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Updated: May 9, 2025

Computerized Dynamic Posturography for Postural Control Assessment in Patients with Intermittent Claudication
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Does work posture affect static postural stability?

Sachini N K Kodithuwakku Arachchige1, Conley Richins1, Micah Lancaster1

  • 1Department of Exercise and Nutrition Sciences, Weber State University, Ogden, Utah, USA.

Ergonomics
|May 5, 2025
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Summary

Non-ergonomic work postures cause fatigue and increase fall risk. This study found that static postural stability significantly worsens after fatigue, particularly when sitting, highlighting risks for occupational falls.

Keywords:
Fallbalanceergonomicfatigueposition

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Area of Science:

  • Occupational Health
  • Biomechanics
  • Ergonomics

Background:

  • Fatigue from non-ergonomic work postures is a primary cause of occupational falls.
  • Maintaining static postural stability is crucial for preventing workplace injuries.

Purpose of the Study:

  • To investigate the impact of four common work postures (bending, squatting, sitting, standing) on static postural stability.
  • To assess changes in postural stability following task-induced fatigue in different work postures.

Main Methods:

  • Twenty volunteers performed simulated work tasks in four postures until fatigue.
  • Static balance was measured before (PRE), immediately after (POST 1), and 10 minutes after resting (POST 2).
  • One-way Analysis of Variance (ANOVA) was used to analyze postural sway variables.

Main Results:

  • Fatigue significantly impaired static postural stability across all tested postures.
  • Postural stability was notably poorer immediately after fatigue, especially in the sitting posture.
  • A slight recovery in stability was observed after a 10-minute rest period (POST 2).

Conclusions:

  • Fatigue induced by non-ergonomic postures, particularly sitting, compromises static postural stability.
  • Findings suggest a need for work task redesign to mitigate fall risks and related injuries.
  • Interventions should focus on reducing prolonged static postures and managing fatigue in the workplace.