Document Detail


Removing swing from a handstand on rings using a properly timed backward giant circle: a simulation solution.
MedLine Citation:
PMID:  9596535     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In the rings event in men's gymnastics, marks are deducted if the rings and gymnast are swinging during a held handstand position. The unwanted swing can be reduced in the next handstand position if the gymnast is able to properly time the start of the connecting giant circle. The purpose of this study was to search for the optimal time to commence a backward giant circle in order to attenuate swing in the succeeding handstand. Computer simulations, using a four-segment and a three-segment model which employed two-pulse muscular control strategies, were used to search for the optimal timing solution. Qualitative validation tests between the performance of a world class gymnast and the simulation models indicated that a three-segment model comprising a cables-rings segment, an arms segment with a shoulder torque generator, and a head-torso-legs segment, produced similar results to that of a four-segment model which separated the legs segment from the torso and employed an additional torque generator at the hip joint. The results from the simulation indicated that a gymnast should be advised to initiate a backward giant circle when his swinging handstand has reached the bottom of its swing-arc. For a handstand with an original swing-amplitude of 10 degrees, the simulation results indicate that a properly timed backward giant circle can reduce this amplitude to a negligible 1.5 degrees of swing.
Authors:
E J Sprigings; J L Lanovaz; L G Watson; K W Russell
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of biomechanics     Volume:  31     ISSN:  0021-9290     ISO Abbreviation:  J Biomech     Publication Date:  1998 Jan 
Date Detail:
Created Date:  1998-07-17     Completed Date:  1998-07-17     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0157375     Medline TA:  J Biomech     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  27-35     Citation Subset:  IM    
Affiliation:
College of Physical Education, University of Saskatchewan, Saskatoon, Canada.
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MeSH Terms
Descriptor/Qualifier:
Biomechanics
Computer Simulation*
Gymnastics*
Humans
Models, Biological*
Movement / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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