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Stiffness of knee extensors in Duchenne Muscular Dystrophy

✍ Scribed by Christophe Cornu; Francis Goubel; Michel Fardeau

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 125 KB
Volume: 21
Category: Article
ISSN: 0148-639X
DOI: 10.1002/(sici)1097-4598(199812)21:12<1772::aid-mus21>3.0.co;2-0

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✦ Synopsis

The series elastic component (SEC) of Hill's muscle model is sensitive to a modification in muscle functional demand. In this study, SEC stiffness was quantified from quick-released movements in knee extensors of Duchenne muscular dystrophy (DMD) boys to look for possible modifications with the stage of disease. A SEC stiffness index (SI) was defined and was found significantly lower for controls than for DMD. Moreover, a linear relationship was established between mean SI and knee extensors involvement. This suggests a role for this parameter, together with other functional tests, for following patients with DMD.

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