Searching for just a few words should be enough to get started. If you need to make more complex queries, use the tips below to guide you.
Article type: Research Article
Authors: Hébert, Luc J.a; b; c; * | Vial, Christophed; e | Hogrel, Jean-Yvesf | Puymirat, Jackg
Affiliations: [a] Department of Rehabilitation, Faculty of Medicine, Laval University, QC, Canada | [b] Department of Radiology-Nuclear Medicine, Faculty of Medicine, Laval University, QC, Canada | [c] Centre for Interdisciplinary Research in Rehabilitation and Social Integration (CIRRIS), QC, Canada | [d] Neuro-rehabilitation Service, Hôpital Pierre Werteimer (Groupement Hospitalier Est), Lyon, France | [e] Department of Electro-neurophysiology and Muscular Pathology, Hôpital Pierre Werteimer (Groupement Hospitalier Est), Lyon, France | [f] Neuromuscular Physiology and Evaluation Laboratory, Neuromuscular Investigation Center, Institute of Myology, Paris, France | [g] Unit of Human Genetics, Hôpital de l’Enfant-Jésus, CHU Research Center, QC, Canada
Correspondence: [*] Correspondence to: Luc J. Hébert, PT, PhD, CIRRIS-IRDPQ, 525, boulevard Wilfrid-Hamel, Quebec (QC) G1M 2S8, Canada. Tel.: +1 418 529 9141/Ext: 6579; Fax: +1 418 529 3548; E-mail: lucj.hebert@fmed.ulaval.ca.
Abstract: Background:In Myotonic Dystrophy type 1 (DM1) patients, ankle muscles are affected early and this impairment is reported to be a good biological marker for longitudinal studies. Objective:To characterize the ankle dorsiflexion (DF) and eversion (EV) maximal isometric muscle strength changes in adult DM1 patients over 5 years using a standardized handheld dynamometer protocol and the Myoankle method, compare the changes measured with both methods and to the standard error of measurement, and verify the relationship between ankle muscle strength and gait performance. Methods:The maximal isometric muscle strength of ankle DF and EV in DM1 patients from Quebec and Lyon was assessed at baseline, 18, 36 and 60 months using a handheld dynamometer (HHD) protocol and the MyoAnkle method. Results:There was a decrease of torque in DF/EV of 36.0% /31.3% and 27.7% /35.5% for the Quebec and Lyon cohorts respectively (p≤0.01), but not in a linear way. In most cases (82.5%), the changes observed were greater than the standard error of measurement. DF torque measures taken by the two methods (HHD and MyoAnkle) were highly correlated (rp = 0.97–0.98, p < 0.001). Conclusion:Muscle strength ankle impairments are clinically meaningful in DM1 and can be accurately monitored using quantitative testing to measure the efficacy of therapeutic trials.
Keywords: Muscle strength, myotonic dystrophy, muscle strength dynamometer, multicenter studies
DOI: 10.3233/JND-180311
Journal: Journal of Neuromuscular Diseases, vol. 5, no. 3, pp. 321-330, 2018
IOS Press, Inc.
6751 Tepper Drive
Clifton, VA 20124
USA
Tel: +1 703 830 6300
Fax: +1 703 830 2300
sales@iospress.com
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
IOS Press
Nieuwe Hemweg 6B
1013 BG Amsterdam
The Netherlands
Tel: +31 20 688 3355
Fax: +31 20 687 0091
info@iospress.nl
For editorial issues, permissions, book requests, submissions and proceedings, contact the Amsterdam office info@iospress.nl
Inspirees International (China Office)
Ciyunsi Beili 207(CapitaLand), Bld 1, 7-901
100025, Beijing
China
Free service line: 400 661 8717
Fax: +86 10 8446 7947
china@iospress.cn
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
如果您在出版方面需要帮助或有任何建, 件至: editorial@iospress.nl