Effects of take-off vigour and accuracy on jump length in ski-jumping

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Deutscher übersetzter Titel:Auswirkungen von Impuls und Bewegungsgenauigkeit beim Absprung auf die Sprungweite beim Skispringen
Autor:Vaverka, F.; Krskova, M.; Elfmark, M.; Salinger, J.
Erschienen in:Biology of sport
Veröffentlicht:8 (1991), 3, S. 151-159, Lit.
Format: Literatur (SPOLIT)
Publikationstyp: Zeitschriftenartikel
Medienart: Gedruckte Ressource
Sprache:Englisch
ISSN:0860-021X, 2083-1862
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Erfassungsnummer:PU199203052754
Quelle:BISp

Abstract

The take-off is the key phase in performing ski-jumping. Great attention is focused on this phase of the ski-jump both in the development of take-off abilities and in the correlation of the technique of ski-jumping. The study concentrated on the relation between two factors of the take-off (vigour and accuracy) and the length of jump. The factors were measured dynamometrically at the events GP Frenstat p.R. The whole set of jumps (n=406) was subjected to linear and nonlinear correlation analysis, and nonlinear regression analysis of three variables. The results showed a relatively low correlation between individual variables and the length of jump. Multiple correlations showed no substantial increases upon adding variables. In the linear model, the contribution of the two take-off factors was about 21 of the variance of the length of jump. Among the nonlinear models, the most suitable one was exponentional regression between the theoretically computed and measured values of the length of jump (r=0.70). This may lead to finding optimum combination of two factors of the take-off which may improve the performance of high level ski-jumping. Verf.-Referat