Is chronic ankle instability associated with impaired muscle strength? Ankle, knee and hip muscle strength in individuals with chronic ankle instability: a systematic review with meta-analysis.

Autor:	Khalaj N; School of Health and Rehabilitation Sciences, University of Queensland, Brisbane, Queensland, Australia., Vicenzino B; School of Health and Rehabilitation Sciences, University of Queensland, Brisbane, Queensland, Australia., Heales LJ; Health and Exercise Science, Central Queensland University, Rockhampton, Queensland, Australia.; School of Biomedical Sciences, The University of Queensland, Brisbane, Queensland, Australia., Smith MD; School of Health and Rehabilitation Sciences, University of Queensland, Brisbane, Queensland, Australia m.smith5@uq.edu.au.
Jazyk:	angličtina
Zdroj:	British journal of sports medicine [Br J Sports Med] 2020 Jul; Vol. 54 (14), pp. 839-847. Date of Electronic Publication: 2020 Jan 14.
DOI:	10.1136/bjsports-2018-100070
Abstrakt:	Objective: Determine whether impairments in lower limb muscle strength exist in individuals with chronic ankle instability (CAI) compared with uninjured controls. Design: Systematic review with meta-analysis. Data Source: A comprehensive search of PubMed, Cochrane, CINAHL, Web of Science and EMBASE electronic databases from inception to 10 February 2019. Eligibility Criteria for Selecting Studies: Cross-sectional and case-control studies were included if they objectively measured lower limb muscle strength in individuals with CAI compared with controls. Risk of bias and quality of included studies were assessed. Data of included studies were extracted, and meta-analysis was conducted where appropriate. Results: 12 397 unique studies were identified, of which 20 were included and 16 were eligible for meta-analysis. Reviewed studies clearly described the aim/hypothesis and main outcome measure, but most lacked sample size calculation and assessor blinding. Meta-analyses showed individuals with CAI had lower eccentric and concentric evertor strength (30 and 120°/s; Nm; standardised mean difference (SMD) between -0.73 and -0.95), eccentric invertor strength (60 and 120°/s; both Nm and Nm/kg; SMD between -0.61 and -1.37), concentric invertor strength (60 and 120°/s; Nm; SMD=-0.7) and concentric knee extensor strength (SMD=-0.64) compared with control participants. Ankle eccentric dorsiflexor strength was not different between groups. Although pooling was not possible, data from three separate studies indicated that hip flexor, abductor and external rotator strength, but not hip adductor and extensor strength, was lower in individuals with CAI than in control participants. Conclusion: Individuals with CAI have ankle inversion and eversion strength deficits. Our data also point to differences between individuals with CAI and controls in hip and knee strength. These elements of the kinetic chain should be evaluated by clinicians who rehabilitate individuals with CAI. Prospero Registration Number: CRD42016037759. Competing Interests: Competing interests: None declared. (© Author(s) (or their employer(s)) 2020. No commercial re-use. See rights and permissions. Published by BMJ.)
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu