Skip to main content
padlock icon - secure page this page is secure

Task selection for increased mechanical exposure variation: Relevance to job rotation

Buy Article:

$61.00 + tax (Refund Policy)

It is generally considered that variation in mechanical exposure is beneficial from the viewpoint of preventing musculoskeletal disorders. An approach to quantifying the functional similarity of manual tasks was developed and tested by using three handgrips: power grip (PG); pulp pinch (PP); lateral pinch (LP). Changes in maximal voluntary contraction (MVC) forces were measured during 15 combinations of 2-min duration, 30% MVC isometric contraction in 25 participants. Strength changes in PG were found to be substantially different from LP; when the two grips were alternated, strength dropped to 85.1% MVC whereas after PG alone, strength dropped to 59.3% MVC. The findings suggest that PG and LP are functionally different enough for their alternating use to contribute to increased exposure variation during manual activities. Statement of Relevance: The paper describes how to determine if two tasks, when performed alternately, are different enough to reduce fatigue, increase work capacity and potentially prevent musculoskeletal disorders. Better understanding of the differences between tasks has the potential to improve job design by allowing better choice of tasks that combine to define a job.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Keywords: fatigue; hand grip; mechanical exposure; pinch; working rest

Document Type: Research Article

Affiliations: 1: Department of Kinesiology, University of Waterloo, Waterloo, Canada,Institute for Work and Health, Toronto, Canada,Centre of Research Expertise for the Prevention of Musculoskeletal Disorders, University of Waterloo, Waterloo, Canada 2: Department of Kinesiology, University of Waterloo, Waterloo, Canada 3: Department of Kinesiology, University of Waterloo, Waterloo, Canada,Centre of Research Expertise for the Prevention of Musculoskeletal Disorders, University of Waterloo, Waterloo, Canada

Publication date: March 1, 2010

More about this publication?
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more