The influence of ankle dorsiflexion and self-reported patient outcomes on dynamic postural control in participants with chronic ankle instability.
We investigated the influence of ankle dorsiflexion range of motion (DF-ROM) and self-reported patient outcomes on dynamic postural control assessed with the Star Excursion Balance Test (SEBT) in individuals with chronic ankle instability (CAI). Twenty-nine participants with self-reported CAI volunteered. The primary outcome measurements were categorized into clinician-and patient-generated. Clinician-generated outcome measurements included anterior (SEBT-A), posteriormedial (SEBT-PM) and posteriorlateral (SEBT-PL) reach distances (cm) normalized by leg length (cm) of the SEBT, maximum weight-bearing dorsiflexion (WB-DF) (cm), and open-chain DF-ROM (°). Self-reported patient-generated outcome measures included the foot and ankle ability measure and the level of perceived pain, stiffness, stability, and function of their involved ankle on a 10-cm visual analog scale (VAS). Pearson product moment correlations were used to examine the relationship of the SEBT performances with DF-ROM and self-reported patient outcome measures. A multiple linear regression was performed to determine the influence of patient- and clinician-generated measures on the SEBT. SEBT-A performance was significantly and fairly correlated with WB-DF (r=0.410, p=0.014), perceived ankle stiffness (r=0.477, p=0.014), and open-chain DF-ROM (r=0.404, p=0.015). The strongest predictor of the variance in SEBT-A was the combination of the variance in WB-DF and VAS-stiffness (R2=0.348, p=0.004). There were no significant correlations with the SEBT-PM and SEBT-PL. WB-DF and VAS-stiffness may represent targets for intervention that need to be addressed to produce the best outcome in participants with CAI when altered dynamic postural control is detected on the SEBT-A.
Musculoskeletal Health and Movement Science Laboratory, Department of Kinesiology, University of Toledo, Toledo, OH, United States. Electronic address: mterada@rockets.utoledo.edu.
Masafumi
M
Terada
Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.
Matthew S
MS
Harkey
Musculoskeletal Health and Movement Science Laboratory, Department of Kinesiology, University of Toledo, Toledo, OH, United States.
Ashley M
AM
Wells
Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.
Brian G
BG
Pietrosimone
Musculoskeletal Health and Movement Science Laboratory, Department of Kinesiology, University of Toledo, Toledo, OH, United States.
Phillip A
PA
Gribble
D000328:Adult; D000842:Ankle / Q000503:physiopathology*; D018771:Arthralgia / Q000209:etiology / Q000503:physiopathology; D005081:Exercise Therapy; D005260:Female; D006801:Humans; D007593:Joint Instability / Q000150:complications / Q000503:physiopathology* / Q000534:rehabilitation; D016014:Linear Models; D008297:Male; D010147:Pain Measurement; D004856:Postural Balance / Q000502:physiology*; D016059:Range of Motion, Articular / Q000502:physiology*; D057566:Self Report; D013639:Tarsal Bones; D016474:Weight-Bearing / Q000502:physiology; D055815:Young Adult
Patient outcome assessment; Postural balance; Range of motion