Muscle shear elastic modulus is linearly related to muscle torque over the entire range of isometric contraction intensity

Filiz Ateş; François Hug; Killian Bouillard; Marc Jubeau; Thomas Frappart; Mathieu Couade; Jeremy Bercoff; Antoine Nordez

doi:10.1016/j.jelekin.2015.02.005

Muscle shear elastic modulus is linearly related to muscle torque over the entire range of isometric contraction intensity

Filiz Ateş^*, François Hug, Killian Bouillard, Marc Jubeau, Thomas Frappart, Mathieu Couade, Jeremy Bercoff, Antoine Nordez

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

95 Citations (Scopus)

Abstract

Muscle shear elastic modulus is linearly related to muscle torque during low-level contractions (2) (range: 0.86-0.98) indicated that the relationship between elastic modulus and torque can be accurately modeled by a linear regression over the entire range (0% to 100% of MVC). The changes in shear elastic modulus as a function of torque were highly repeatable. Lower R² values (0.89 ± 0.13 for 1/16 of ROI) and significantly increased absolute errors were observed when the shear elastic modulus was averaged over smaller ROI, half, 1/4 and 1/16 of the full ROI) than the full ROI (mean size: 1.18 ± 0.24 cm²). It suggests that the ROI should be as large as possible for accurate measurement of muscle shear modulus.

Original language	English
Pages (from-to)	703-708
Number of pages	6
Journal	Journal of Electromyography and Kinesiology
Volume	25
Issue number	4
DOIs	https://doi.org/10.1016/j.jelekin.2015.02.005
Publication status	Published - 2015 Aug 1
Externally published	Yes

Keywords

Abductor Digiti Minimi
Force
Shear wave
Supersonic shear imaging
Ultrasound elastography

ASJC Scopus subject areas

Neuroscience (miscellaneous)
Biophysics
Clinical Neurology
Medicine(all)

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10.1016/j.jelekin.2015.02.005

Cite this

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title = "Muscle shear elastic modulus is linearly related to muscle torque over the entire range of isometric contraction intensity",

abstract = "Muscle shear elastic modulus is linearly related to muscle torque during low-level contractions (2) (range: 0.86-0.98) indicated that the relationship between elastic modulus and torque can be accurately modeled by a linear regression over the entire range (0% to 100% of MVC). The changes in shear elastic modulus as a function of torque were highly repeatable. Lower R2 values (0.89 ± 0.13 for 1/16 of ROI) and significantly increased absolute errors were observed when the shear elastic modulus was averaged over smaller ROI, half, 1/4 and 1/16 of the full ROI) than the full ROI (mean size: 1.18 ± 0.24 cm2). It suggests that the ROI should be as large as possible for accurate measurement of muscle shear modulus.",

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author = "Filiz Ate{\c s} and Fran{\c c}ois Hug and Killian Bouillard and Marc Jubeau and Thomas Frappart and Mathieu Couade and Jeremy Bercoff and Antoine Nordez",

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AU - Ateş, Filiz

AU - Hug, François

AU - Bouillard, Killian

AU - Jubeau, Marc

AU - Frappart, Thomas

AU - Couade, Mathieu

AU - Bercoff, Jeremy

AU - Nordez, Antoine

PY - 2015/8/1

Y1 - 2015/8/1

N2 - Muscle shear elastic modulus is linearly related to muscle torque during low-level contractions (2) (range: 0.86-0.98) indicated that the relationship between elastic modulus and torque can be accurately modeled by a linear regression over the entire range (0% to 100% of MVC). The changes in shear elastic modulus as a function of torque were highly repeatable. Lower R2 values (0.89 ± 0.13 for 1/16 of ROI) and significantly increased absolute errors were observed when the shear elastic modulus was averaged over smaller ROI, half, 1/4 and 1/16 of the full ROI) than the full ROI (mean size: 1.18 ± 0.24 cm2). It suggests that the ROI should be as large as possible for accurate measurement of muscle shear modulus.

AB - Muscle shear elastic modulus is linearly related to muscle torque during low-level contractions (2) (range: 0.86-0.98) indicated that the relationship between elastic modulus and torque can be accurately modeled by a linear regression over the entire range (0% to 100% of MVC). The changes in shear elastic modulus as a function of torque were highly repeatable. Lower R2 values (0.89 ± 0.13 for 1/16 of ROI) and significantly increased absolute errors were observed when the shear elastic modulus was averaged over smaller ROI, half, 1/4 and 1/16 of the full ROI) than the full ROI (mean size: 1.18 ± 0.24 cm2). It suggests that the ROI should be as large as possible for accurate measurement of muscle shear modulus.

KW - Abductor Digiti Minimi

KW - Force

KW - Shear wave

KW - Supersonic shear imaging

KW - Ultrasound elastography

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Muscle shear elastic modulus is linearly related to muscle torque over the entire range of isometric contraction intensity

Abstract

Keywords

ASJC Scopus subject areas

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