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Height, surface firmness, and visual reference effects on balance control.

P Simeonov1, H Hsiao

  • 1National Institute for Occupational Safety and Health, Division of Safety Research, Morgantown, West Virginia 26505-2888, USA. psimeonov@cdc.gov

Injury Prevention : Journal of the International Society for Child and Adolescent Injury Prevention
|September 22, 2001
PubMed
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Construction workers

Area of Science:

  • Occupational health and safety
  • Biomechanics
  • Human factors engineering

Background:

  • Construction work often involves working at heights and on unstable surfaces.
  • Maintaining balance is crucial for preventing falls in the construction industry.

Purpose of the Study:

  • To examine how height, surface type, and visual cues impact the standing balance of construction workers.
  • To identify environmental factors contributing to balance instability in construction settings.

Main Methods:

  • A controlled laboratory study involving 24 construction workers.
  • Participants performed standing balance tasks at various heights (ground, 3m, 9m) on firm and deformable surfaces.
  • Visual references were manipulated (included/excluded). Balance was assessed using force platform measurements of center of pressure (sway parameters).

Related Experiment Videos

Main Results:

  • Increased height significantly worsened all measured sway parameters, especially when visual references were absent.
  • Deformable surfaces exacerbated the negative effects of height on balance.
  • Excluding close visual references led to a dramatic increase in sway at height on deformable surfaces.

Conclusions:

  • Working at elevated heights and on unstable surfaces compromises construction workers' balance.
  • These conditions are associated with a higher risk of fall incidents.
  • The presence of close visual references significantly improves the ability to maintain standing balance.