Document Detail

The effect of different surfaces on biomechanical loading of shoulder and lumbar spine during pushing and pulling of two-wheeled containers.
MedLine Citation:
PMID:  12009123     Owner:  NLM     Status:  MEDLINE    
Seven waste collectors pushed and pulled a two-wheeled container on three different surfaces: flagstones, paving stones, grass. Net torques at the shoulder joint and the lumbar spine as well as the compression and shear forces in the lumbar spine at the L4/L5 level were calculated for the tilting, initial and sustained phases. The lumbar spine compression force was below 1800N and the shear force was below 200 N in all situations. The shoulder torque when pulling with one hand was up to 80 N m. The container weight affected the magnitude of the push/pull forces and the load on the shoulders but not the load on the lumbar spine. The type of surface affected the magnitude of the push/pull forces during initial and sustained phases, and affected the load on the shoulder in the sustained phase. However, it did not affect the compression in the lumbar spine.
Bjarne Laursen; Bente Schibye
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Publication Detail:
Type:  Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Applied ergonomics     Volume:  33     ISSN:  0003-6870     ISO Abbreviation:  Appl Ergon     Publication Date:  2002 Mar 
Date Detail:
Created Date:  2002-05-14     Completed Date:  2002-11-13     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0261412     Medline TA:  Appl Ergon     Country:  England    
Other Details:
Languages:  eng     Pagination:  167-74     Citation Subset:  IM    
National Institute of Public Health, Copenhagen, Denmark.
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MeSH Terms
Analysis of Variance
Lumbar Vertebrae / physiology*
Muscle, Skeletal / physiology
Musculoskeletal Diseases / prevention & control*
Occupational Diseases / prevention & control*
Shoulder Joint / physiology*
Surface Properties
Task Performance and Analysis
Videotape Recording
Weight-Bearing / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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