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Increased supraspinatus tendon thickness following fatigue loading in rotator cuff tendinopathy: potential implications for exercise therapy

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Show simple item record McCreesh, Karen Purtill, Helen Donnelly, Alan Edward Lewis, Jeremy S. 2018-01-03T11:34:41Z 2018-01-03T11:34:41Z 2017
dc.description peer-reviewed en_US
dc.description.abstract Background/aim Exercise imparts a load on tendon tissue that leads to changes in tendon properties. Studies suggest that loading immediately reduces tendon thickness, with a loss of this response in symptomatic tendinopathy. No studies investigating the response of tendon dimensions to load for the rotator cuff tendons exist. This study aimed to examine the short-term effect of loading on the thickness of the supraspinatus tendon and acromiohumeral distance those with and without rotator cuff tendinopathy. Methods Participants were 20 painfree controls, and 23 people with painful rotator cuff tendinopathy. Supraspinatus tendon thickness and acromiohumeral distance were measured using ultrasound scans before, and at three time points after loading (1, 6 and 24 hours). Loading involved isokinetic eccentric and concentric external rotation and abduction. Results There was a significant increase in supraspinatus tendon thickness in the pain group at 1 (7%, Δ=0.38, 95% CI 0.19 to 0.57) and 6 hours (11%, Δ=0.53, 95% CI 0.34 to 0.71), although only the 6 hours difference exceeded minimal detectable difference. In contrast, there was a small non-significant reduction in thickness in controls. The acromiohumeral distance reduced significantly in both groups at 1 hour (controls: Δ=0.64, 95% CI 0.38 to 0.90; pain: Δ=1.1, 95% CI 0.85 to 1.33), with a larger change from baseline in the pain group. Conclusion Those diagnosed with painful supraspinatus tendinopathy demonstrated increased thickening with delayed return to baseline following loading. Rehabilitation professionals may need to take into account the impact of loading to fatigue when planning rehabilitation programmes. en_US
dc.language.iso eng en_US
dc.publisher BMJ Publishing Group en_US
dc.relation.ispartofseries BMJ;3:e000279
dc.subject increased en_US
dc.subject supraspinatus en_US
dc.subject tendon en_US
dc.subject thickness en_US
dc.subject fatigue en_US
dc.subject rotator en_US
dc.subject cuff tendinopathy en_US
dc.subject potential implications en_US
dc.subject exercise therapy en_US
dc.title Increased supraspinatus tendon thickness following fatigue loading in rotator cuff tendinopathy: potential implications for exercise therapy en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.identifier.doi 10.1136/bmjsem-2017-000279
dc.contributor.sponsor HRB en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US
dc.internal.rssid 2895479

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