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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| Main Authors: | , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
February 2019
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| In: |
Gait & posture
Year: 2019, Volume: 68, Pages: 329-334 |
| ISSN: | 1879-2219 |
| DOI: | 10.1016/j.gaitpost.2018.11.038 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.gaitpost.2018.11.038 Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S096663621830345X 
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| Author Notes: | Philipp Wanner, Thomas Schmautz, Felix Kluge, Björn Eskofier, Klaus Pfeifer, Simon Steib |
| Summary: | 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. |
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| Item Description: | Available online 4 December 2018 Gesehen am 13.07.2022 |
| Physical Description: | Online Resource |
| ISSN: | 1879-2219 |
| DOI: | 10.1016/j.gaitpost.2018.11.038 |