𝔖 Bobbio Scriptorium
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A comparative study of two shovel designs

✍ Scribed by A. Degani; S.S. Asfour; S.M. Waly; J.G. Koshy

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
628 KB
Volume
24
Category
Article
ISSN
0003-6870

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✦ Synopsis

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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