| Effects of Russian current and low-frequency pulsed current on discomfort level and current amplitude at 10% maximal knee extensor torque. | |
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MedLine Citation:
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PMID: 22404697 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Background: Low-frequency pulsed current (LFPC) and Russian current (RC), a type of kilohertz-frequency alternating current, have been frequently used for muscle strengthening in rehabilitation programs. Despite the popularity of these current types, it is unclear which is most effectively able to generate a similar submaximal torque with minimal discomfort and current amplitude. Objective: To compare discomfort and current amplitude between LFPC and RC to achieve a knee extensor torque of 10% of the maximal isometric voluntary contraction (MIVC). Methods: Twenty-two healthy subjects were subjected to three electrically elicited knee extensor submaximal contractions (10% MIVC) that were sustained for 10 seconds. The current amplitude required to achieve 10% MIVC and subjective discomfort were assessed directly by the electrical stimulator and with the Visual Analogue Pain Scale, respectively. A paired t-test was used to determine differences between the electrical currents (α = 0.05). Results: LFPC required significantly lower current amplitude (15%) and a lower discomfort level (50%) to achieve 10% of MIVC compared to RC. Conclusion: LFPC current seems to be more effective than RC with respect to discomfort level and current amplitude to produce 10% of MIVC. |
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Authors:
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Marco Aurélio Vaz; Fernando Amâncio Aragão; Emerson S Boschi; Rafael Fortuna; Mônica de Oliveira Melo |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-3-9 |
Journal Detail:
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Title: Physiotherapy theory and practice Volume: - ISSN: 1532-5040 ISO Abbreviation: - Publication Date: 2012 Mar |
Date Detail:
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Created Date: 2012-3-12 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9015520 Medline TA: Physiother Theory Pract Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Exercise Research Laboratory, School of Physical Education , Federal University of Rio Grande do Sul , Porto Alegre, RS , Brazil. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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