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Pubmed for Handhelds

PUBMED FOR HANDHELDS

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  • Title: Characterization of a laboratory model of computer mouse use - applications for studying risk factors for musculoskeletal disorders.
    Author: Flodgren G, Heiden M, Lyskov E, Crenshaw AG.
    Journal: Appl Ergon; 2007 Mar; 38(2):213-8. PubMed ID: 16713986.
    Abstract:
    In the present study, we assessed the wrist kinetics (range of motion, mean position, velocity and mean power frequency in radial/ulnar deviation, flexion/extension, and pronation/supination) associated with performing a mouse-operated computerized task involving painting rectangles on a computer screen. Furthermore, we evaluated the effects of the painting task on subjective perception of fatigue and wrist position sense. The results showed that the painting task required constrained wrist movements, and repetitive movements of about the same magnitude as those performed in mouse-operated design tasks. In addition, the painting task induced a perception of muscle fatigue in the upper extremity (Borg CR-scale: 3.5, p<0.001) and caused a reduction in the position sense accuracy of the wrist (error before: 4.6 degrees , error after: 5.6 degrees , p<0.05). This standardized painting task appears suitable for studying relevant risk factors, and therefore it offers a potential for investigating the pathophysiological mechanisms behind musculoskeletal disorders related to computer mouse use.
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