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Impact of different lifting height and load mass on muscle performance using periodogram


Shair, Ezreen Farina and Ahmad, Siti Anom and Abdullah, Abdul Rahim and Marhaban, Mohammad Hamiruce and Mohd Tamrin, Shamsul Bahri (2017) Impact of different lifting height and load mass on muscle performance using periodogram. Pertanika Journal of Science & Technology, 25 (spec. Jan.). pp. 1-8. ISSN 0128-7680; ESSN: 2231-8526

Abstract / Synopsis

Musculoskeletal disorders (MSDs) caused by muscle fatigue have been a major problem for industry which needs to be resolved to save costs related to human resource development (extra training and compensation). Detailed fatigue monitoring researches aimed at finding the best fatigue indices is not new although studies on the causes of fatigue can be explored further. Identification analysis is required to monitor the factors that influence muscle performance characteristic of surface electromyography (sEMG) signal. Periodogram monitoring technique applies a frequency domain signal and represents the distribution of the signal power over the frequency. It is a technique that allows the tracing of small changes in the behaviour of sEMG signal when external parameters are varied. This technique is used in this paper to monitor the sEMG signal changes in muscle performance when the lifting height and load mass are varied. The periodogram amplitude, which represents the power, increases with the rise in lifting height and load mass. From the frequency representation of the periodogram, the root mean square voltage (Vrms) is calculated where the muscle performance characteristic could be further identified. The Vrms also shows a similar trend when the lifting height and load mass are varied proving the periodogram technique is useful to monitor changes in the muscle performance during manual lifting.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Faculty of Medicine and Health Science
Publisher: Universiti Putra Malaysia Press
Keywords: Periodogram; Electromyography; Frequency representation; Manual lifting
Depositing User: Nabilah Mustapa
Date Deposited: 30 Jun 2017 17:44
Last Modified: 05 Jul 2017 12:58
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