Lower Limbs 3D Joint Kinematics Estimation From Force Plates Data and Machine Learning - Archive ouverte HAL
Conference Papers Year : 2024

Lower Limbs 3D Joint Kinematics Estimation From Force Plates Data and Machine Learning

Abstract

This study investigated the possibility of using machine learning to estimate 3D lower-limb joint kinematics during a rehabilitation squat exercise from force plate data, that can be collected very simply outside of a laboratory and does not pose privacy issues. The proposed approach is based on a bidirectional-Long-Short-Term-Memory (Bi-LSTM) associated to a Multi-Layer-Perceptron (MLP) model. The use of MLP allows fast training and evaluation time. The model was trained and validated on nineteen healthy young volunteers using a stereophotogrammetric motion capture system to collect ground truth data. Volunteers performed squats in normal conditions and using an ankle brace to simulate pathological motion. Also additional loads were added onto lower limbs segments to study the influence atypical mass distribution. The root mean square differences between the estimated joint angles and those reconstructed with the stereophotogrammetric system were lower than 6deg with correlation coefficients higher than 0.9 in average. Furthermore, the inference time of the proposed approach was as low as 12µs paving the way of future reliable real-time measurement tools.
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Dates and versions

hal-04749046 , version 1 (23-10-2024)

Licence

Public Domain

Identifiers

  • HAL Id : hal-04749046 , version 1

Cite

Kahina Chalabi, Mohamed Adjel, Thomas Bousquet, Maxime Sabbah, Bruno Watier, et al.. Lower Limbs 3D Joint Kinematics Estimation From Force Plates Data and Machine Learning. IEEE-RAS International Conference on Humanoid Robots (HUMANOIDS), Nov 2024, Nancy, France. ⟨hal-04749046⟩
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