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dc.contributor.authorLacourpaille, Lilian
dc.contributor.authorNordez, Antoine
dc.contributor.authorHug, Francois
dc.contributor.authorDoguet, Valentin
dc.contributor.authorAndrade, Ricardo
dc.contributor.authorGuilhem, Gael
dc.description.abstractPurpose: This study aimed to determine whether an increase in muscle shear modulus measured 30 min after eccentric exercise (30 min) reflects the magnitude of force deficit measured 48-h post-exercise (48 H). Methods: A total of 53 healthy participants were distributed in five groups. Four groups performed either repeated eccentric elbow flexions or knee extensions at either a low or high load. A fifth group performed repeated concentric elbow flexions (control load). Results: A significant decreased peak torque was found for elbow flexors and knee extensors 48 h after the eccentric exercises (all P values < 0.001). A significant increase in shear modulus was found at 30 min for the elbow flexors for low (+70.5 ± 44.3%, P < 0.001) and high load (+153.9 ± 192.4%, P < 0.001). Similarly, the shear modulus of knee extensors increased for low (+26.7 ± 19.1%, P < 0.001) and high load (+79.4 ± 67.1%, P < 0.001). The relative increase in shear modulus measured at 30 min was significantly correlated to the relative decrease in peak torque measured at 48 H for both elbow flexors (r = −0.80) and knee extensors (r = −0.82). A further analysis suggested that biceps brachii and rectus femoris were more affected by muscle damage than their synergists. Conclusion: This study shows that an increase in muscle shear modulus measured 30 min after a damaging exercise reflects the decrease in peak torque measured at 48 H. Shear modulus may therefore, provide a useful tool for coaches and clinicians to non-invasively estimate the amount of muscle damage induced by a damaging exercise.
dc.relation.ispartofjournalEuropean Journal of Applied Physiology
dc.subject.fieldofresearchSports science and exercise
dc.subject.keywordsScience & Technology
dc.subject.keywordsLife Sciences & Biomedicine
dc.subject.keywordsSport Sciences
dc.subject.keywordsForce deficit
dc.titleEarly detection of exercise-induced muscle damage using elastography
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationLacourpaille, L; Nordez, A; Hug, F; Doguet, V; Andrade, R; Guilhem, G, Early detection of exercise-induced muscle damage using elastography, European Journal of Applied Physiology, 2017, 117 (10), pp. 2047-2056
gro.hasfulltextNo Full Text
gro.griffith.authorNobrega Andrade, Ricardo J. J.

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