Applicant A.A. Atlas
Russian State University of Physical Education, Sport, Youth and Tourism (SCOLIPE), Moscow

Objective of the study was to determine the contribution of physical mechanisms of barbell snatch to the height of the height to which the barbell is lifted by means of a theoretical analysis.
Study results and conclusions. The analysis of special literature revealed that the essence of physical mechanism of barbell acceleration is the need to raise the exercise equipment along the S-shaped trajectory using the centripetal force acting on the barbell in the final acceleration and unsupported squat phases. For the purpose of effective implementation of this mechanism, the athlete must move the barbell toward his own body by 8-9 cm (5.1±1.5% of the body length) in the pre-acceleration and transition phases and by the beginning of the final acceleration phase raise the barbell to a height approximately corresponding to the pelvic area.

Keywords: system research methods, movement mechanism, biomechanics of weightlifting exercises.

References

1. Atlas A.A., Skotnikov V.F., Bayurin A.P. Tekhnika pod'ema shtangi v ryvke u muzhchin i zhenshchin s raznymi tipami traektoriy tsentra mass snaryada [technique of lifting bar in jerk for men and women with different types of apparatus center of mass trajectories]. Biomehanika dvigatelnykh deystviy i biomekhanicheskiy kontrol v sporte [Biomechanics of motor actions and biomechanical control in sports]. Proc. VII nat. res.- practical conference ", November 21-22, 2019. pp. 14-24.
2. Donskoy D.D. Sistemno-strukturny podhod i metodyi biomekhanicheskogo obosnovaniya sportivnoy tekhniki [System-structural approach and methods of biomechanical substantiation of sports equipment]. Lectures for students of physical education institutes. M.: SCOLIPE publ., 1981. 27 p.
3. Shalmanov A.A., Skotnikov V.F. Biomekhanicheskiy kontrol tekhnicheskoy i skorostno-silovoy podgotovlennosti sportsmenov v tyazheloy atletike [Biomechanical monitoring of technical and speed and power fitness of weightlifters]. Teoriya i praktika fiz. kultury. 2013. no. 2. pp. 103-106.
4. Shalmanov A.A., Skotnikov V.F., Panin A.V. Zakonomernosti izmeneniya kinematicheskih i dinamicheskih pokazateley dvizheniya shtangi v ryivke u tyazheloatletov vyisokoy kvalifikatsii v usloviyah sorevnovaniy [Patterns of change in kinematic and dynamic indicators of bar jerk motion for elite weightlifters in competition]. Olimp. 2013. no. 1-2. pp. 53-58.
5. Shalmanov A.A., Lukunina E.A.; Stolyarov V.I. [ed.]. Biomekhanicheskoe obosnovanie stroeniya sportivnykh dvigatelnykh deystviy (na primere klassicheskikh tyazheloatleticheskikh uprazhneniy) [Biomechanical substantiation of the structure of sports motor actions (case study of classical weightlifting exercises). Fundamentalnye i prikladnye issledovaniya fizicheskoy kultury, sporta, olimpizma: traditsii i innovatsii (GTsOLIFK, 1918-2017) [Fundamental and applied research of physical education, sports, Olympism: traditions and innovations (SCOLIPE, 1918-2017)]. Collected scientific and scientific-methodical articles. In 2 volumes. v. 1. M.: Sport publ., 2017. pp. 409-421.