Athletes with chronic ankle instability demonstrate altered ankle angle variability during running compared to copers

Beitrag bei einer Tagung
(Abstract zum Vortrag)


Details zur Publikation

Autor(en): Wanner P, Schmautz T, Kluge F, Eskofier B, Pfeifer K, Steib S
Herausgeber: Klostermann, A., Vater, C., & Hossner, E.-J.
Jahr der Veröffentlichung: 2019
Tagungsband: Abstractband zur 16. Jahrestagung der dvs-Sektion Sportmotorik
Sprache: Englisch


Abstract



Introduction

Lateral ankle sprains are
the most common sport injury to the lower extremity, and at least one third of
the affected athletes develop chronic ankle instability (CAI). Changes in ankle
kinematics during running have been demonstrated in CAI compared to uninjured
individuals (Moisan et al., 2017). However, little is known about differences
between individuals with CAI and those who recovered successfully from an
initial ankle sprain (coper). The aim of this study was to compare ankle
kinematics and variability during running between athletes with CAI and copers.

Methods

Thirty-two male
recreational athletes with prior ankle sprain were investigated, eighteen with
CAI (age: 24.7±3.0 years, Cumberland Ankle Instability Tool (CAIT): 21.9±3.4) and
fourteen copers (age: 25.5±3.7 years, CAIT: 28.1±1.7). Running analysis was
performed on an instrumented treadmill at two individual running speeds:
velocity 1 (2.63±0.20 m/s, pace at RPE=14); velocity 2 (3.83±0.20 m/s; first
velocity plus 1.2 m/s). Mean ankle joint kinematics and variability were
analyzed. Variability was calculated as intra-individual stride-to-stride
standard deviation. The statistical parametric mapping (SPM) method, which adjusts
for multiple testing, was applied and effect sizes were calculated to identify
possible group differences.

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 16-19% of the running
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 the
sagittal plane at 34-35%. 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 demonstrated increased variability of ankle kinematics in
the frontal plane, 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.
These findings may indicate altered sensorimotor control adaptations rather
than only mechanical insufficiencies in CAI that may explain feelings of
giving-way and present a potential re-injury risk factor.

References

Moisan, G., Descarreaux, M., & Cantin, V. (2017). Effects of chronic
ankle instability on kinetics, kinematics and muscle activity during walking
and running: A systematic review. Gait & Posture, 52, 381–399.
https://doi.org/10.1016/j.gaitpost.2016.11.037


FAU-Autoren / FAU-Herausgeber

Eskofier, Björn Prof. Dr.
Lehrstuhl für Informatik 14 (Maschinelles Lernen und Datenanalytik)
Kluge, Felix Dr.-Ing.
Lehrstuhl für Informatik 14 (Maschinelles Lernen und Datenanalytik)
Pfeifer, Klaus Prof. Dr.
Lehrstuhl für Sportwissenschaft mit dem Schwerpunkt Bewegung und Gesundheit
Steib, Simon Dr.
Lehrstuhl für Sportwissenschaft mit dem Schwerpunkt Bewegung und Gesundheit
Wanner, Philipp
Lehrstuhl für Sportwissenschaft mit dem Schwerpunkt Bewegung und Gesundheit


Zitierweisen

APA:
Wanner, P., Schmautz, T., Kluge, F., Eskofier, B., Pfeifer, K., & Steib, S. (2019, January). Athletes with chronic ankle instability demonstrate altered ankle angle variability during running compared to copers. Paper presentation at Sportmotorik 2019. Adaptation, Lernen und virtuelle Welten, Bern, CH.

MLA:
Wanner, Philipp, et al. "Athletes with chronic ankle instability demonstrate altered ankle angle variability during running compared to copers." Presented at Sportmotorik 2019. Adaptation, Lernen und virtuelle Welten, Bern Ed. Klostermann, A., Vater, C., & Hossner, E.-J., 2019.

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Zuletzt aktualisiert 2019-01-02 um 16:14

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