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Applications of bio-feedback to muscle models

Applications of bio-feedback to muscle models
Applications of bio-feedback to muscle models
An EMG-driven musculoskeletal model is implemented to estimate subject-specific musculoskeletal parameters such as the optimal physiological muscle length, the tendon slack length and the maximum isometric muscle force of flexor and extensor muscle groups crossing the wrist, as well as biomechanical indexes to quantify the muscle operating range, the stiffness of the musculotendon actuators, and the contribution of the muscle fibers to the joint moment. Twelve healthy subjects (11 males and 1 female, mean age 31.1 ± 8.7 years) were instructed to perform isometric maximum voluntary contractions of wrist flexors and extensors. Recorded EMGs were used as input to the model and the root mean square error (RMSE) between measured and predicted torque was minimised to estimate the subject-specific musculotendon parameters. The model was validated and the RMSE and the normalised RMSE calculated during estimation and validation phases are compared. Estimated subject-specific musculoskeletal parameters vary in a physiologically realistic range, while the biomechanical indexes are consistent with previously published data. The proposed methodology proved to be effective for the in-vivo estimation of physiological parameters of the musculotendon complex and has potential as an investigative tool to distinguish aetiological differences among subjects affected by musculoskeletal disorders
993
Institute of Sound and Vibration Research, University of Southampton
Colacino, F.M.
f77ad887-2e87-443e-ad18-c50b768e8893
Rustighi, E.
9544ced4-5057-4491-a45c-643873dfed96
Mace, B.R.
cfb883c3-2211-4f3a-b7f3-d5beb9baaefe
Colacino, F.M.
f77ad887-2e87-443e-ad18-c50b768e8893
Rustighi, E.
9544ced4-5057-4491-a45c-643873dfed96
Mace, B.R.
cfb883c3-2211-4f3a-b7f3-d5beb9baaefe

Colacino, F.M., Rustighi, E. and Mace, B.R. (2011) Applications of bio-feedback to muscle models (ISVR Technical Memorandum, 993) Southampton, GB. Institute of Sound and Vibration Research, University of Southampton 103pp.

Record type: Monograph (Project Report)

Abstract

An EMG-driven musculoskeletal model is implemented to estimate subject-specific musculoskeletal parameters such as the optimal physiological muscle length, the tendon slack length and the maximum isometric muscle force of flexor and extensor muscle groups crossing the wrist, as well as biomechanical indexes to quantify the muscle operating range, the stiffness of the musculotendon actuators, and the contribution of the muscle fibers to the joint moment. Twelve healthy subjects (11 males and 1 female, mean age 31.1 ± 8.7 years) were instructed to perform isometric maximum voluntary contractions of wrist flexors and extensors. Recorded EMGs were used as input to the model and the root mean square error (RMSE) between measured and predicted torque was minimised to estimate the subject-specific musculotendon parameters. The model was validated and the RMSE and the normalised RMSE calculated during estimation and validation phases are compared. Estimated subject-specific musculoskeletal parameters vary in a physiologically realistic range, while the biomechanical indexes are consistent with previously published data. The proposed methodology proved to be effective for the in-vivo estimation of physiological parameters of the musculotendon complex and has potential as an investigative tool to distinguish aetiological differences among subjects affected by musculoskeletal disorders

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Published date: July 2011

Identifiers

Local EPrints ID: 193391
URI: http://eprints.soton.ac.uk/id/eprint/193391
PURE UUID: 47c1c0b2-f803-4a6b-a887-3985797f907a
ORCID for E. Rustighi: ORCID iD orcid.org/0000-0001-9871-7795
ORCID for B.R. Mace: ORCID iD orcid.org/0000-0003-3312-4918

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Date deposited: 13 Jul 2011 12:17
Last modified: 14 Mar 2024 03:55

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Contributors

Author: F.M. Colacino
Author: E. Rustighi ORCID iD
Author: B.R. Mace ORCID iD

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