- Tytuł:
- A Biomechanical Analysis of Manual Lifting Tasks Performed in Restricted Workspaces
- Autorzy:
- Elfeituri, F. E.
- Powiązania:
- https://bibliotekanauki.pl/articles/90531.pdf
- Data publikacji:
- 2001
- Wydawca:
- Centralny Instytut Ochrony Pracy
- Tematy:
-
manual lifting tasks
restricted workspaces
compression and shear forces
regression modeling
analiza biomechaniczna
podnoszenie ręczne - Opis:
- This paper describes the results of an experimental study aimed at evaluating the biomechanical effects of working in a spatially restricted environment on manual lifting tasks. The main objective of the study is to estimate the biomechanical loading (in terms of peak compression and shear forces) on the lumbar spine for the selected combinations of limited headroom heights and twisting angles. A three-dimensional dynamic biomechanical model was utilized to assess peak compression and shear forces at the L5/S1 lumbosacral joint. The results indicated that by reducing the headroom height, the participants were forced to stand with their trunks fully flexed forward which, by increasing the mechanical disadvantage at the lumbosacral disc, increased the compression forces. Both compression and shear forces were affected by the increase in twisting angle. The greater the twisting angle, the higher the compression and shear forces. Regression models were developed and validated, which demonstrated high accuracy of predicting the psychophysical and biomechanical lifting capacities.
- Źródło:
-
International Journal of Occupational Safety and Ergonomics; 2001, 7, 3; 333-346
1080-3548 - Pojawia się w:
- International Journal of Occupational Safety and Ergonomics
- Dostawca treści:
- Biblioteka Nauki
Artykuł