Technical execution tests and analyses in youth ski jumping competitions

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G.G. Zakharov1
A.V. Voronov2
1Saint-Petersburg scientific-research institute for physical culture, Saint-Petersburg
2Federal Science Center for Physical Culture and Sport, Moscow

Objective of the study was to test and analyze the 15-17 year-olds’ technical skills in practical ski jumping competitions.
Methods and structure of the study. We sampled the 15-17 year-old ski jumping competitors (n=45) at the 2020 Student Sports Games in Tchaikovsky. The technical skills were captured by Sony HDR-CX650E camcorders fixed horizontally on tripods about 20m from and perpendicular to the jump line and rated at 50 frames per second. The camcorders were placed at the take-off and 6m/ 35m far downhill. The postural control and skiing symmetries was rated in the (1) in-run, (2) take-off and (3) flight phases from behind.
Results and Conclusion. The three phase (in-run, take-off and flight) kinematics was analyzed to rate the individual technical executions on the 102m long K-95 ramp in competitions. We also recommend the junior ski jumping training service quality being improved by regular camcorder tests with the postural control analyses and simulations to develop clear and symmetrical technical execution. Such tests and analyses are indispensable for the individual technical progress control with reference to the modern execution standards.

Keywords: ski jumping, junior ski jumpers, biomechanics, angle characteristics, aerodynamics.

References

  1. Zakharov G.G., Zlydnev A.A., Sergeev G.A. Biomekhanicheskiy analiz «beskontaktnoy fazy ottalkivaniya» i nachala poleta v sovremennoy tekhnike pryzhkov na lyzhakh s tramplina [Biomechanical analysis of “contactless phase of repulsion” and the start of flight in modern ski jumping technique]. Uchenye zapiski universiteta im. P.F. Lesgafta. 2016. No. 8 (138). pp. 61-66.
  2. Zakharov G.G. Otsenka tekhnicheskoy podgotovlennosti v pryzhkakh na lyzhakh s tramplina u lyzhnikov-dvoebortsev 15-17 let [Rating technical fitness in ski jumping in 15-17 year-old combined skiers]. Innovatsionnye tekhnologii v sisteme sportivnoy podgotovki, massovoy fizicheskoy kultury i sporta [Innovative technologies in sports training, mass physical education and sport system]. Proceedings national research-practical conference with international participation. Saint-Petersburg, 2019. pp. 59-64.
  3. Sergeev G.A., Zlydnev A.A., Yakovleva A.A. Metodika razrabotki kompleksnykh tselevykh programm podgotovki regionalnykh sbornykh komand kvalifitsirovannykh sportsmenov na chetyrekhletniy tsikl podgotovki (na primere lyzhnikov-dvoebortsev RF) [Methodology for development of integrated target programs for training of regional combined teams of qualified athletes for four-year training cycle (case study of combined skiers of the Russian Federation)]. Study guide. Saint-Petersburg: Lesgaft National State University of Physical Education, Sport and Health publ., 2013. 132 p.
  4. Buchner S. Technikleitfaden Skispringen. DSV Trainerschule. Planegg. 2015. 44 р.
  5. Gneckow J. Entwicklungeines Anleitungsmaterialszur Vervollkommnung der Skisprungtechnikim Nachwuchstraining. DSV Trainerschule, Planegg. 2012. pp. 51-63.
  6. Müller S., Kreibich S., Wiese G. Analyse der nationalen und internationalen Leistungsentwicklungim Skispringen. [Olympiaanalyse]. Available at: https://www.iat.uni-leipzig.de/datenbanken/iks/dsv-ssnk/ (date of request 28.02.2021).