Sistema para la mejora del entrenamiento del lanzamiento de disco

  1. Moreno Salinas, David 1
  2. Sánchez Moreno, José 1
  3. Álvarez, Juan Carlos 2
  4. Revuelta, Carlos 3
  1. 1 Universidad Nacional de Educación a Distancia
    info

    Universidad Nacional de Educación a Distancia

    Madrid, España

    ROR https://ror.org/02msb5n36

  2. 2 Real Federación Española de Atletismo
  3. 3 Faculty of Sport Sciences, Universidad Europea de Madrid
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Journal:
Jornadas de Automática
  1. Cruz Martín, Ana María (coord.)
  2. Arévalo Espejo, V. (coord.)
  3. Fernández Lozano, Juan Jesús (coord.)

ISSN: 3045-4093

Year of publication: 2024

Issue: 45

Type: Article

DOI: 10.17979/JA-CEA.2024.45.10615 DIALNET GOOGLE SCHOLAR lock_openOpen access editor

Abstract

This paper presents the state of development of a low-cost system aimed at coaches and high-performance athletes for the improvement of the discus throw technique. The system is based on the analysis of the information provided by inertial measurement units (IMUs) and a video camera. Initially, the IMUs are located at five points on the thrower’s body and inside of the discus. The purpose of the IMUs is to provide data on linear accelerations and orientation angles to allow the direct and indirect derivation of certain biomechanical parameters of the athlete during the throwing (e.g., offset angles between hips, shoulders and discus, angular velocities of the disc, shoulders and hips, velocity and angles of the discus when leaving the hand, spinning angle applied to the discus, etc.) In that way, it lets automatically to identify the time phases involved in each throwand so determine the quality of it with the final objective of maximizing the flight distance of the discus. Regarding the video, it is based on the use of a single camera to obtain a 3D wireframe model of the athlete. For such a purpose, the video is processed using deep learning techniques that obtain the temporal sequence of 3D coordinates of up to 23 points of the athlete's body. This data, together with information from the IMUs, allows for the improvement of the biomechanical modelling with parameters such as the location of the athlete's centre of mass and the evolution of the angular momentum of the discus and thrower.

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Data source: Dialnet