| There is No Relationship between Glenohumeral External Rotation Strength and Posterior Shoulder Tightness in Baseball Players. | |
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MedLine Citation:
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PMID: 22012559 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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CONTEXT: Posterior shoulder tightness has been associated with altered shoulder range of motion (ROM) and several pathologic entities among baseball players. This tightness is hypothesized to be the result of the cumulative stress placed on the posterior shoulder during the deceleration phase of the throwing motion. The role of the posterior shoulder static restraints are to absorb this load while the glenohumeral (GH) external rotators eccentrically decelerate the arm after ball release and therefore also aide in the dissipation of this force. As such, we hypothesized that if the GH external rotators are weak than an excessive amount of this deceleration force is placed on the static restraints, which may lead to subsequent tightness. OBJECTIVE: To compare the relationship between glenohumeral (GH) external rotation strength and posterior shoulder tightness as measured by GH horizontal adduction and internal rotation ROM. DESIGN: Descriptive study. SETTING: Laboratory. PARTICIPANTS: 45 professional baseball players. INTERVENTION: None. MAIN OUTCOME MEASURES: Glenohumeral external rotation strength and GH horizontal adduction and internal rotation ROM. RESULTS: Glenohumeral external rotation strength showed no relationship with both GH horizontal adduction ROM (r2 = 0.02, P = 0.40) and GH internal rotation ROM (r2 = 0.002, P = 0.77). CONCLUSION: There is little-to-no relationship between GH external rotation strength and posterior shoulder tightness among professional baseball players. The posterior static restraints of the shoulder may absorb a large majority of the deceleration forces during the throwing motion. Although strengthening of the posterior shoulder dynamic restraints should not be overlooked, routine stretching of the static restraints may be more beneficial for decreasing posterior shoulder tightness and the subsequent risks associated with this tightness although future research is warranted. |
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Authors:
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Kevin G Laudner; Mike Moline; Keith Meister |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-10-19 |
Journal Detail:
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Title: Journal of sport rehabilitation Volume: - ISSN: 1543-3072 ISO Abbreviation: - Publication Date: 2011 Oct |
Date Detail:
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Created Date: 2011-10-20 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9206500 Medline TA: J Sport Rehabil Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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School of Kinesiology and Recreation, Illinois State University, Normal, IL. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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