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Rafalovich A.B., Hasin L.A. Analysis of the spatio-temporal characteristics of the jerk of bar of weight-lifters of high qualification

DOI: 10.34835/issn.2308-1961.2020.7.p325-332
 
Analysis of the spatio-temporal characteristics of the jerk of bar of weight-lifters of high qualification
Aleksandr Borisovich Rafalovich, the candidate of pedagogical sciences, senior research associate, Leonid Aleksandrovich Hasin, the director, candidate of pedagogical sciences, senior lecturer; Scientific research Institute of Information Technologies of Moscow State Academy of Physical Culture, Malakhovka, Moscow region

Abstract
The analysis was made of the spatio-temporal characteristics of jerk of highly qualified weightlifters. To find the characteristics of the barbell movement, there were used high-speed video recording of the jerk. When analyzing the technique, the exercise microstructure proposed by the authors was used, which includes, among other things, phases lasting less than 0.04 s. Using correlation analysis revealed group dependencies between the studied indicators. Indicators are identified that differ significantly in successful and unsuccessful competitive attempts of the jerk. An example of the analysis of the individual technique of the jerk according to spatio-temporal indicators is presented.
Keywords: spatio-temporal characteristics, diagnostics of the technique of the jerk, highly qualified weightlifters, high-speed video recording.
 
References
  1. Hasin, L.A., Rafalovich, A.B. and Androsov, P.I. (2018),”The comparative analysis of time-space characteristics of snatch of a bar in successful and unsuccessful attempts of weight-lifters of high qualification”, Uchenye zapiski universiteta imeni P.F. Lesgafta, No 1 (155), pp. 386-391.
  2. Hasin, L.A. (2019), Analysis and correction of the technique of performing competitive exercises and planning of the training load in weightlifting using methods of artificial intelligence, mathematical modeling and high-speed video: Report on research, Malakhovka.
  3. Rafalovich, A.B. and Hasin, L.A. (2019), “Relationship of duration of phases and result in clean and jerk of a bar by weight-lifters of high qualification”, Biomechanics of physical actions and biomechanical control in sport: materials of the VIIth All-Russian scientific and practical conference with international participation, Moscow, pp. 177-183.
Contact information: NIIT1995@mail.ru, niit@mgafk.ru
Article arrived in edition 14.07.2020
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