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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

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

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Autor(es):
Quemelo, Paulo R. V. [1] ; Vieira, Edgar Ramos [2]
Número total de Autores: 2
Afiliação do(s) autor(es):
[1] Univ Franca, Dept Phys Therapy, Franca - Brazil
[2] Florida Int Univ, Dept Phys Therapy, Miami, FL 33199 - USA
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: ERGONOMICS; v. 56, n. 8, p. 1336-1344, AUG 1 2013.
Citações Web of Science: 8
Resumo

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 degrees vs. 42 degrees pronation, p=0.001; 5 degrees ulnar vs. 7 degrees 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. 3.4s, 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. Practitioner Summary: Using a vertical mouse can decrease the exposure to biomechanical risk factors for computer mouse use-related musculoskeletal disorders. Using a vertical computer mouse resulted in less wrist pronation and lower wrist extensor muscle activity. But, training and familiarisation are required. (AU)

Processo FAPESP: 11/20011-1 - Avaliação biomecânica de um protótipo de mouse ergonômico
Beneficiário:Paulo Roberto Veiga Quemelo
Modalidade de apoio: Bolsas no Exterior - Pesquisa