Biomechanics and performance when using a standard and a vertical computer mouse

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<title>Biomechanics and performance when using a standard and a vertical computer mouse</title>
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<namePart>Quemelo, Paulo R.V.</namePart>
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<dateIssued encoding="marc">2013</dateIssued>
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<abstract displayLabel="Summary">Objective: to compare the biomechanics and performance while using a vertical computer mouse (VM) and a standard mouse (SM). Methods: muscle activation (electromyography), forearm movements (electrogoniometers), performance (Fitts' Law test) and satisfaction (questionnaire) of 16 subjects were evaluated. Results: there were significant differences between the VM and the SM, respectively, on motion (28° vs. 42° pronation, p = 0.001; 5° ulnar vs. 7° radial deviation, p = 0.016) and muscle activity (13% vs. 16% of extensor carpi activity, p = 0.006; 10% vs. 13% extensor digitorum activity, p = 0.001). VM user satisfaction was good (68); however, time to target was longer (4.2 vs. 3.4 s, p <  0.001). Conclusions: using the VM decreased wrist pronation and lowered wrist extensor muscle activity, but additional training and familiarisation time may be required to improve user performance.</abstract>
<note type="statement of responsibility">Paulo R.V. Quemeloa, Edgar Ramos Vieira</note>
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<title>Ergonomics : the international journal of research and practice in human factors and ergonomics</title>
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<publisher>Oxon [United Kingdom] : Taylor & Francis, 2010-</publisher>
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<identifier type="issn">0014-0139</identifier>
<identifier type="local">MAP20100019818</identifier>
<part>
<text>05/08/2013 Volumen 56 Número 8 - agosto 2013 , p. 1336-1344</text>
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