Mit insgesamt 44 Probanden aus 8 Nationen, darunter mehrere Welt- und Europameister, wurde mittels Vicon motion Capturing eine kinematische Analyse des „Doppel- Seitwärtsfußstoßes“ durchgeführt.
Einige der Ergebnisse wurden bereits im Journal of Sport Sciences (http://www.tandfonline.com/doi/full/10.1080/02640414.2016.1164333 ) publiziert und am ECSS Kongress 2014 (Größter Sportwissenschaftlicher Kongress Europas; http://www.ecss-congress.eu/2014/14/) präsentiert.
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Publikation im Journal of Sport Sciences bzw. beim Taylor&Francis Onlineverlag:
Hölbling, D., Preuschl, E., Hassmann, M., Baca, A.
University of Vienna, Austria
The double side kick is a frequently used technique in pointfighting on which most offensive kicking techniques are based on. The aim of the study was to identify parameters, e.g., trunk and leg positions, durations and velocities that affect successful technique execution.
44 fighters, male and female, including European and World champions, participated in the research. The participants performed double side kicks to a punching bag with the target at chest level. 10 international experts scored (1–10 points; interrater correlation ICC (3,1): 0.952) videos of the best individual trial for quality of technique execution. Based on the average of the scores participants were categorised into 2 equally sized groups. For kinematic data acquisition, a Vicon 3D-motion capturing system was used. The normalised knee height of the kick leg (KHK), normalised absolute distance to the frontal shoulder (DKS) at the end of both chambering phases, the horizontal velocity during both chambering phases (KEV), the durations of all 6 functional phases and total duration, were analysed.
KHK1, KHK2, DKS1 and DKS2, total duration as well as 4 out of 6 phase durations and KEV1 showed significant differences between groups in two-sided t-test or Mann–Whitney U-test for not normally distributed variables.
Vortrag beim ECSS- Kongress in Amsterdam:
A kinematic analysis of the double-side kick in point-fighting (kickboxing)
Hölbling, D., Preuschl, E., Baca, A.
University of Vienna, Austria
INTRODUCTION Point-fighting is a kickboxing discipline, which is characterized by a scoring-system, in which only the first regular strike scores. After a short break, the fight is then continued from the starting positions. This affects the tactics and techniques generally used. The basic movements comprise offensive and defensive foot- and hand techniques to attack head and body of the opponent. The aim of the study was to analyse the offensive combat kicking technique 'double-sidekick' which seems to be the basic movement for all offensive kicking techniques in pointfighting. This technique comprises two kicks with distance reduction to the target whereby the second kick reaches. In high level fights, realizations of this technique have been observed, which differ from those predominately taught. Top class fighters seem to raise up their kicking knees very high and accomplish to straighten up their upper body simultaneously.
METHODS 44 fighters from 7 countries participated in the study. 8 won at least one world championship, 8 at least one European championship, 25 at least one national championship and 20 at least one high ranked international tournament; 15 participants were at advanced level without any noteworthy success at competitions. The athletes performed double-sidekicks to chest level with the aim to score, like in competitions. A Vicon 3D-motion capturing system comprising 8 cameras was used for kinematic data acquisition. The fastest one (of at least 3 kicks) was taken for further analysis. Knee height of the kicking leg (KHK) and distance between knee and shoulder (DKS) at two measuring points (MP1 and MP2) defined by the highest elevation of the knee before the first and the second kick were determined and normalized by anthropometric measurements. 10 experts with long-term experience in coaching of international top athletes scored the competition techniques (1-10) by assessing their chances of success based on videos of the individual executions (ICC: 0.952). By this the fighters got categorized in 5 groups. The Spearman test was used to analyse the correlation between normalized DKS, KHK at MP1 and MP2 and the experts’ categories.
RESULTS AND DISCUSSION Normalized KHK is larger and DHS smaller for better categorized athletes at MP1 and MP2 (KHK: r=0.677/0.402, DKS: r=-0.664/-0.487; p<0.01 for all tests).
The kicking technique of successful point-fighters is characterized by a high elevation of the kicking knee and a concurrent erected body position before and between the two kicks (at MP1 and MP2). Practical implications for physical training are to improve the strength of the hip flexor, the abductor and the lateral abdominal muscles and to stretch the adductor and ischiocoral muscles.
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