Article

The purpose of this study was to determine the contributions of strength,
dorsiflexion range of motion (DFROM), plantar cutaneous sensation (PCS), and
static postural control to Star Excursion Balance Test (SEBT) performance in
individuals with chronic ankle instability (CAI). Forty individuals with CAI
completed isometric strength, weight-bearing DFROM, PCS, static and dynamic
balance assessments. Three separate backward multiple linear regression models
were calculated to determine how strength, DFROM, PCS, and static postural
control contributed to each reach direction of the SEBT. Explanatory variables
included dorsiflexion, inversion, and eversion strength, DFROM, PCS, and
time-to-boundary mean minima (TTBMM) and standard deviation (TTBSD) in the
medial-lateral (ML) and anterior-posterior (AP) directions. Criterion variables
included SEBT-anterior, posteromedial, and posterolateral directions. The
strength of each model was determined by the R2-value and Cohen's f2 effect size.
Regression models with an effect size >/=0.15 were considered clinically
relevant. All three SEBT directions produced clinically relevant regression
models. DFROM and PCS accounted for 16% of the variance in SEBT-anterior reach
(f2=0.19, p=0.04). Eversion strength and TTBMM-ML accounted for 28% of the
variance in SEBT-posteromedial reach (f2=0.39, p<0.01). Eversion strength and
TTBSD-ML accounted for 14% of the variance in SEBT-posterolateral reach (f2=0.16,
p=0.06). DFROM and PCS explained a clinically relevant proportion of the variance
associated with SEBT-anterior reach. Eversion strength and TTB ML explained a
clinically relevant proportion of the variance in SEBT-posteromedial and
posterolateral reach distances. Therefore, rehabilitation strategies should
emphasize DFROM, PCS, eversion strength, and static balance to enhance dynamic
postural control in patients with CAI.
CI - Copyright (c) 2015 Elsevier B.V. All rights reserved.

Langue : ANGLAIS