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Relationships between motor impairments and activity limitations in patients with neuromuscular disorders.
  1. Laure Vandervelde (laure.vandervelde{at}uclouvain.be)
  1. Université catholique de Louvain, Belgium
    1. Peter Y.K. Van den Bergh (peter.vandenbergh{at}uclouvain.be)
    1. Cliniques universitaires Saint-Luc, Belgium
      1. Anne Renders (anne.renders{at}clin.ucl.ac.be)
      1. Cliniques universitaires Saint-Luc, Belgium
        1. Nathalie Goemans (nathalie.goemans{at}uz.kuleuven.ac.be)
        1. Universitair Ziekenhuis Gasthuisberg, Belgium
          1. Jean-Louis Thonnard (jean-louis.thonnard{at}uclouvain.be)
          1. Université catholique de Louvain, Belgium

            Abstract

            The strength and nature of the relationships between motor impairments and activity limitations assessed by the ACTIVLIM questionnaire were investigated in 245 patients with neuromuscular disorders. Measures of motor impairments consisted of (1) a grip strength test using a Jamar dynamometer, (2) a manual muscle testing bilaterally performed in eighteen muscle groups and (3) a gait speed spontaneously adopted by the patients using the 10-meter timed walking test. Activity limitations were poorly correlated with grip strength in both hands (r=0.3 and 0.36) and moderately correlated with gait speed (r=0.53). The Spearman’s coefficients of correlation between the manual muscle testing and activity limitations were moderate to very poor (rho=0.5 to 0.17). The relationships between motor impairments and activity limitations are not so straightforward in patients with neuromuscular disorders, indicating that the activity limitations should be separately assessed and cannot be simply inferred from motor impairment measures.

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