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01.10.2014 | Original Article

Decoupling of laxity and cortical activation in functionally unstable ankles during joint loading

verfasst von: Alan R. Needle, C. Buz Swanik, Michael Schubert, Kirsten Reinecke, William B. Farquhar, Jill S. Higginson, Thomas W. Kaminski, Jochen Baumeister

Erschienen in: European Journal of Applied Physiology | Ausgabe 10/2014

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Abstract

Purpose

Recent studies have highlighted central nervous system alterations following ligamentous injury that may contribute to joint instability. However, research has not observed cortical responses to joint loading or sensory changes in the context of joint laxity following injury.

Methods

Forty-two subjects were stratified into healthy (CON), unstable (UNS), and coper (COP) groups using ankle injury and instability history. Event-related desynchronization (%) from electroencephalography quantified somatosensory cortex activity as the ankle was loaded using an arthrometer.

Results

Cortical activation increased as the ankle was loaded (F = 63.05, p < 0.001), but did not differ between groups (F = 1.387, p = 0.268), despite greater laxity in UNS (F = 3.58, p = 0.038).

Conclusions

Increased somatosensory cortex activity was observed with joint loading; however, though UNS demonstrated a degree of mechanical instability, no differences in magnitude of cortical activation were observed. Continued research should explore how the relationship between cortical activation and joint stiffness is affected following ligamentous injury.

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Titel: Decoupling of laxity and cortical activation in functionally unstable ankles during joint loading
verfasst von: Alan R. Needle
C. Buz Swanik
Michael Schubert
Kirsten Reinecke
William B. Farquhar
Jill S. Higginson
Thomas W. Kaminski
Jochen Baumeister
Publikationsdatum: 01.10.2014
Verlag: Springer Berlin Heidelberg
Erschienen in: European Journal of Applied Physiology / Ausgabe 10/2014
Print ISSN: 1439-6319
Elektronische ISSN: 1439-6327
DOI: https://doi.org/10.1007/s00421-014-2929-3

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Decoupling of laxity and cortical activation in functionally unstable ankles during joint loading

Abstract

Purpose

Methods

Results

Conclusions

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Elterliches Belastungserleben, Unaufmerksamkeits‑/Hyperaktivitätssymptome und elternberichtete ADHS bei Kindern und Jugendlichen: Ergebnisse aus der KiGGS-Studie

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Berufsbelastung und Stressbewältigung von weiblichen und männlichen Auszubildenden

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Springer Medizin

Abstract

Purpose

Methods

Results

Conclusions

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