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dc.contributor.authorLoureiro, Aderson
dc.contributor.authorConstantinou, Maria
dc.contributor.authorBeck, Belinda
dc.contributor.authorBarrett, Rod S
dc.contributor.authorDiamond, Laura E
dc.date.accessioned2019-07-11T03:03:09Z
dc.date.available2019-07-11T03:03:09Z
dc.date.issued2019
dc.identifier.issn1471-2474
dc.identifier.doi10.1186/s12891-019-2668-z
dc.identifier.urihttp://hdl.handle.net/10072/385819
dc.description.abstractBACKGROUND: Reductions in lower extremity muscle strength, size and quality and increased fat content have been reported in advanced hip osteoarthritis (OA). Whether these differences are also evident at earlier stages of the disease and the extent to which they might develop over time is unclear. The main purpose of this 12-month exploratory prospective study was to compare changes in muscle and fat characteristics in individuals with mild-to-moderate hip OA and healthy controls. METHODS: Fourteen individuals with mild-to-moderate symptomatic and radiographic hip OA (n = 9 unilateral; n = 5 bilateral), and 15 healthy controls similar in age and sex without symptoms or radiographic hip OA were assessed at baseline and at 12-month follow-up. Maximal voluntary isometric strength of the hip and knee muscle groups was assessed using an isokinetic dynamometer. Lower extremity lean and fat mass were assessed using dual-energy x-ray absorptiometry, and thigh muscle and fat areas and thigh muscle density were assessed using peripheral quantitative computed tomography. RESULTS: Knee extension (p = 0.01), hip extension (p < 0.01), hip flexion (p = 0.03), and hip abduction (p < 0.01) strength, lower extremity lean mass (p < 0.01), thigh muscle area (p = 0.03), and thigh muscle density (p < 0.01) were significantly lower in hip OA compared to controls. Hip extension (p < 0.05), hip flexion (p = 0.03), and hip abduction (p = 0.03) strength significantly declined over the follow-up period in the hip OA group. CONCLUSIONS: Pre-existing deficits in hip muscle strength in individuals with mild-to-moderate hip OA were accentuated over 12-months, though no changes in symptoms or joint structure were observed. A longer follow-up period is required to establish whether strength deficits drive clinical and structural decline in these patients. Interventions to prevent or slow declines in strength may be relevant in the management of mild-to-moderate hip OA.
dc.description.peerreviewedYes
dc.languageEnglish
dc.publisherBMC
dc.relation.ispartoflocationEngland
dc.relation.ispartofpagefrom283
dc.relation.ispartofissue1
dc.relation.ispartofjournalBMC MUSCULOSKELETAL DISORDERS
dc.relation.ispartofvolume20
dc.subject.fieldofresearchClinical sciences
dc.subject.fieldofresearchAllied health and rehabilitation science
dc.subject.fieldofresearchSports science and exercise
dc.subject.fieldofresearchcode3202
dc.subject.fieldofresearchcode4201
dc.subject.fieldofresearchcode4207
dc.titleA 12-month prospective exploratory study of muscle and fat characteristics in individuals with mild-to-moderate hip osteoarthritis
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dcterms.licensehttp://creativecommons.org/licenses/by/4.0/
dc.description.versionVersion of Record (VoR)
gro.rights.copyright© The Author(s). 2019 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
gro.hasfulltextFull Text
gro.griffith.authorDiamond, Laura
gro.griffith.authorBarrett, Rod
gro.griffith.authorBeck, Belinda R.


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