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Related Experiment Video

Updated: May 20, 2026

Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb
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Changes in postural sway as a function of prolonged walking.

Kathleen S Thomas1, Bonnie L VanLunen, Steven Morrison

  • 1Department of Human Movement Sciences, Old Dominion University, Norfolk, VA 23529, USA. kthomas@odu.edu

European Journal of Applied Physiology
|July 19, 2012
PubMed
Summary
This summary is machine-generated.

Faster walking speeds initially destabilize standing balance, increasing center of pressure (COP) motion. However, the postural system adapts, showing improved stability over time despite continued exertion.

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Area of Science:

  • Biomechanics
  • Human Physiology
  • Motor Control

Background:

  • Optimal postural control is essential for balance and responding to external disturbances.
  • Understanding how walking speed affects postural stability is crucial for various populations.

Purpose of the Study:

  • To examine the immediate and long-term effects of different walking speeds on standing balance and postural stability.
  • To assess the adaptability of the postural system under varying walking conditions.

Main Methods:

  • Center of pressure (COP) motion was recorded in 14 young adults.
  • Participants walked on a treadmill at preferred walking speed (PWS), 120% PWS, and 140% PWS.
  • COP variables (path length, range, SD, ApEn) were analyzed at discrete intervals.

Main Results:

  • Faster walking speeds significantly increased COP motion (path length, range, SD, ApEn) compared to pre-walking baselines.
  • A plateau effect was observed in COP range, variability, and approximate entropy over time, despite increasing physical exertion (HR, RPE).
  • Path length of COP motion decreased in later trials.

Conclusions:

  • The human postural system demonstrates rapid compensation and adaptation to the increased demands of faster walking speeds.
  • Despite sustained task demands, the body adjusts to maintain postural stability, showcasing effective motor control mechanisms.