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An Instrumented Pull Test to Characterize Postural Responses
12:18

An Instrumented Pull Test to Characterize Postural Responses

Published on: April 6, 2019

Slope effect on pushing forces.

E Turpin-Legendre1, J P Meyer

  • 1INRS, Work Physiol. Lab., Vandoeuvre, France. Emmanuelle.turpin-legendre@inrs.fr

Work (Reading, Mass.)
|February 10, 2012
PubMed
Summary
This summary is machine-generated.

This study measured the forces needed to push garbage containers on slopes, finding that inclines significantly increase strain. It proposes new safety limits for workers, regardless of age or gender, to prevent heart overload during pushing tasks.

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Area of Science:

  • Occupational health and safety
  • Biomechanics
  • Ergonomics

Background:

  • Standardized pushing forces (ISO 2002) apply to horizontal ground.
  • Forces required for pushing containers on slopes are poorly investigated.
  • Increased heart rate during pushing indicates potential cardiac strain.

Purpose of the Study:

  • To measure the forces required to push garbage containers on horizontal and inclined grounds (0%, 4%, 11%, 16%).
  • To establish realistic and protective pushing force limits for workers on slopes.
  • To develop a simple tool for assessing risks associated with container pushing tasks.

Main Methods:

  • Experimental measurement of pushing forces on various slopes.
  • Analysis of heart rate increases as an indicator of physical exertion.
  • Development of a quasi-linear model for maximum permissible pushing forces.

Main Results:

  • Pushing forces increase significantly with ground inclination.
  • A maximum pushing force of 200 kg is proposed for 0% slope.
  • A maximum pushing force of 60 kg is proposed for 10% slope.

Conclusions:

  • Inclined surfaces pose a higher risk of heart overload for workers pushing heavy loads.
  • The study provides evidence-based limits to enhance worker safety during container-pushing tasks.
  • The proposed limits are applicable to all employees, irrespective of age or gender.