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Change in electromyographic activity of wrist extensor by cylindrical brace

Title
Change in electromyographic activity of wrist extensor by cylindrical brace
Authors
Yoon J.J.Bae H.
Ewha Authors
배하석
SCOPUS Author ID
배하석scopus
Issue Date
2013
Journal Title
Yonsei Medical Journal
ISSN
0513-5796JCR Link
Citation
vol. 54, no. 1, pp. 220 - 224
Indexed
SCI; SCIE; SCOPUS; KCI WOS scopus
Abstract
Purpose: To verify the effect of a newly-developed cylindrical type forearm brace, which was designed to give focal counterforce perpendicularly on the muscle belly of the wrist extensor. Materials and Methods: The dominant hands of 24 (12 males, 12 females) healthy subjects were tested. Two types of forearm braces (focal cylindrical type and broad pneumatic type) were examined. The braces were applied at the extensor carpi radialis brevis, 5 to 7 cm distal to the lateral epicondyle. Two surface electrodes were attached to the proximal and distal parts of the brace. By quantitative electromyography, the mean amplitudes of voluntary extensor carpi radialis brevis contraction before and after applying each brace were recorded and analyzed. Results: The mean amplitudes of the focal cylindrical brace and broad pneumatic brace were reduced significantly compared to no brace (p<0.05), with a larger reduction for the cylindrical brace than the pneumatic brace (p<0.05). There was no significant difference between the proximal and distal mean amplitudes with each brace. Conclusion: A cylindrical type brace decreased electromyographic activity in the wrist extensor more effectively than did the pneumatic type brace. © Yonsei University College of Medicine 2013.
DOI
10.3349/ymj.2013.54.1.220
Appears in Collections:
의과대학 > 의학과 > Journal papers
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