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http://hdl.handle.net/10362/1861
Título: | The friction force mouse-pad and the forearm muscles efforts (preliminary results) |
Autor: | Cabeças, José Miquel Ribeiro, Emanuel Santos |
Orientador: | Moniz, António |
Palavras-chave: | Computer mouse Forearm muscles EMG Drag-and-drop Friction force mouse-pad |
Data: | 1-Jan-2009 |
Citação: | Cabeças, J.M.; Ribeiro, E. S. (2009): "The friction force mouse-pad and the forearm muscles efforts (preliminary results)", IET Working Papers Series, 03/09, 8 pp. |
Relatório da Série N.º: | IET Working Papers Series |
Resumo: | The objective of the article is to evaluate the impact of the friction force mouse-pad in the contraction level of the forearm muscles M. extensor carpi ulnaris, M. extensor digitorum and M. extensor carpi radialis longus. A standard protocol of mouse movements was performed involving horizontal, vertical and diagonal mouse displacements drag-and-drop type. The operators were instructed to execute the protocol with their normal working speed. The movements protocol were performed by each subject (n=17) with three selected pairs mouse-pad, classified as low, medium and high friction force pairs. The mean time to execute the protocol with each mouse was ~138s. Mean values of ~13%MVE and ~17%MVE were found in the M. extensor carpi ulnaris and in the M. extensor digitorum respectively when performing the movements’ protocol. A 8.1% increase in %MVE was observed in the M. extensor digitorum and a 9.4% increase in %MVE was observed in the M. extensor carpi ulnaris when the high friction force pair was operated, relatively to the low friction force pair (p<0.05). The main preliminary conclusions of this study is that operating a high friction force mouse-pad may increase the risk to symptoms or disorders in the wrist due to an increase in the forearm muscles contraction levels, particularly during work with drawing application |
URI: | http://hdl.handle.net/10362/1861 |
ISSN: | 1646-8929 |
Aparece nas colecções: | FCT: IET - Working Paper Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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WPSeries_03_2009MiquelRibeiro.pdf | 108,9 kB | Adobe PDF | Ver/Abrir | |
WPSeries_03_2009MiquelRibeiro.pdf.txt | 16,47 kB | Text | Ver/Abrir |
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