Gittoes, M. and Irwin, G. and Mullineaux, David and Kirwin, David G. (2011) Whole-body and multi-joint kinematic control strategy variability during backward rotating dismounts from beam. Journal of Sports Sciences, 29 (10). pp. 1051-1058. ISSN 0264-0414

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Abstract

The aim of this study was to develop insight into the whole-body and multi-joint kinematic control strategy variability associated with the execution of fundamental backward rotating dismounts from beam. Two-dimensional joint centre coordinate data were obtained for ten backward piked and backward tucked somersault dismount skills performed by four female gymnasts (N¼80 trials). Gymnast-specific and group variability in whole-body and multi-joint discrete kinematic measures were compared for the aerial and impact phase of backward piked and backward tucked skills. The backward tucked skill was executed using a more variable knee joint angular velocity at take-off (mean difference in standard deviation+SD:72.6+1.0 rad s71; P50.01) than the backward piked skill. The variability in the whole-body and multijoint kinematic responses produced between the impact phases of each skill was gymnast-specific. The greater variability in the localized knee joint action at take-off was considered indicative of the diverse shape element demands and key performance outcomes of the two skills. Self-selected modulations to the multi-joint kinematic strategy used in the impact phase suggested customization of the joint loading adjustments in executing the fundamental dismount skills.

Item Type:	Article
Additional Information:	The aim of this study was to develop insight into the whole-body and multi-joint kinematic control strategy variability associated with the execution of fundamental backward rotating dismounts from beam. Two-dimensional joint centre coordinate data were obtained for ten backward piked and backward tucked somersault dismount skills performed by four female gymnasts (N¼80 trials). Gymnast-specific and group variability in whole-body and multi-joint discrete kinematic measures were compared for the aerial and impact phase of backward piked and backward tucked skills. The backward tucked skill was executed using a more variable knee joint angular velocity at take-off (mean difference in standard deviation+SD:72.6+1.0 rad s71; P50.01) than the backward piked skill. The variability in the whole-body and multijoint kinematic responses produced between the impact phases of each skill was gymnast-specific. The greater variability in the localized knee joint action at take-off was considered indicative of the diverse shape element demands and key performance outcomes of the two skills. Self-selected modulations to the multi-joint kinematic strategy used in the impact phase suggested customization of the joint loading adjustments in executing the fundamental dismount skills.
Keywords:	Gymnastics, aerial phase, impact phase, refdoi, ref26d
Subjects:	C Biological Sciences > C600 Sports Science
Divisions:	College of Social Sciences > Faculty of Health & Social Sciences > School of Sport & Exercise Science
Depositing User:	Alison Wilson
Date Deposited:	08 Oct 2011 13:52
Last Modified:	18 Apr 2013 16:10
URI:	http://eprints.lincoln.ac.uk/id/eprint/4714

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