期刊
APPLIED ERGONOMICS
卷 88, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.apergo.2020.103156
关键词
Lifting; Low-back pain; Energy expenditure; Electromyography; Usability
资金
- Spark Grant Award from the Material Handling Institute (MHI)
Two passive back-support exoskeleton (BSE) designs were assessed in terms of muscular activity, energy expenditure, joint kinematics, and subjective responses. Eighteen participants (gender-balanced) completed repetitive lifting tasks in nine different conditions, involving symmetric and asymmetric postures and using two BSEs (along with no BSE as a control condition). Wearing both BSEs significantly reduced peak levels of trunk extensor muscle activity (by similar to 9-20%) and reduced energy expenditure (by similar to 8-14%). Such reductions, though, were more pronounced in the symmetric conditions and differed between the two BSEs tested. Participants reported lower perceived exertion using either BSE yet raised concerns regarding localized discomfort. Minimal changes in lifting behaviors were evident when using either BSE, and use of both BSEs led to generally positive usability ratings. While these results are promising regarding the occupational use of BSEs, future work is recommended to consider inter-individual differences to accommodate diverse user needs and preferences.
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