Hip abductor muscle weakness in individuals with gluteal tendinopathy

Allison, Kim, Vicenzino, Bill, Wrigley, Tim V., Grimaldi, Alison, Hodges, Paul W. and Bennell, Kim L. (2016) Hip abductor muscle weakness in individuals with gluteal tendinopathy. Medicine and Science in Sports and Exercise, 48 3: 346-352. doi:10.1249/MSS.0000000000000781

Author Allison, Kim
Vicenzino, Bill
Wrigley, Tim V.
Grimaldi, Alison
Hodges, Paul W.
Bennell, Kim L.
Title Hip abductor muscle weakness in individuals with gluteal tendinopathy
Journal name Medicine and Science in Sports and Exercise   Check publisher's open access policy
ISSN 1530-0315
Publication date 2016-03-01
Sub-type Article (original research)
DOI 10.1249/MSS.0000000000000781
Volume 48
Issue 3
Start page 346
End page 352
Total pages 7
Place of publication Philadelphia, United States
Publisher Lippincott Williams and Wilkins
Language eng
Formatted abstract
Purpose: This study aimed to compare hip abductor muscle strength between individuals with symptomatic, unilateral gluteal tendinopathy (GT), and asymptomatic controls.

Methods: Fifty individuals with GT age between 35 and 70 yr and 50 sex- and age-comparable controls were recruited from the community. Maximal isometric strength (torque normalized to body mass) of the hip abductors was recorded in the supine position using an instrumented manual muscle tester. A two-way mixed ANCOVA, with covariates of self-reported pain during testing and pain limiting maximum effort, was used to compare hip abductor strength of the symptomatic and asymptomatic hip between GT and control individuals. Data were expressed as mean and SD, with the pairwise comparisons expressed as mean differences and 95% confidence intervals.

Results: Individuals with GT demonstrated significantly lower hip abductor torque of both their symptomatic and asymptomatic hip than healthy controls (both P < 0.05), with mean strength deficits of 0.35 N·m·kg-1 (32%) on the symptomatic hip and 0.25 N·m·kg-1 (23%) on the asymptomatic hip. In individuals with GT, the symptomatic hip was significantly weaker than the asymptomatic hip with a mean strength deficit of 0.09 N·m·kg-1 (11%) (P < 0.05).

Conclusions: People with unilateral GT demonstrate significant weakness of the hip abductor muscles bilaterally when compared with healthy controls. Although it is not clear whether hip weakness precedes GT or is a consequence of the condition, the findings provide a basis to consider hip abductor muscle weakness in the treatment plan for management of GT.
Keyword Dynamometer
Greater trochanteric pain
Muscle testing
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
School of Health and Rehabilitation Sciences Publications
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