The Effect of Cycle Time Reduction on Upper Trapezius Muscle in Light Assembly Task
Electronic industry is the leading industry in manufacturing sectors and one of the largest employers in Malaysia. A cross sectional survey in electronic (semi conductor) industry shows that assembly line workers had the highest prevalence of neck/shoulder and upper back pain. This study aims to elucidate the effect of cycle time reduction in Upper Trapezius muscle in simulated light assembly task using LEGOTM construction block. Eight subjects (4 males and 4 females) were participated in this study. Electromyography (EMG) activity of upper trapezius muscle was recorded for one hour. Subject used dominant hand to pick the pieces of LEGOTM and assemble with the plate. The experiment done twice (separate in one day) in different cycle time, three seconds and five seconds cycle time. Root mean Square (RMS) of EMG data was analyzed using SPSS v.15. Paired-sample T-test was used to investigate the significant effect of cycle time. The result shows that there is a significant effect of reduction cycle time in Upper Trapezius muscle in light assembly task.
Light assembly task Upper Trapezius Electromyography Cycle time
Santy S. Z. Dawal
Department of Engineering Design and ManufactureUniversity of Malaya, Kuala Lumpur 50603, Malaysia Department of Engineering Design and Manufacture University of Malaya, Kuala Lumpur 50603, Malaysia
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）