The biomechanics of twisting somersaults Part II: Contact twist

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Bibliographische Detailangaben
Deutscher übersetzter Titel:Die Biomechanik von Schraubensalti Teil II: Drehung in der Kontaktphase
Autor:Yeadon, M.R.
Erschienen in:Journal of sports sciences
Veröffentlicht:11 (1993), 3, S. 199-208, Lit.
Format: Literatur (SPOLIT)
Publikationstyp: Zeitschriftenartikel
Medienart: Gedruckte Ressource
Sprache:Englisch
ISSN:0264-0414, 1466-447X
Schlagworte:
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Erfassungsnummer:PU199404067059
Quelle:BISp

Abstract

A simulation model and a rigid body model are used to investigate twisting initiated during the take-off or contact phase. It is shown that it is possible to producea full twist solely by building up angular momentum in the arms during the contact phase. This method is only half as effective as building up momentum in the whole body during contact. The introduction of twist into a somersault changes the somersault rate by less than 1. By timing arm adduction appropriately, it is possible to take advantageof nutation and boost the initial value of the tilt angle and so obtain a greater twist rate. Twist may be stopped by the action of piking, since the motion changes from the twisting mode to the wobbling mode of rigid body motion. Transition to and from these two modes can be used to increase or decrease the tilt angle and twist rate. Verf.-Referat