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Upper and lower trapezius muscle activity in subjects with subacromial impingement symptoms: Is there imbalance and can taping change it?

Smith, Michael, Sparkes, Valerie, Busse, Monica and Enright, Stephanie 2009. Upper and lower trapezius muscle activity in subjects with subacromial impingement symptoms: Is there imbalance and can taping change it? Physical Therapy in Sport 10 (2) , pp. 45-50. 10.1016/j.ptsp.2008.12.002

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Abstract

Objectives: To investigate (i) whether subacromial impingement symptoms (SIS) were associated with upper and lower trapezius muscle imbalance and (ii) the effect of a scapula taping technique on upper and lower trapezius muscle activity. Design: Cross-sectional study with nested within-subject intervention. Setting: University research laboratory. Participants: Subjects who demonstrated SIS (n = 16) on clinical testing and an age and gender matched group of asymptomatic subjects (n = 32). Main outcome measures: Surface electromyography (EMG) to measure activity in the upper (UFT) and lower (LFT) fibres of trapezius during repeated humeral elevation in the scapular plane. Results: Symptomatic subjects demonstrated a significantly (95% CI 2.13 to 4.17, p = 0.019) higher ratio of UFT:LFT activity than the asymptomatic subjects (95% CI 1.35 to 2.25). With tape in situ the symptomatic subjects demonstrated a significant (95% CI -8.6% to -17.3%, p < 0.001) reduction in UFT activity but no significant (95% CI +2.8% to -17.5%, p = 0.145) change in activity of LFT. No relationship (r= - 0.116, p = 0.669) was found between the degree of underlying muscle imbalance and the reduction in UFT under the taped condition for the symptomatic group. Conclusion: Subacromial impingement symptoms are associated with altered upper and lower trapezius muscle activity which can be partially addressed by the application of tape.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Healthcare Sciences
Subjects: R Medicine > R Medicine (General)
R Medicine > RC Internal medicine > RC1200 Sports Medicine
R Medicine > RM Therapeutics. Pharmacology
Uncontrolled Keywords: Taping ; Scapular rotator imbalance ; Subacromial impingement syndrome ; Physiotherapy
Additional Information: Identified as being one of the 'top 10 hottest downloads' for the Journal in Hudson Z. (2010) 'Ten year celebration - a decade of progress for Physical Therapy in Sport.' Physical Therapy in Sport. Volume 11, Issue 1, Pages 1-2.
Publisher: Elsevier
ISSN: 1466-853X
Last Modified: 04 Apr 2018 20:28
URI: http://orca.cf.ac.uk/id/eprint/14451

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