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Related Experiment Video

Updated: Jul 5, 2025

Experimental Methods to Study Human Postural Control
08:12

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Analysis of the Relation Between Balance Control Subsystems: A Structural Equation Modeling Approach.

Kangjia Wu, Jingyu Zhang, Alkamat Wahib Abdullah Mohsen

    IEEE Transactions on Neural Systems and Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society
    |January 23, 2024
    PubMed
    Summary
    This summary is machine-generated.

    Human balance relies on interacting subsystems, not isolated functions. Anticipatory Postural Adjustment strongly links to fear of falling, while sensory inputs like proprioception are key for overall balance control.

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    Area of Science:

    • Human physiology
    • Biomechanics
    • Neuroscience

    Background:

    • Maintaining balance is vital for daily activities and requires complex coordination of multiple balance control subsystems (BCSes).
    • Previous research often studied BCSes in isolation, neglecting their interdependencies and combined impact on balance and fear of falling (FOF).

    Purpose of the Study:

    • To investigate the interrelationships between four key BCSes: Reactive Postural Control (RPC), Anticipatory Postural Adjustment (APA), Dynamic Gait (DG), and Sensory Orientation (SO).
    • To examine the association between these BCSes, their interactions, and their relationship with fear of falling (FOF).
    • To analyze the interplay of sensory inputs (vision, proprioception, vestibular) on balance using center of pressure (COP) parameters.

    Main Methods:

    • Utilized clinical scales to assess BCS functions and psychological factors like FOF.
    • Employed hierarchical structural equation modeling (SEM) to analyze relationships between BCSes and FOF.
    • Applied posturography to extract COP signal parameters.
    • Used SEM with sparsity constraint to model sensory input interactions on balance.

    Main Results:

    • BCSes (RPC, APA, DG, SO) indirectly influence each other, mediated by overall balance ability.
    • APA showed the strongest association with FOF, while RPC had the least.
    • Vision, proprioception, and vestibular inputs directly interact, with proprioception being the most influential sensory subsystem.

    Conclusions:

    • This study provides the first numerical evidence that BCSes are interconnected and not independent.
    • The findings highlight the complex interplay between motor control and sensory systems in maintaining balance.
    • Understanding these interactions is crucial for diagnosing and managing balance disorders and improving clinical interventions.