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J. Funct. Morphol. Kinesiol. 2018, 3(3), 48; https://doi.org/10.3390/jfmk3030048

The Uncontrolled Manifold Concept Reveals That the Structure of Postural Control in Recurve Archery Shooting Is Related to Accuracy

1
Vrije Universiteit Brussel, Faculteit Lichamelijke Opvoeding en Kinesitherapie, dept. Movement and Sport Sciences, 1050 Brussels, Belgium
2
Universiteit Antwerpen, Faculteit Toegepaste Ingenieurswetenschappen, dept. Electronics and ICT, 2000 Antwerp, Belgium
3
Thim Van Der Laan University College Physiotherapy, 7302 Landquart, Switzerland
*
Author to whom correspondence should be addressed.
Received: 15 August 2018 / Revised: 14 September 2018 / Accepted: 15 September 2018 / Published: 17 September 2018
(This article belongs to the Section Kinesiology and Biomechanics)
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Abstract

In this study, we examine the structure of postural variability in six elite-level recurve archers using the uncontrolled manifold concept. Previous research showed equivocal results for the relationship between postural control and shooting accuracy, but these studies were mainly limited to a descriptive approach to postural variability/stability and did not take the simultaneous movements of the upper limb joints into account. In this study, we show that the goal-equivalent variability which stabilizes the orientation of the arrow in space is significantly larger than that of the non-goal-equivalent variability in arrows of high accuracy (score 9 or 10). Conversely, arrows of lower accuracy (score 6, 7, or 8) failed to reach significant thresholds throughout the majority of the aiming phase. This analysis reveals that it is not necessary (or even possible) for elite archers to minimize the movements of all degrees of freedom during aiming, but rather that the structure of variability of the redundant kinematic chain is exploited so that the relevant performance variable (orientation of the arrow) is stabilized. View Full-Text
Keywords: archery; shooting; postural control; accuracy; uncontrolled manifold; motor abundance archery; shooting; postural control; accuracy; uncontrolled manifold; motor abundance
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Serrien, B.; Witterzeel, E.; Baeyens, J.-P. The Uncontrolled Manifold Concept Reveals That the Structure of Postural Control in Recurve Archery Shooting Is Related to Accuracy. J. Funct. Morphol. Kinesiol. 2018, 3, 48.

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J. Funct. Morphol. Kinesiol. EISSN 2411-5142 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
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