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Updated: Sep 13, 2025
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Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb
Published on: August 30, 2016
10.3K
Wobble Board Instability Enhances Compensatory CoP Responses to CoM Movement Across Timescales.
Mahsa Barfi1, Theodoros Deligiannis1, Brian Schlattmann1
1Department of Biomechanics, University of Nebraska at Omaha, Omaha, NE 68182, USA.
Sensors (Basel, Switzerland)
|July 30, 2025
Summary
Wobble board training improves postural control by enhancing how the body adjusts its center of pressure (CoP) to the center of mass (CoM). This training helps coordinate body movements for better stability, especially in clinical populations.
Area of Science:
- Biomechanics
- Human Motor Control
- Systems Neuroscience
Background:
- Postural control relies on the coordinated interplay between the center of pressure (CoP) and center of mass (CoM).
- Understanding how mechanical and visual demands influence this interplay is crucial for developing effective interventions.
Purpose of the Study:
- To investigate the influence of mechanical instability (wobble board) and visual demands (Trail Making Task) on the relationship between CoP and CoM.
- To analyze the effects across multiple timescales using Multiscale Regression Analysis (MRA).
Main Methods:
- Utilized a wobble board for mediolateral (ML) instability and the Trail Making Task (TMT) for anteroposterior (AP) visual demands.
- Employed Multiscale Regression Analysis (MRA), derived from Detrended Fluctuation Analysis (DFA), to examine CoP-CoM and CoM-CoP interactions.
- Measured CoP from force plate data and CoM from 3D motion capture.
Main Results:
- The wobble board attenuated CoM-to-CoP effects (100-400ms), with accentuation along the AP axis and decrease along the ML axis.
- CoM showed no sensitivity to CoP movements under varying task demands.
- Alterations in CoP responses to CoM were primarily driven by mechanical constraints, not visual demands.
Conclusions:
- Bodily degrees of freedom (DoFs) exhibit characteristic timescales for maintaining upright posture.
- Directionally challenging biomechanical constraints significantly impact CoP-CoM dynamics.
- Wobble board training shows potential for improving CoM-CoP dynamics in individuals with postural deficits.
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