期刊
APPLIED ERGONOMICS
卷 40, 期 5, 页码 936-942出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.apergo.2009.01.006
关键词
Ergonomic aid; Electromyography; Manual materials handling
资金
- Natural Sciences and Engineering Research Council
- Ontario Workplace Safety and Insurance Board [WSIB 07117]
The purpose of this study was to investigate the effectiveness and user acceptability of a Personal Lift-Assist Device (PLAD) at an automotive manufacturing facility, with operators who perform an on-line assembly process requiring forward bending and static holding. Surface EMG data were collected at six sites on the low back and abdomen, and an accelerometer was used to measure trunk inclination. Use of the PLAD significantly reduced the thoracic and lumbar erector spinae activity and EMC-predicted compression at the 10th, 50th, and 90th APDF percentile levels (p <= 0.05), without significantly increasing rectus abdominus activity or trunk flexion. Similarly, ratings of perceived exertion were found to be significantly lower when wearing the PLAD (p = 0.006). Subjective opinions were positive, with 8/10 subjects indicating they would wear the device everyday. With slight changes, workers felt that the PLAD could be beneficial at reducing forces and discomfort in similar industrial or manual materials handling tasks that place excessive physical demands on the low back. (C) 2009 Elsevier Ltd. All rights reserved.
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