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Quantifying levels of function between different subgroups of chronic ankle instability
Author(s) -
Terada M.,
Bowker S.,
Hiller C. E.,
Thomas A. C.,
Pietrosimone B.,
Gribble P. A.
Publication year - 2017
Publication title -
scandinavian journal of medicine and science in sports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.575
H-Index - 115
eISSN - 1600-0838
pISSN - 0905-7188
DOI - 10.1111/sms.12712
Subject(s) - ankle , medicine , analysis of variance , ankle sprain , physical therapy , physical medicine and rehabilitation , surgery
The purpose of this original investigation was to determine if selected sensorimotor, mechanical, and self‐reported measures are different among chronic ankle instability ( CAI ) subgroups, healthy control participants, and lateral ankle sprain copers ( LAS ‐Copers). Ninety‐four participants volunteered and were categorized into perceived ankle instability ( PI ) alone ( n = 13), recurrent ankle sprains ( RAS ) alone ( n = 12), PI in combination with RAS ( PI ‐ RAS ; n = 25), LAS ‐Copers ( n = 18), and controls ( n = 26). Participants completed self‐assessed global, regional, and psychological health‐related quality‐of‐life ( HRQOL ) questionnaires and assessments of sensorimotor function and mechanical joint laxity. One‐way ANOVA s were performed with the intention of reducing the number of original outcomes into a smaller number of predictor variables. Discriminant functional analysis was used to establish which specific measures best differentiate between groups. Eight outcome measures from neural excitability, postural control, static postural control, and HRQOL showed a significant differentiation between five groups (Wilk's λ = 0.26, χ 2 32 = 114 45, P < 0.001, canonical correlation = 0.80) and correctly determined only 58.1% of group membership, and the PI ‐ RAS and control groups were the only fit in the proposed model. A different model or other sensorimotor outcomes from more dynamic and complex tasks may be needed for the PI , RAS , and LAS ‐Coper groups.