Using EMG to Evaluate Ergonomic Problems among the Hand of Mouse Operators
The computer mouse is present in virtually every office environment now because of the recent adoption of the graphical user interface. The main objectives of this study were to observe the alternations of muscle fatigue resulting from the influence of continuous computer mouse using and to evaluate the applicability of surface electromyography (sEMG) in characterizing low-force dynamics contractions. There were 60 subjects recruited who didnt have musculoskeletal disorders of upper extremity in the past year. EMG was used to monitor the activities of right extensor indicis proprius, right flexor carpi ulnaris, right middle deltoid and right upper trapezius during the computer game playing. At the beginning, the end of playing game, respectively, subjects were asked to assess the upper-extremity muscles fatigue by a self-report questionnaire. The findings of study showed that all target muscles presented significant muscle fatigue by EMG measurement after two hours computer mouse use, especially for the right flexor carpi ulnaris and right upper trapezius. It was also found that the extent of self-report fatigue of all parts of upper-extremity increased. Finally, the workers would reach muscle fatigue in a daily work and computer mouse use increased risk of developing musculoskeletal disorders. According to our study, rest breaks will positively influence the pattern of muscle activation, and is a meaningful strategy for increasing comfort and health.
Muscular Fatigue Electromyography Computer mouse
Pei-Hsun Lin Shih-Pin Su Chih-Wei Lu
Graduate Institute of Occupational Safety and Health Kaohsiung Medical University Tainan Science-base industrial parks clinic
国际会议
17th World Congress on Ergonomics(第十七届国际人类工效学大会)
北京
英文
1-4
2009-08-09（万方平台首次上网日期，不代表论文的发表时间）