HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Muscle and tendon stiffness assessment using the alpha method and ultrafast ultrasound

Hugo Hauraix Alexandre Foure 1 Sylvain Dorel 2 Christophe Cornu 2 Antoine Nordez 2
1 CRMBM - Centre de résonance magnétique biologique et médicale
2 MIP - Motricité, interactions, performance EA 4334 / Movement - Interactions - Performance
Abstract : The alpha method enables the dissociation of the passive (i.e., tendinous tissues) and active (i.e., fascicles) part of muscle-tendon stiffness. It is based on two main assumptions (i.e., a constant tendon stiffness and a muscle stiffness proportional to the torque produced), which have not been approved in vivo. The purpose of this study was to validate these two assumptions using ultrafast ultrasound, and to compare fascicle and tendon stiffness as determined by both methods. Ten healthy males performed a fast-stretch experiment on the ankle plantar flexors. The mathematical model of the alpha method allowed to estimate the stiffness of muscle and tendinous tissues on the basis of the assumptions associated to the behaviors of muscle fascicles and tendinous tissues. Muscle and tendon stiffness of the gastrocnemius medialis were also calculated from ultrafast ultrasound measurements. Muscle stiffness measured by the ultrasound method increased from 217 +/- A 83 to 720 +/- A 265 N/mm with an increasing level of force (from
Keywords : frame rate ultrasound triceps surae aponeurosis load-displacement properties series elastic component Tendon Fascicles Gastrocnemius Plantar flexors Ankle joint electromechanical delay passive parts achilles-tendon mechanical-properties in-vivo quick-release method
Document type :
Journal articles
Complete list of metadata
https://hal-amu.archives-ouvertes.fr/hal-01414357
Contributor : Monique Bernard Connect in order to contact the contributor
Submitted on : Monday, December 12, 2016 - 11:39:11 AM
Last modification on : Wednesday, April 27, 2022 - 4:02:38 AM

Identifiers

  • HAL Id : hal-01414357, version 1

Collections

UNIV-AMU | CNRS | UNIV-NANTES | CRMBM | UNIV-LEMANS | MIP

Citation

Hugo Hauraix, Alexandre Foure, Sylvain Dorel, Christophe Cornu, Antoine Nordez. Muscle and tendon stiffness assessment using the alpha method and ultrafast ultrasound. European Journal of Applied Physiology, Springer Verlag, 2015, 115 (7), pp.1393--1400. ⟨hal-01414357⟩

Export

BibTeX TEI DC DCterms EndNote Datacite

Share

Metrics

Record views

45