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Intra-rater reliability and concurrent validity of quantified muscle testing for maximal knee extensors strength in men with myotonic dystrophy type 1

Roussel Marie-Pier, Hébert Luc J. et Duchesne Élise. (2019). Intra-rater reliability and concurrent validity of quantified muscle testing for maximal knee extensors strength in men with myotonic dystrophy type 1. Journal of Neuromuscular Diseases, 6, (2), p. 233-240.

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URL officielle: https://doi.org/10.3233/JND-190388

Résumé

Background :

Myotonic dystrophy type 1 (DM1) is the most prevalent degenerative neuromuscular disease in adults. Knee extensor (KE) maximal strength loss is a strong indicator of physical limitations in DM1. A reliable, precise and accessible maximal strength evaluation method needs to be validated for this slowly progressive disease.

Objective :

This paper aims to assess the intra-rater reliability, the standard error of measurement (SEM), the minimal detectable change (MDC), and the concurrent validity of quantified muscle testing (QMT) using a handheld dynamometer with a gold standard: the Biodex isokinetic device. Methods:Nineteen men with the adult form of DM1 participated in this study by attending 2 visits spaced by one week. The evaluation of KE muscle strength with QMT was completed on the first visit and the same QMT evaluation in addition to the maximal muscle strength evaluation using an isokinetic device were performed on the second visit.

Results :

The intra-rater reliability was excellent with an intraclass correlation coefficient (ICC) of 0.98 (0.96–0.99 : 95% confidence interval). SEM and MDC values were 1.05 Nm and 2.92 Nm, respectively. Concurrent validity of QMT of KE muscle group with the Biodex was also excellent with a Spearman’s correlation of ρ= 0.98.

Conclusions :

The excellent concurrent validity and intra-rater reliability, and the small SEM and MDC of the QMT make this test a method of choice, in either a clinical or research setting, to precisely evaluate muscle strength impairments of the KE in men with DM1.

Type de document:Article publié dans une revue avec comité d'évaluation
Volume:6
Numéro:2
Pages:p. 233-240
Version évaluée par les pairs:Oui
Date:2019
Sujets:Sciences de la santé
Sciences de la santé > Sciences de l'activité physique et réadaptation
Sciences de la santé > Sciences de l'activité physique et réadaptation > Physiothérapie
Département, module, service et unité de recherche:Départements et modules > Département des sciences de la santé > Unité d'enseignement en physiothérapie
Mots-clés:Myotonic dystrophy type 1, muscle strength, quantified muscle testing, isokinetic device, intra-rater reliability, concurrent validity, dystrophie myotonique de type 1, force musculaire, tests musculaires quantifiés, dispositif isocinétique, fiabilité intra-évaluateur, validité concurrente
Déposé le:28 août 2019 00:46
Dernière modification:28 août 2019 00:46
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