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ORIGINAL RESEARCH article

Front. Bioeng. Biotechnol.
Sec. Biomechanics
Volume 12 - 2024 | doi: 10.3389/fbioe.2024.1449465
This article is part of the Research Topic Motion Tracking and Deformation Analysis in Biomechanics View all 6 articles

Rotation of the Hammer and Performance in Hammer Throwing

Provisionally accepted
Huang Jiaru Huang Jiaru 1Li Wei Li Wei 2*Leonardo Tartaruga Leonardo Tartaruga 3*Junlei Lin Junlei Lin 2Shi yu Shi yu 2*
  • 1 Beijing Sport University, Beijing, China
  • 2 School of Strength and Conditioning Training, Beijing Sport University, Beijing, China
  • 3 Department of Public Health, Experimental Medicine and Forensic Sciences, University of Pavia, Pavia, Lombardy, Italy

The final, formatted version of the article will be published soon.

    Objective: The purpose of this study was to determine the effects of hammer rotation on performance in hammer throwing.Methods: The hammer's velocity increment at different stages, the duration of rotations at different phases, and the horizontal azimuth angle and rotation radius at critical instants were calculated and compared between the long and short trials for 26 female athletes in actual competitions. Results: Compared to short trials, female throwers' long trials exhibited significantly larger release velocity (p < 0.001, ES = 1.42), greater velocity increment during the double support phase (p = 0.006, ES = 0.59), shorter duration during the single support phase (p ≤ 0.043, ES = 0.42-0.83), lower horizontal azimuth angle (p ≤ 0.027, ES = 0.46-0.57), and longer rotational radius at critical instants (p ≤ 0.021, ES = 0.48-0.73).Conclusion: During the process from the hammer head's low point to high point, athletes should focus on increasing the rotation radius of the hammer head and accelerating the right foot's landing speed during the single support phase. This approach aims to reduce the hammer's horizontal azimuth angle at the right foot touchdown, enhance the acceleration performance during the double support phase, and increase the release speed.

    Keywords: female, Velocity increment, Rotation radius, Horizontal azimuth angle, duration

    Received: 15 Jun 2024; Accepted: 12 Aug 2024.

    Copyright: © 2024 Jiaru, Wei, Tartaruga, Lin and yu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence:
    Li Wei, School of Strength and Conditioning Training, Beijing Sport University, Beijing, China
    Leonardo Tartaruga, Department of Public Health, Experimental Medicine and Forensic Sciences, University of Pavia, Pavia, 27100, Lombardy, Italy
    Shi yu, School of Strength and Conditioning Training, Beijing Sport University, Beijing, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.