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Related Experiment Video

Updated: Nov 11, 2025

Experimental Methods to Study Human Postural Control
08:12

Experimental Methods to Study Human Postural Control

Published on: September 11, 2019

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Postural control development from late childhood through young adulthood.

Adam W Kiefer1, Cortney N Armitano-Lago1, Brian L Cone2

  • 1Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.

Gait & Posture
|March 22, 2021
PubMed
Summary
This summary is machine-generated.

Children exhibit less stable postural control, with greater sway variability and less regularity in their center of pressure (COP) movements. These findings highlight developmental changes in motor control during quiet standing.

Keywords:
BalanceComplexityMotor developmentPostureRényi entropySample entropy

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Area of Science:

  • Motor control and development
  • Biomechanics
  • Human movement science

Background:

  • Stable postural control development involves changes in sway variability and motor system reorganization.
  • Understanding developmental influences on postural control is crucial.

Purpose of the Study:

  • To investigate how biomechanical and perceptual demands affect postural control during development.
  • To analyze developmental changes in postural sway using linear and nonlinear methods.

Main Methods:

  • Cross-sectional study of 48 females across three age groups (childhood, adolescence, young adulthood).
  • Center of pressure (COP) data collected during quiet stance under varying visual and foot placement conditions.
  • Linear (path length, position, speed) and nonlinear (sample entropy, Renyi entropy) analyses applied to COP data.

Main Results:

  • Late childhood group showed longer COP trajectories, faster, and more variable COP speed.
  • Children exhibited less regularity in COP sway position (Renyi entropy) compared to older groups.
  • Adolescents demonstrated greater regularity in COP speed (sample entropy) with eyes closed.

Conclusions:

  • Linear results align with previous research on postural control development.
  • Nonlinear measures offer insights into the developing control processes regulating quiet standing.
  • Developmental changes in sway characteristics reflect evolving motor control strategies.