Comparison of ground reaction force and marker-based methods to estimate mediolateral center of mass displacement and margins of stability during walking

Dynamic balance control during human walking can be described by the distance between the mediolateral (ML) extrapolated center of mass (XCoM) position and the base of support, the margin of stability (MoS). The ML center of mass (CoM) position during treadmill walking can be estimated based on kine...

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Bibliographic Details
Published in:Journal of biomechanics 2023-01, Vol.146, p.111415-111415, Article 111415
Main Authors: Buurke, Tom J.W., van de Venis, Lotte, den Otter, Rob, Nonnekes, Jorik, Keijsers, Noël
Format: Article
Language:English
Subjects:
Adult
Balance
Biomechanical Phenomena
Biomechanics
Center of mass
Center of pressure
Correlation coefficients
Dynamic stability
Fitness equipment
Force plate
Gait
Humans
Kinematics
Locomotion
Mechanical Phenomena
Methods
Motion capture
Postural Balance
Stability
Treadmills
Validation
Velocity
Walking
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Summary:Dynamic balance control during human walking can be described by the distance between the mediolateral (ML) extrapolated center of mass (XCoM) position and the base of support, the margin of stability (MoS). The ML center of mass (CoM) position during treadmill walking can be estimated based on kinematic data (marker-based method) and a combination of ground reaction forces and center of pressure positions (GRF-based method). Here, we compare a GRF-based method with a full-body marker-based method for estimating the ML CoM, ML XCoM and ML MoS. Fifteen healthy adults walked on a dual-belt treadmill at comfortable walking speed for three minutes. Kinetic and kinematic data were collected and analyzed using a GRF-based and marker-based method to compare the ML CoM, ML XCoM and ML MoS. High correlation coefficients (r > 0.98) and small differences (Root Mean Square Difference 
ISSN:0021-9290
1873-2380
DOI:10.1016/j.jbiomech.2022.111415