Symptomatic computer users show higher muscle activity amplitudes in low, median and high measures during typing and mousing tasks
Work-related Musculoskeletal Disorders (WMSD) are common problems among computer users, especially affecting the neck and upper limb regions. Studies using surface electromyography have commonly examined the amplitudes of muscle activity in terms of the amplitude probability distribution function (APDF). In occupational and ergonomic research, many studies have evaluated the muscle loading during computing tasks in terms of either the 10th％ APDF or the 50th％APDF parameters. The present study examined all 3 measures of APDF (10th, 50th％, 90th％) as well as the difference between 10th％ and 90th％ in symptomatic and asymptomatic subjects. The results showed that there were significant differences in all these measures of muscle activity with symptomatic subjects showing generally higher muscle activity amplitudes than asymptomatic individuals when they performed different typing and mousing tasks. These results have important implications for future research examining surface electromyography in ergonomic research.
Grace Szeto Leon Straker Peter O’Sullivan
The Hong Kong Polytechnic University, Hong Kong SAR, China Curtin University of Technology, Perth, Australia
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
1-5
2009-08-09（万方平台首次上网日期，不代表论文的发表时间）