A longitudinal physical profile assessment of skeletal muscle manifestations in myotonic dystrophy

Nitz, J. C., Burns, Y. R. and Jackson, R. V. (1999) A longitudinal physical profile assessment of skeletal muscle manifestations in myotonic dystrophy. Clinical Rehabilitation, 13 1: 64-73. doi:10.1191/026921599674297570

Author Nitz, J. C.
Burns, Y. R.
Jackson, R. V.
Title A longitudinal physical profile assessment of skeletal muscle manifestations in myotonic dystrophy
Journal name Clinical Rehabilitation   Check publisher's open access policy
ISSN 0269-2155
Publication date 1999
Sub-type Article (original research)
DOI 10.1191/026921599674297570
Volume 13
Issue 1
Start page 64
End page 73
Total pages 10
Place of publication Sevenoaks, England
Publisher Edward Arnold
Collection year 1999
Language eng
Subject C1
730107 Inherited diseases (incl. gene therapy)
321013 Neurology and Neuromuscular Diseases
Abstract Objectives: To develop an assessment that describes the skeletal muscle manifestations in myotonic dystrophy subjects and then use it to quantify the presentation of skeletal muscle disability and to show change over time. Design: A quantified skeletal muscle assessment was developed and applied three times over a two-year period at intervals around 12 months. Thirty-six subjects with myotonic dystrophy and 20 subjects without neuromuscular disability were evaluated. The assessment comprised manual muscle testing of five pairs of muscles, measuring neck flexor strength with a strain gauge, respiratory function tests, power and lateral pinch grip strength, all tests of impairment, Assessment of the ability to move from sitting to standing and fasten buttons tested disability. Results: Results from subjects with myotonic dystrophy were compared to the normal data. The subjects with myotonic dystrophy were significantly weaker in proximal upper limb muscles, quadriceps, tibialis anterior muscles and neck flexor muscles as well as power and lateral pinch grips. There was also significant reduction in forced expiratory volume at one second (FEV1) and forced vital capacity (FVC). Significant disability was seen in the myotonics in moving from sitting to standing and in fastening buttons, Over the two-year study period proximal upper limb and lower limb muscle strength, FVC and sit-to-stand ability declined significantly. Power grip declined but lateral pinch grip and FEV1 improved significantly. Button fastening ability improved significantly. Conclusion: The test developed was shown to be reliable and sensitive to the change in skeletal muscle manifestations in subjects with myotonic dystrophy who were shown to be significantly weaker than normal subjects.
Keyword Rehabilitation
Ctg Repeat
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Health and Rehabilitation Sciences Publications
School of Medicine Publications
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Created: Tue, 10 Jun 2008, 13:32:24 EST