| Turn/amplitude parameter changes during sustained effort. | |
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MedLine Citation:
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PMID: 8913198 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Little is known about the effect of sustained effort on turn/amplitude parameters. Therefore, the turn/amplitude analysis was applied at contractions with 50 +/- 5% of the right biceps brachii muscle's maximum force to 31 healthy human subjects (19-67 years old), 15 patients with neuropathies (30-83 years old) and 15 patients with myopathies (16-66 years old). After 3 min of sustained contraction, turns/second (T/S) decreased by 50% in healthy human subjects and by 25% in patients with neuropathies and patients with myopathies. The amplitude/turn (A/T) increased by 25% in healthy human subjects and remained almost unchanged in pathological cases. Compared to its onset values, the ratio A/T:T/S increased by > 150% in healthy human subjects and by 50% in patients with myopathies. With decreasing T/S, the A/T increased in healthy human subjects, decreased in patients with neuropathies and stayed unchanged in patients with myopathies. With this method detection rates of 60% for patients with neuropathies and 67% for patients with myopathies were found. The most reliable turn/amplitude parameters for the identification of pathological cases were the T/S and the A/T. Evaluating these two parameters, the rate of false positive results was 3.2%. The study demonstrated changes during sustained effort to be different between sexes and between healthy human subjects and patients with neuromuscular disorders. It described turn/amplitude analysis during sustained effort as a supplemental electrophysiological device for the detection of patients with neuromuscular disorders. The method is objective, fast and reliable. |
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Authors:
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J Finsterer; B Mamoli |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Electroencephalography and clinical neurophysiology Volume: 101 ISSN: 0013-4694 ISO Abbreviation: Electroencephalogr Clin Neurophysiol Publication Date: 1996 Oct |
Date Detail:
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Created Date: 1996-12-20 Completed Date: 1996-12-20 Revised Date: 2008-09-09 |
Medline Journal Info:
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Nlm Unique ID: 0375035 Medline TA: Electroencephalogr Clin Neurophysiol Country: IRELAND |
Other Details:
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Languages: eng Pagination: 438-45 Citation Subset: IM |
Affiliation:
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LBI for Research in Epilepsy and Neuromuscular Disorders, Vienna, Austria. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Aged, 80 and over Arm / physiology* Electromyography Female Humans Male Middle Aged Muscle Contraction / physiology* Neuromuscular Diseases / physiopathology* Reference Values |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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