Document Detail


Characteristics of Anterior Shoulder Instability and Hyperlaxity in the Weight-Training Population.
MedLine Citation:
PMID:  22836608     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
ABSTRACT: Despite case reports implicating anterior instability (AI) as an etiological source of shoulder pain among weight-training (WT) participants, a paucity of case-controlled evidence exists to support this premise. The purpose of this study was to determine if WT participants have clinical characteristics of AI and hyperlaxity. Additionally, we investigated the role of exercise selection. One hundred and fifty-nine healthy male participants (mean age 28) were recruited and included 123 individuals who engaged in WT a minimum of 2 days per week; and 36 controls with no history of WT participation. Prior to testing, participants completed a questionnaire summarizing their training patterns. Upon completing the questionnaire, three reliable and valid tests used to identify clinical characteristics of AI were performed on both groups and included the load & shift, apprehension, and relocation maneuvers. Load & shift test results identified significantly greater anterior GH joint hyperlaxity in the WT group compared to controls (p=.004). The presence of positive apprehension (p < .001) and relocation (p< .001) tests were also significantly greater in the WT group. A significant association existed between performance of exercises that require the "high-five" position (behind the neck latissimus pull-downs and military press) and clinical characteristics of AI. Conversely, an inverse association between performance of external rotator strengthening and clinical characteristics of AI existed. Findings from this study suggest that individuals participating in WT may be predisposed to AI and hyperlaxity. Modification of exercises requiring the high-five position; as well as efforts to strengthen the external rotators may serve as a useful means to mitigate characteristics associated with AI and hyperlaxity. Future intervention based trials are needed to investigate a causative effect of exercises.
Authors:
Morey J Kolber; Melissa Corrao; William J Hanney
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-25
Journal Detail:
Title:  Journal of strength and conditioning research / National Strength & Conditioning Association     Volume:  -     ISSN:  1533-4287     ISO Abbreviation:  -     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-7-27     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9415084     Medline TA:  J Strength Cond Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
2Nova Southeastern University, Department of Physical Therapy, 3200 South University Drive, Ft. Lauderdale, FL 33328, corrao@nova.edu 3Instructor, University of Central Florida, Program in Physical Therapy, HPA 1 - Suite 263, Orlando, FL 32816, Phone 407-823-0217, william.hanney@ucf.edu.
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