Journal of the Ergonomics Society of Korea (대한인간공학회지)

Ergonomics Society of Korea (대한인간공학회)
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The Effect of Noise and Background Music on the Trunk Muscle Fatigue during Dynamic Lifting and Lowering Tasks

들기/내리기 작업 시 소음과 배경음악이 몸통근육 피로도에 미치는 영향

  • Kim, Jung-Yong (Department of Information and Industrial Engineering, Hanyang University) ;
  • Shin, Hyun-Joo (Department of Safety Engineering, Korea Industrial Safety Association) ;
  • Lee, In-Jae (User Interface Engineering, U2 System)
  • Published : 2008.09.01
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Abstract

The purpose of this study was to define the effects of noise and background music on the trunk muscle fatigue during dynamic lifting and lowering tasks. Six healthy male subjects with no prior history of low back disorders participated in this study. The participants were exposed to two levels of background noise such as 40dB noise and 90dB noise and three levels of background music such as no music, slow music, and fast music. Six different combinations of background noise and background music were played while the participants were performing the lifting task at 15% level of Maximum Voluntary Contraction. Electromyography signals from six muscles were collected and fatigue levels were analyzed quantitatively. In results, the 90dB noise increased trunk muscle fatigue and slowed down the recovery. The trunk muscle fatigue was the lowest when the fast music was played for as background. After recovery, the 90dB noise increased trunk muscle fatigue. The trunk muscle fatigue was the lowest when the slow music was played for as background. The results can be useful to manage the cumulative fatigue of trunk muscles due to background noise and music during repetitive lifting and lowering tasks in industry.

Keywords

References

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