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Effect of hand postures and object properties on forearm muscle activities using surface electromyography
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Publication Year
2020-01-02
Journal
International Journal of Occupational Safety and Ergonomics
Publisher
Taylor and Francis Ltd.
Citation
International Journal of Occupational Safety and Ergonomics, Vol.26 No.1, pp.91-100
Keyword
contributiongraspingpercentage of maximal voluntary contractionpinchingsurface electromyography
Mesh Keyword
AdultElectromyographyForearmHandHumansMaleMuscle ContractionMuscle, SkeletalPostureTask Performance and AnalysisYoung Adult
All Science Classification Codes (ASJC)
Safety, Risk, Reliability and QualitySafety ResearchPublic Health, Environmental and Occupational Health
Abstract
Introduction. The objective of this study was to measure the effect of hand postures and object properties on nine forearm muscle activities and their contribution using surface electromyography. Methods. Ten male university students participated in the experiment. The objects used were cylindrical and rectangular, with lengths and weights of 2, 4, 6 and 8 cm and 400, 800, 1400 and 1800 g. The experimenter told the participant to pick up the object using a particular hand posture, lift the object to approximately shoulder height and maintain this posture for 3 s. Results. The hand posture, object size and object weight greatly influenced the muscle activities, but the object shape did not. Pinching with two or three fingers yielded the greatest muscle activities with the 8-cm, 1800-g object. The extensor pollicis longus and flexor pollicis longus muscles exhibited the highest submaximal voluntary contraction. Conclusion. This study provides basic information about the specific activities of the forearm muscles and the effects of the hand postures and object properties on those activities.
ISSN
1080-3548
Language
eng
URI
https://aurora.ajou.ac.kr/handle/2018.oak/30303
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85050545995&origin=inward
DOI
https://doi.org/10.1080/10803548.2018.1487182
Journal URL
http://www.tandfonline.com/loi/tose20#.Vhzs5Lfos5g
Type
Article
Funding
This work was supported by a grant from National Research Foundation of Korea [NRF-2015R1C1A1A01055231] funded by the Korean government (MEST); Basic Science Research Program through National Research Foundation of Korea [No. NRF-2016R1D1A1B03934542] funded by the Ministry of Education.
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Jung, Myung-Chul Image
Jung, Myung-Chul정명철
Department of Industrial Engineering
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