| An analysis of supraspinatus EMG activity and shoulder isometric force development. | |
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MedLine Citation:
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PMID: 1501557 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Injury to the shoulder represents a significant disability to the athlete participating in throwing and other overhead sporting activities. There are few scientifically based rehabilitation protocols regarding the most efficient exercises for the rotator cuff musculature. There is contradiction concerning the most efficient position for supraspinatus muscle electromyographic (EMG) activity. Because the supraspinatus is the most frequently injured musculotendinous structure of the shoulder, the most efficient position for testing and rehabilitation of this structure should be identified. The purposes of this study were to compare two test positions for supraspinatus EMG activity and maximal voluntary isometric contraction (MVIC) force development of the shoulder. Twenty-two subjects performed MVIC in the two recommended testing positions. A paired t-test revealed the prone position produced significantly greater (P = 0.04) EMG activity than the standing test position. An additional paired t-test revealed the standing position produced significantly greater (P = 0.0001) force than the prone position. Since the supraspinatus EMG activity was lowest in the position that produced the greatest shoulder MVIC force, we hypothesize that muscle substitution occurred. We recommend the prone position for supraspinatus rehabilitation and testing. |
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Authors:
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T W Worrell; B J Corey; S L York; J Santiestaban |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Medicine and science in sports and exercise Volume: 24 ISSN: 0195-9131 ISO Abbreviation: Med Sci Sports Exerc Publication Date: 1992 Jul |
Date Detail:
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Created Date: 1992-09-14 Completed Date: 1992-09-14 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 8005433 Medline TA: Med Sci Sports Exerc Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 744-8 Citation Subset: IM; S |
Affiliation:
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Krannert Graduate School of Physical Therapy, University of Indianapolis, IN 46227. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Electromyography Female Humans Isometric Contraction Male Muscles / injuries, physiopathology* Posture Shoulder / injuries* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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