The regulation of release parameters in underarm precision throwing

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Bibliographische Detailangaben
Deutscher übersetzter Titel:Die Kontrolle von Bewegungsparametern des Abwurfs bei Unterarm-Zielwuerfen
Autor:Dupuy, M.A.; Mottet, D.; Ripoll, H.
Erschienen in:Journal of sports sciences
Veröffentlicht:18 (2000), 6, S. 375-382, Lit.
Format: Literatur (SPOLIT)
Publikationstyp: Zeitschriftenartikel
Medienart: Gedruckte Ressource
Sprache:Englisch
ISSN:0264-0414, 1466-447X
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Erfassungsnummer:PU199912408039
Quelle:BISp

Abstract des Autors

The aim of this study was to determine if adults spontaneously exploit the laws of physics to achieve better accuracy when throwing at various distances. Eight adults performed 25 underarm throws at five horizontal circular targets located 4, 5, 6, 7 and 8 m away with a constant 5% relative accuracy requirement. Angle and speed of the ball at release were found to increase with throwing distance, while the coordinates of the release point did not change significantly. These results support the idea that people minimize the variability in impact distance by adapting both the angle and the speed at ball release following a mechanical optimum predicted by the laws of physics. Moreover, variability in distance was found to be less than expected because of independent variations in the angle and speed at ball release. Hence, the control of precision throwing seems to imply compensatory variability, as frequently reported in the control of skilled actions. Verf.-Referat