 ± 1.4 years), vicenarians (‘V’; 24.6 ± 2.1 years), and tricenarians (‘T’; 33.2 ± 1.1 years). The muscle activation during contraction was determined as the root mean square (RMS) EMG signal normalised to the peak RMS EMG signal during a 10-s isometric contraction. The statistical analysis included linear regression to examine the relationship between the EMG amplitude and the endurance time based on five levels of contraction [60%, 70%, 80%, 90% and 100% of the maximal voluntary contraction (MVC)], repeated measures ANOVA to assess differences among the different age groups and the coefficient of variation (CoV) to investigate the steadiness of the EMG activation. The result shows that the early age groups exhibit higher and steadier muscle activity (V: 3.65 ± 0.42 mV, 11.46% and A: 3.12 ± 0.29 mV, 9.29%) compared with the elderly subjects (T: 2.78 ± 0.33 mV, 11.98%). The most important finding is that the linear slope coefficient for the EMG (amplitude) as a function of time for the muscle of the ‘V’ group (r2=0.591, P<0.05) was significantly greater compared those found for the muscles of the ‘T’ (r2=0.152, P>0.05) and ‘A’ groups (r2=0.203, P > 0.05). The results obtained in this study can be used to improve the current understanding of the mechanics and muscle functions of the BB muscle of individuals from different age groups during isometric contraction. Biomedical India 2016-07 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/13053/1/Age-related%20EMG%20responses%20of%20the%20biceps%20brachii%20muscle%20of%20young%20adults.pdf Ahamed, Nizam Uddin and Alqahtani, Mahdi and Rahman, Matiur (2016) Age-related EMG responses of the biceps brachii muscle of young adults. Biomedical Research (India), 27 (3). pp. 787-793. ISSN 0970-938X http://www.alliedacademies.org/articles/agerelated-emg-responses-of-the-biceps-brachii-muscle-of-young-adults.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TA Engineering (General). Civil engineering (General)
spellingShingle	TA Engineering (General). Civil engineering (General) Ahamed, Nizam Uddin Alqahtani, Mahdi Rahman, Matiur Age-related EMG responses of the biceps brachii muscle of young adults.
description	Although the effect of an Electromyographic (EMG) signal on the Biceps Brachii (BB) muscle is at the forefront of human movement analysis, there is limited information regarding the importance of the differences in the age-related EMG responses during contraction. The present study aimed to compare the BB muscle activity of three different groups of young adults divided based on age and to find a relationship between surface EMG and endurance time during isometric contraction. The EMG signal was recorded in 30 healthy right-arm-dominant young male subjects during a handgrip force task. The subjects were rationally divided into one of the three age groups (ten in each group): adolescents (‘A’; aged 17.3 ± 1.4 years), vicenarians (‘V’; 24.6 ± 2.1 years), and tricenarians (‘T’; 33.2 ± 1.1 years). The muscle activation during contraction was determined as the root mean square (RMS) EMG signal normalised to the peak RMS EMG signal during a 10-s isometric contraction. The statistical analysis included linear regression to examine the relationship between the EMG amplitude and the endurance time based on five levels of contraction [60%, 70%, 80%, 90% and 100% of the maximal voluntary contraction (MVC)], repeated measures ANOVA to assess differences among the different age groups and the coefficient of variation (CoV) to investigate the steadiness of the EMG activation. The result shows that the early age groups exhibit higher and steadier muscle activity (V: 3.65 ± 0.42 mV, 11.46% and A: 3.12 ± 0.29 mV, 9.29%) compared with the elderly subjects (T: 2.78 ± 0.33 mV, 11.98%). The most important finding is that the linear slope coefficient for the EMG (amplitude) as a function of time for the muscle of the ‘V’ group (r2=0.591, P<0.05) was significantly greater compared those found for the muscles of the ‘T’ (r2=0.152, P>0.05) and ‘A’ groups (r2=0.203, P > 0.05). The results obtained in this study can be used to improve the current understanding of the mechanics and muscle functions of the BB muscle of individuals from different age groups during isometric contraction.
format	Article
author	Ahamed, Nizam Uddin Alqahtani, Mahdi Rahman, Matiur
author_facet	Ahamed, Nizam Uddin Alqahtani, Mahdi Rahman, Matiur
author_sort	Ahamed, Nizam Uddin
title	Age-related EMG responses of the biceps brachii muscle of young adults.
title_short	Age-related EMG responses of the biceps brachii muscle of young adults.
title_full	Age-related EMG responses of the biceps brachii muscle of young adults.
title_fullStr	Age-related EMG responses of the biceps brachii muscle of young adults.
title_full_unstemmed	Age-related EMG responses of the biceps brachii muscle of young adults.
title_sort	age-related emg responses of the biceps brachii muscle of young adults.
publisher	Biomedical India
publishDate	2016
url	http://umpir.ump.edu.my/id/eprint/13053/ http://umpir.ump.edu.my/id/eprint/13053/ http://umpir.ump.edu.my/id/eprint/13053/1/Age-related%20EMG%20responses%20of%20the%20biceps%20brachii%20muscle%20of%20young%20adults.pdf
first_indexed	2023-09-18T22:15:13Z
last_indexed	2023-09-18T22:15:13Z
_version_	1777415292365832192

Age-related EMG responses of the biceps brachii muscle of young adults.

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