Ankle angle variability during running in athletes with chronic ankle instability and copers

Background: Individuals with chronic ankle instability (CAI) demonstrate altered ankle kinematics during running compared to uninjured individuals; however, little is known about differences between individuals with CAI and those who recover successfully from an index sprain (copers). Methods: Thirt...

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Hauptverfasser: Wanner, Philipp (VerfasserIn) , Schmautz, Thomas (VerfasserIn) , Kluge, Felix (VerfasserIn) , Eskofier, Björn (VerfasserIn) , Pfeifer, Klaus (VerfasserIn) , Steib, Simon (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: February 2019
In: Gait & posture
Year: 2019, Jahrgang: 68, Pages: 329-334
ISSN:1879-2219
DOI:10.1016/j.gaitpost.2018.11.038
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.gaitpost.2018.11.038
Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S096663621830345X
Volltext
Verfasserangaben:Philipp Wanner, Thomas Schmautz, Felix Kluge, Björn Eskofier, Klaus Pfeifer, Simon Steib

MARC

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520 |a Background: Individuals with chronic ankle instability (CAI) demonstrate altered ankle kinematics during running compared to uninjured individuals; however, little is known about differences between individuals with CAI and those who recover successfully from an index sprain (copers). Methods: Thirty-two young male athletes with prior ankle sprain were investigated, eighteen with CAI and fourteen copers. Instrumented running analysis was performed on a treadmill at two velocities: moderate (2.63 ± 0.20 m/s, rate of perceived of exertion = 14/20); and high velocity (3.83 ± 0.20 m/s). Mean ankle kinematics and stride-to-stride variability were analyzed applying the statistical parametric mapping method. Results: At both running velocities, no statistically significant differences in mean ankle kinematics were observed. At high running velocity, athletes with CAI demonstrated significantly increased frontal plane variability at 17-19% of the running gait cycle (p = 0.009). Additionally, large between-group effect sizes (Hedges’ g ≥ 0.8) may potentially indicate increased frontal plane variability during initial contact and terminal swing, as well as decreased variability in sagittal plane at 34-35% in CAI. A similar tendency existed at moderate velocity, with large effect sizes indicating decreased dorsiflexion at 75-89% in CAI, as well as an increased frontal plane variability at 16-25%, and 97-99%. Discussion: Compared to copers, individuals with CAI demonstrate increased variability of ankle kinematics - mainly in the frontal plane and particularly during stance phase - while mean ankle kinematics seems minimally affected. Increased ankle variability at high running velocity may best reflect persisting sensorimotor control deficits in athletes with chronically instable ankles. 
650 4 |a Ankle sprain 
650 4 |a Kinematics 
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