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Title: Differentiation of ankle sprain motion and common sporting motion by ankle inversion velocity
Authors: Chu, Vikki Wing-Shan
Fong, Daniel Tik-Pui
Chan, Yue-Yan
Yung, Patrick Shu-Hang
Fung, Kwai-Yau
Chan, Kai-Ming
Keywords: Ankle sprain
Issue Date: 2010
Publisher: © Elsevier
Citation: CHU, V.W-S. ...et al., 2010. Differentiation of ankle sprain motion and common sporting motion by ankle inversion velocity. Journal of Biomechanics, 43(10), pp. 2035-2038.
Abstract: This study investigated the ankle inversion and inversion velocity between various common motions in sports and simulated sprain motion, in order to provide a threshold for ankle sprain risk identification. The experiment was composed of two parts: Firstly, ten male subjects wore a pair of sport shoes and performed ten trials of running, cutting, jump-landing and stepping-down motions. Secondly, five subjects performed five trials of simulated sprain motion by a supination sprain simulator. The motions were analyzed by an eight-camera motion capture system at 120. Hz. A force plate was employed to record the vertical ground reaction force and locate the foot strike time for common sporting motions. Ankle inversion and inversion velocity were calculated by a standard lower extremity biomechanics calculation procedure. Profiles of vertical ground reaction force, ankle inversion angle and ankle inversion velocity were obtained. Results suggested that the ankle was kept in an everted position during the stance. The maximum ankle inversion velocity ranged from 22.5 to 85.1°/s and 114.0 to 202.5°/s for the four tested motions and simulated sprain motion respectively. Together with the ankle inversion velocity reported in the injury case (623°/s), a threshold of ankle inversion velocity of 300°/s was suggested for the identification of ankle sprain. The information obtained in this study can serve as a basis for the development of an active protection apparatus for reducing ankle sprain injury. © 2010 Elsevier Ltd.
Description: This paper was accepted for publication in the journal Journal of Biomechanics and the definitive published version is available at http://dx.doi.org/10.1016/j.jbiomech.2010.03.029
Sponsor: The Innovation Technology Fund from the Innovation and Technology Commission, Hong Kong Special Administrative Region Government also financially supported the project. (Project no: ITS/013/07)
Version: Accepted
DOI: 10.1016/j.jbiomech.2010.03.029
URI: https://dspace.lboro.ac.uk/2134/21073
Publisher Link: http://dx.doi.org/10.1016/j.jbiomech.2010.03.029
ISSN: 0021-9290
Appears in Collections:Published Articles (Sport, Exercise and Health Sciences)

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