The weight of computer mouse affects the wrist motion and forearm muscle activity during fast operation speed task

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• 作者：Han-Ming Chen (1)
  Chang-Sian Lee (1)
  Chih-Hsiu Cheng (23) chcheng@mail.cgu.edu.tw
• 关键词：Computer mouse weight – ; Wrist posture – ; Forearm and shoulder muscle activity – ; Surface electromyography
• 刊名：European Journal of Applied Physiology
• 出版年：2012
• 出版时间：June 2012
• 年：2012
• 卷：112
• 期：6
• 页码：2205-2212
• 全文大小：477.5 KB
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• 作者单位：1. Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan, ROC2. Department of Physical Therapy and Graduate Institute of Rehabilitation Science, Chang Gung University, No. 259, Wen-Hwa 1st Rd, Kweishan, Taoyuan, Taiwan, ROC3. Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan, ROC
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Biomedicine
  Human Physiology
  Occupational and Industrial Medicine
  Sports Medicine
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1439-6327

文摘

The frequent use of the computer mouse was reported to be associated with the development of the musculoskeletal disorders in the wrist, forearm, and shoulder regions. This study was to examine the effect of the mouse weights and operation speeds on the wrist motion and muscle activity. 25 subjects (20 males and 5 females) were instructed to repetitively point-and-click the mouse between two targets displaced in the monitor with five different weighted mice (weights around 70, 100, 130, 160, and 190 g) at the fast (50 repetition/min) and slow (25 repetition/min) operation speeds. Surface electromyographic activity of the extensor carpi radialis, extensor carpi ulnaris, extensor digitorum, and upper trapezius muscles were recorded, and the electrogoniometer was used to register the wrist motions. The results showed that the maximal ulnar deviation was not significantly different among the examined conditions. The wrist movement range and the forearm muscle activities showed a V-shape tendency with the lowest value in the mouse weight of 130 g. This tendency was diminished during the slow speed tasks. The results suggested that the proper mouse weight could benefit the users in terms of increasing the movement efficiency and decreasing the muscular costs.