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KMID : 1812820190030010001
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Journal of Korean Dental Hygiene Science
2019 Volume.3 No. 1 p.1 ~ p.6
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Reliability of a New Test of Levator Scapula Muscle Length
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Song Young-Mun
Weon Jong-Hyuck
Jung Do-Young
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Abstract
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Background: Shortened levator scapula (LS) is a major cause of neck and shoulder pain and reduced motor function. Therefore, measuring LS muscle length is a key element in evaluating patients with shoulder dysfunction.
Purpose: The purpose of this study was to evaluate the intra- and inter-rater reliability of a newly designed levator scapular length test (LSLT).
Study design: Intra- and inter-tester repeated measures.
Methods: We recruited 28 participants in this study. Subjects were divided into two groups: normal scapula length and shortened scapula length. The LS index (LSI) and LSLT were applied twice by one examiner and once by a different examiner. The intraclass correlation coefficient was used to assess intra- and inter-rater reliability of the LSI and LSLT. Pearson’s correlation coefficient was used to evaluate the correlation between the tests.
Results: The intra-rater reliability scores of LSI and LSLT were 0.95 and 0.98, and the inter-rater test reliability scores were 0.96 and 0.98, respectively. The correlation coefficient was 0.63, indicating a moderate relationship between tests.
Conclusions: These findings suggest that LSLT is a reliable method for measuring LS length in clinical practice.
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KEYWORD
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Levator scapular index, Levator scapular length test, Muscle length, Reliability
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