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A Biomechanical Study on Failed Snatch Based on the Human and Bar Combination Barycenter

Authors :
Gongju Liu
Houwei Zhu
Jing Ma
Huiju Pan
Xu Pan
Yingyue Zhang
Ting Hu
Gusztáv Fekete
Haiying Guo
Minjun Liang
Source :
Applied Bionics and Biomechanics, Vol 2022 (2022)
Publication Year :
2022
Publisher :
Hindawi Limited, 2022.

Abstract

Objective. The purpose of this research was to use a new method the human and bar combination barycenter to exposit the differences between successful and failed characteristics of snatch attempts in competition. Try to establish an effective biomechanical method that can uncover the main factors for the failed snatch. The obtained results will provide valuable information for weightlifters to improve the success rate in snatch by altering their technical issues accordingly. Methods. A 3-D video analysis method was used to compare the characteristics of the heaviest successful and failed attempts of ten elite weightlifters in the men’s 73 kg category. The video was captured under competitive conditions at the 2019 World Weightlifting Championships, the 2019 Asian Weightlifting Championships, and the 2020 China Olympic Trial. The video data were digitized using the SIMI°Motion7.50 3-D system (Germany). Results. Significant difference (P>0.05) was not found between the successful and failed attempts in the parameters, such as the maximal vertical rising velocity, the maximal vertical height, and the vertical displacement of the barbell. The maximal descending acceleration of the human body, the time duration, the angles of the hip, and knee joints were no significant difference. However, significant differences were found in the variation of the human and bar combination barycenter on the X-axis in the inertial ascent stage and the squat support stage (t=2.862,P

Details

Language :
English
ISSN :
17542103
Volume :
2022
Database :
Directory of Open Access Journals
Journal :
Applied Bionics and Biomechanics
Publication Type :
Academic Journal
Accession number :
edsdoj.59d34a51f49b4c019da47c3aa9e3eb8c
Document Type :
article
Full Text :
https://doi.org/10.1155/2022/9279638