Constrained Tensor Decomposition Reveals Lever Arms Synergies in the Musculoskeletal System

This study investigates the muscular synergies of the lower limb during human walking, estimated using a constrained canonical polyadic decomposition of muscle lever arms. The results confirm the existence of synergies complementary to syn-ergies previously derived from nonnegative matrix factorizat...

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Bibliographic Details
Published in2024 32nd European Signal Processing Conference (EUSIPCO) pp. 1322 - 1326
Main Authors Claude, Joris, Dumas, Raphael, Cohen, Jeremy E.
Format Conference Proceeding
LanguageEnglish
Published European Association for Signal Processing - EURASIP 26.08.2024
Subjects
Europe
Instruments
Knee
Legged locomotion
Matrix decomposition
Muscles
Program processors
Prosthetics
Signal processing
Tensors
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ISSN2076-1465
DOI10.23919/EUSIPCO63174.2024.10715450

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Summary:This study investigates the muscular synergies of the lower limb during human walking, estimated using a constrained canonical polyadic decomposition of muscle lever arms. The results confirm the existence of synergies complementary to syn-ergies previously derived from nonnegative matrix factorization of computed muscle activations or measured electromyographic signals. Furthermore, we present a method for computing museu-lotendon forces based on the use of 'synergistic forces', computed using lever arm synergies. This method is evaluated through the estimation of knee contact forces for one subject equipped with an instrumented knee prosthesis.
ISSN:2076-1465
DOI:10.23919/EUSIPCO63174.2024.10715450