COMPARISON OF SOME KINEMATIC FLIGHT PARAMETERS OF SKIJUMPERS BETWEEN THE CLASSIC TECHNIOUE (19901 AND THE SOCALLED "V" TECHNIQUE (1993) AT THE WORLD-CUP COMPETITION AT PLANICIA (K120M)

Abstract

On a sample of the top 30 jumpers at the 1990 World Cup Finals in Planica some kinematic characteristics of the flight phase were found. For this purpose five kinematic variables were defined. The data on the kinematic parameters was obtained from pictures taken with a film camera. The jumps were filmed at the 1990 World Cup Finals in Planica; on the 120m jump hill. The observation point was placed 65m from the edge of the take-off. In 1992 a significant change of the flight technique in ski-jumping happened. A question of similarity of the kinematic flight parameters between the old and the new technique also came up, which needed checking. Therefore the same parameters were again obtained three years later, on the same jump hill, at same spot, and with the same technology (2D system). The purpose of this study was to find possible changes of the kinematic flight structure of the ski-jumpers, as a consequence of the changed flight technique. All the data was analyzed in accord with the set aim, using relevant statistical methods.