Kinesiology, Vol. 17. No. 1., 1985.
Original scientific paper
An evaluation of reflection force in performance of "araber" and "bosakov"
Vladimir Medved
; Fakultet za fizičku kulturu Sveučilišta u Zagrebu
Ivan Wagner
; Fakultet za fizičku kulturu Sveučilišta u Zagrebu
Abstract
This is a preliminary study of importance of the manifest force of support reaction during jump-off in successful performance of "arber" and "bosakov". The sample consisted of 6 women gymnastics of national reputation, aged 13 to 21, 141 to 165 cm tall and weight from 34,4 to 56,3 kg with an experience in gymnastics from 4,5 to 9 years. The 3 component force of support reaction was measured and each attempt was separately judged. The study was carried out in July 1983.
For all 3 components, the values of maximum amplitudes and duration of individual characteristics time segments of force signals were extracted. The basic statistic operations were done on the extracted values; computation of average values, standard deviations and coefficients of variation. The analysis of obtained results and evaluation of achievement suggests:
- a successful performance of each element of technique is a result of good training in stereotype movements which is evident in repeatability of morphology of force signals;
- a powerful jump, reflected in great measured impulse of the vertical force Fx results, generally speaking, in successfully performed elements;
- the transversal component of the reflection force Fy is greater in "araber" than in "bosakov", while for F, stands just the opposite. This means that the rotation of the body around the longitudinal axis starts with the jump, or from the ground (in "arabtr");
-an individual realization of successful movement stereotypes is possible as in the case of gymnasts 1 and 5 who showed an aberration from the former two principles.
Keywords
Hrčak ID:
256236
URI
Publication date:
4.4.1985.
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