doi: 10.1016/0003-6870(93)90069-l.
A comparative study of two shovel designs
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- PMID: 15676927
- DOI: 10.1016/0003-6870(93)90069-l
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A comparative study of two shovel designs
Appl Ergon.
1993 Oct.
Abstract
In the present study a modified shovel design with two perpendicular shafts is presented. This modified, two-shaft shovel was compared with a regular shovel. The modified shovel was evaluated and tested in a controlled laboratory environment using surface electromyography recorded from the lumbar paraspinal muscles. The new shovel design was also tested in a field study using ratings of perceived exertion. The results indicate that there was a significant reduction in EMG values of the lumbar paraspinal muscles and a consistent reduction in perceived exertion ratings while the modified shovel was being used for removing dirt in digging trenches up to 90 cm in depth.
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