Kinematic Structure at the Early Flight Position in Ski Jumping

• Authors: Janez Vodičar , Milan Čoh , Bojan Jošt
• Languages of publication: EN

Abstracts

EN

The purpose of our research was to establish the variability of correlation between the length of the jumps andselected multi-item kinematic variables (n=9) in the early flight phase technique of ski jumping. This study wasconducted on a sample of elite Slovenian ski jumpers (N=29) who participated in the experiment on a jumping hill inHinterzarten, Germany (HS95m) on the 20th of August, 2008. The highest and most significant correlations (p=0.01)with the length of the ski jump were found in the multi-item variable height of flying, which was also expressed with thehighest level of stability of the explained total variance (TV) on the first factor (TV=69.13%). The most importantcharacteristic of the aerodynamic aspect of early flight was the variable angle between the body chord and the horizontalaxis with significantly high correlations (p<0.05). The stability of that aerodynamic factor was very high (TV=65.04%).The results were essentially similar for the multi-item variable angle between left leg and the horizontal axis(TV=61.88%). The rest of the multi-item kinematic variables did not have significant correlations with the multi-itemvariable length of jump. Only two more variables, the angle between the upper body and the horizontal plane(TV=53.69%), and the angle between left ski and left leg (TV=50.13%), had an explained common variance on the firstfactor greater than 50% of total variance. The results indicated that some kinematic parameters of ski jumping earlyflight technique were more important for success considering the length of the jump.

Keywords

EN

ski jumping; kinematic analysis; early flight phase

• Publisher: De Gruyter Open
• Journal: Journal of Human Kinetics
• Year: 2012
• Volume: 35
• Issue: 1
• Pages: 35-45

Dates

published

1 - 12 - 2012

online

26 - 01 - 2013

Contributors

author

Janez Vodičar

• University of Ljubljana, Faculty of Sport, Slovenia.

author

Milan Čoh

• University of Ljubljana, Faculty of Sport, Slovenia.

author

Bojan Jošt

• University of Ljubljana, Faculty of Sport, Slovenia.

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Identifiers

DOI

10.2478/v10078-012-0077-6