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The friction force mouse-pad and the forearm muscles efforts (preliminary results)
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Orientador(es)
Resumo(s)
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
Descrição
Palavras-chave
Computer mouse Forearm muscles EMG Drag-and-drop Friction force mouse-pad
Contexto Educativo
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.