Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Dietary Inflammatory Index and Blood Inflammatory Markers in Young Men with Different Levels of Physical Activity: A Cross-Sectional Observational Study.

International journal of molecular sciences·2026
Same author

Muscle Fatigue in Dynamic Movement: Limitations and Challenges, Experimental Design, and New Research Horizons.

Bioengineering (Basel, Switzerland)·2026
Same author

Gait and Stability Analysis of People After Osteoporotic Spinal Fractures Treated with Minimally Invasive Surgery.

Journal of functional morphology and kinesiology·2025
Same author

Comparative Analysis of Psychological Profiles and Physical Functioning in Addicted and Non-Addicted Male Prisoners: A Pilot Study.

Journal of clinical medicine·2025
Same author

Assessment of Postural Stability in Semi-Open Prisoners: A Pilot Study.

Journal of clinical medicine·2025
Same author

Determinants of 50 m Front Crawl Performance in Adolescent Non-Elite Female Swimmers: A Longitudinal Study.

Journal of functional morphology and kinesiology·2025

Related Experiment Video

Updated: Nov 27, 2025

Experimental Methods to Study Human Postural Control
08:12

Experimental Methods to Study Human Postural Control

Published on: September 11, 2019

9.9K

Nonlinear Measures to Evaluate Upright Postural Stability: A Systematic Review.

Justyna Kędziorek1, Michalina Błażkiewicz1

  • 1Akademia Wychowania Fizycznego Józefa Piłsudskiego w Warszawie, 00-809 Warszawa, Poland.

Entropy (Basel, Switzerland)
|December 3, 2020
PubMed
Summary

Nonlinear analysis reveals reduced postural stability in aging and disease. These methods quantify changes in movement system adaptability and predictability, offering new insights beyond linear biomechanics.

Keywords:
Lyapunov exponentcenter of pressurefractal dimensionsample entropy

More Related Videos

Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability
07:52

Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability

Published on: September 18, 2020

8.8K
An Instrumented Pull Test to Characterize Postural Responses
12:18

An Instrumented Pull Test to Characterize Postural Responses

Published on: April 6, 2019

11.2K

Related Experiment Videos

Last Updated: Nov 27, 2025

Experimental Methods to Study Human Postural Control
08:12

Experimental Methods to Study Human Postural Control

Published on: September 11, 2019

9.9K
Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability
07:52

Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability

Published on: September 18, 2020

8.8K
An Instrumented Pull Test to Characterize Postural Responses
12:18

An Instrumented Pull Test to Characterize Postural Responses

Published on: April 6, 2019

11.2K

Area of Science:

  • Biomechanics
  • Dynamical Systems Theory
  • Human Movement Science

Background:

  • Conventional biomechanical analyses often rely on linear mathematics, which inadequately capture the nonlinear dynamics of human movement systems.
  • Nonlinear analyses, focusing on variability, stability, complexity, and adaptability, are increasingly utilized in scientific literature.
  • Postural stability is a critical aspect of human movement, influenced by various physiological and pathological factors.

Purpose of the Study:

  • To systematically review the application of nonlinear metrics for assessing human postural stability.
  • To synthesize findings on the use of sample entropy, fractal dimension, and Lyapunov exponent in analyzing center of pressure variability.
  • To evaluate how aging, disease, and injury impact the adaptive capabilities of the movement system as reflected in nonlinear measures.

Main Methods:

  • A systematic literature review was conducted for papers published between 2009 and 2019.
  • Searched databases included PubMed, Google Scholar, Science-Direct, and EBSCO.
  • Inclusion criteria focused on studies using nonlinear measures (sample entropy, fractal dimension, Lyapunov exponent) to assess center of pressure variability during standing using force plates.

Main Results:

  • Out of 1100 initial articles, 43 were reviewed, with a significant focus on sample entropy (33 articles) and fractal dimension (10 articles).
  • The review demonstrated reduced postural regularity associated with aging and disease/injury.
  • Findings indicate alterations in the adaptive capabilities of the movement system and changes in predictability under different task constraints.

Conclusions:

  • Nonlinear metrics provide valuable insights into human postural stability, complementing traditional linear approaches.
  • Aging and pathological conditions significantly impair the adaptability and regularity of postural control.
  • Understanding these nonlinear dynamics is crucial for assessing movement system health and developing targeted interventions.