Activity of upper body muscles during bowing and prostration tasks in healthy subjects

Safee, M.K.M. and Wan Abas, Wan Abu Bakar and Abu Osman, Noor Azuan and Ibrahim, Fatimah (2011) Activity of upper body muscles during bowing and prostration tasks in healthy subjects. In: 5th Kuala Lumpur International Conference on Biomedical Engineering, BIOMED 2011, Held in Conjunction with the 8th Asian Pacific Conference on Medical and Biological Engineering, APCMBE 2011, 2011, Kuala Lumpur.

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Abstract

This paper investigate the activity of the neck extensors (NE), sternocleidomastoideus (SCM), trapezius (TRP), deltoid (DT), biceps brachii (BB), triceps brachii (TB), rectus abdominal (RA), and erector spine (ES) muscles in healthy subjects during bowing and prostration using surface electromyography (EMG). A group of student aged between 23 to 28 years voluntarily participated in this study. The subjects were asked to perform two types of flexion positions, namely bowing (90° forward flexion with the hands on the respective knees) and prostration (flexion with the palms of the hands and the forehead flat on the floor). The motion signals of the muscles were recorded. The finding indicated that during the bowing, there was contraction of the NE, DT, TB, and RA muscles while the muscle relaxation was found in the SCM, TRP, BB, and ES. During prostration, there was contraction at the SCM, DT, TB, and RA but muscle relaxation was found at the NE, TRP, BB, and ES. For the muscles that showed electrical activity in both the postures, the Wilcoxon Rank Sum Test showed a statistically no significant difference between bowing and prostration only for DT (p = 0.534) and but statistically significant difference for RA and TB (p<0.05). The muscle relaxation that existed at the ES showed no significant difference between bowing and prostrating (Wilcoxon Rank Sum Test, p = 0.075). This study indicates the effects of bowing and prostration on the biomechanical response of the human muscles. Muscle contraction and relaxation that occur, show an agonist-antagonist response which is good for exercise and strengthening programmers. These two movements are involved in the Muslim's prayer, called the salat. Hence, the current experiment can be taken as a pilot study on the biomechanical response of the human muscles during one's act of performing the salat. © 2011 Springer-Verlag.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Conference code: 85436 Export Date: 24 February 2014 Source: Scopus Language of Original Document: English Correspondence Address: Safee, M. K. M.; Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia; email: kkkdin85@yahoo.com References: Hamill, J., Knutzen, K.M., (2009) Biomechanical Basis of Human Movement, , 3rd ed. Philadelphia; Jenkins, D.B., (2009) Hollinshead's Functional Anatomy of the Limbs and Back, , 9th ed. 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Uncontrolled Keywords: Bowing, Electromyography, Flexion relaxation, Muscle, Prostration, Biceps brachii, Biomechanical response, Electrical activities, Healthy subjects, Human muscles, Motion signals, Muscle contractions, Muscle relaxation, Pilot studies, Statistically significant difference, Surface electromyography, Triceps brachii, Wilcoxon rank sum test, Biomechanics, Biomedical engineering, Physiological models.
Subjects: T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 09 Apr 2014 01:57
Last Modified: 07 Feb 2019 08:53
URI: http://eprints.um.edu.my/id/eprint/9472

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