Journal
RHEUMATOLOGY
Volume 50, Issue 3, Pages 578-585Publisher
OXFORD UNIV PRESS
DOI: 10.1093/rheumatology/keq356
Keywords
Polymyositis; Dermatomyositis; Activities of daily living; Activity performance; Grip force; Grip strength; Hand function; Quality of life
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Funding
- Karolinska University Hospital
- Karolinska Institutet (National Health Care Sciences Postgraduate School)
- Swedish Rheumatism Association
- Stockholm County Council
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Methods. An observational cross-sectional study was performed in 18 women and 13 men with PM or DM with established disease. Grip force and hand mobility were assessed by Grippit and Escola Paulista de Medicina - Range of Motion scale. Activity performance was measured with myositis activities profile and health-related quality of life by short form-36 (SF-36). Results. Women and men with PM and DM with mean disease duration of 6.8 (5.5) years had a significantly lower grip force than gender- and age-matched healthy individuals (women 71% and men 60%). They also had significantly lower mean values in all dimensions of the health-related quality of life instrument SF-36 compared with the Swedish population. In patients with PM and DM, the grip force correlated significantly with the ability to perform domestic activities. In women with PM and DM, the grip force correlated significantly with the health-related quality of life dimensions vitality and mental health. There were no significant differences between patients with PM and DM regarding grip force, hand mobility, activity performance or health-related quality of life. Conclusions. Patients with PM or DM have reduced grip force that could influence activity performance and health-related quality of life.
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