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Comparison of maximal voluntary isometric contraction and Drachman's hand-held dynamometry in evaluating patients with amyotrophic lateral sclerosis
Comparison of maximal voluntary isometric contraction and Drachman's hand-held dynamometry in evaluating patients with amyotrophic lateral sclerosis
- Source :
- Muscle & Nerve. 22:1265-1270
- Publication Year :
- 1999
- Publisher :
- Wiley, 1999.
-
Abstract
- Maximal voluntary isometric contraction (MVIC) is a standard tool for assessment of muscle strength in treatment trials for amyotrophic lateral sclerosis (ALS). There is need for more practical bedside techniques especially for severely disabled patients. Hand-held dynamometry (HH-Dyn) is an inexpensive and easy-to-handle device. MVIC was measured in five proximal muscle groups bilaterally and compared with HH-Dyn in 43 ALS patients. After a training period we found good intrarater correlation for HH-Dyn (r = 0.99), with a low coefficient of variation. Measurements tended to become more accurate after repeated testing due to practice effects in examiners and patients. Overall correlation between HH-Dyn and MVIC was good [r = 0.85 (P < 0.01)]. Strength-range-specific analysis showed a significant linear correlation up to 20 kg (44 lbs.) [r = 0.57 (P < 0.01)]. However, we found a tendency to underestimate muscle strength above 10 kg by HH-Dyn as compared with MVIC, but this became meaningful only above a force of 20 kg. HH-Dyn provides a strength estimate with a precision close to MVIC in weak muscle groups (MRC grade 4). With standardization and appropriate training, HH-Dyn is a useful bedside test, providing an alternative to MVIC for follow-up assessment in ALS.
- Subjects :
- Adult
Male
medicine.medical_specialty
Neuromuscular disease
Physiology
Coefficient of variation
Isometric exercise
Cellular and Molecular Neuroscience
Isometric Contraction
Physiology (medical)
Bedside test
medicine
Humans
Amyotrophic lateral sclerosis
Aged
Hand Strength
business.industry
Amyotrophic Lateral Sclerosis
Hand held
Middle Aged
respiratory system
medicine.disease
Muscle strength
Physical therapy
Proximal Muscle
Feasibility Studies
Female
Neurology (clinical)
business
Subjects
Details
- ISSN :
- 10974598 and 0148639X
- Volume :
- 22
- Database :
- OpenAIRE
- Journal :
- Muscle & Nerve
- Accession number :
- edsair.doi.dedup.....0ce16373a1af523f4e118150ca55e62f
- Full Text :
- https://doi.org/10.1002/(sici)1097-4598(199909)22:9<1265::aid-mus15>3.0.co;2-f