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  5. Acute ankle sprain injury alters kinematic and centre of pressure measures of postural control during single limb stance
 
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Acute ankle sprain injury alters kinematic and centre of pressure measures of postural control during single limb stance

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Alternative Title
Acute ankle sprain alters postural control strategies during single limb stance
Author(s)
Doherty, Cailbhe 
Delahunt, Eamonn 
Bleakley, Chris J. 
Hertel, Jay 
Ryan, John 
Caulfield, Brian 
Uri
http://hdl.handle.net/10197/8568
Date Issued
12 April 2014
Date Available
09T09:44:25Z June 2017
Abstract
Background: Upright single-limb stance (SLS) is maintained via integration of visual, vestibular and somatosensory afferents. The presence of redundancies between these afferents allows the sensorimotor system to simplify a specific task within a number of strategies. Musculoskeletal injury challenges the somatosensory system to reweight distorted sensory afferents. No current investigation has supplemented kinetic analysis of eyes-open and eyes-closed SLS tasks with a kinematic profile of lower limb postural orientation in an acute lateral ankle sprain (LAS) group to assess the adaptive capacity of the sensorimotor system to injury. Objective: To compare centre of pressure (COP) and lower limb postural orientation characteristics of participants with acute LAS to non-injured participants during a SLS task. Design Cross-sectional: Setting University biomechanics laboratory. Participants: 66 participants with acute LAS completed a task of eyes-open SLS on their injured and non-injured limbs (task 1). 23 of these participants successfully completed the SLS task with their eyes closed (task 2). A non-injured control group of nineteen participants completed task 1, with 16 completing task 2. Main outcome measures: 3D kinematics of the hip, knee and ankle joints as well as associated fractal dimension (FD) of the COP path. Results: Between trial analyses of groups revealed significant differences in lower limb kinematics and FD of the COP path for task 2. Post-hoc testing revealed that non-injured control group bilaterally assumed a position of greater hip flexion compared to LAS participants (injured limb=7.41±6.1◦ vs 1.44±4.8◦; non-injured limb=9.59±8.5◦ vs 2.16±5.6◦), with a corollary of greater FD of the COP path (injured limb=1.39±0.16 vs 1.25±0.14; non-injured limb=1.37±0.21 vs 1.23±0.14). Conclusion: Acute LAS causes bilateral impairment in postural control strategies.
Sponsorship
Health Research Board
Type of Material
Conference Publication
Publisher
BMJ Publishing
Journal
British Journal of Sports Medicine
Volume
48
Issue
7
Copyright (Published Version)
2014 the Authors
Keywords
  • Biomechanics

  • Ankle joint

  • Kinetics

  • Kinematics

  • Postural balance

DOI
10.1136/bjsports-2014-093494.72
Language
English
Status of Item
Peer reviewed
Part of
British Journal of Sports Medicine 48(7): 586 (2014)
This item is made available under a Creative Commons License
https://creativecommons.org/licenses/by-nc-nd/3.0/ie/
Owning collection
Insight Research Collection
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