Markerless video-based estimation of 3D approach velocity in the javelin throw
(Markerlose videobasierte Schätzung der 3-D-Abwurfgeschwindigkeit im Speerwurf)
The purpose of this study was to explore the usefulness of a markerless open-source human pose estimation algorithm, for estimating centre of mass (CoM) velocity in the javelin throw at three discrete time instances: the last right leg touchdown (RLTD), brace leg touchdown (BLTD) and release. Forty throws from four right-handed javelin throwers were simultaneously captured with two high-speed video cameras and a 16-camera marker-based Vicon motion capture system. For horizontal resultant velocity (Vel_hor), the method demonstrated excellent validity at RLTD, whereas at BLTD and release errors were notable. Based on these findings, CoM Vel_hor can be estimated using the proposed method with promising accuracy at RLTD. At BLTD and release, using a CoM segment model with arms in more optimized measurement conditions might further improve the accuracy.
© Copyright 2022 ISBS Proceedings Archive (Michigan). Northern Michigan University. Veröffentlicht von International Society of Biomechanics in Sports. Alle Rechte vorbehalten.
Schlagworte: | Wurf Geschwindigkeit Speerwurf Biomechanik Messverfahren Bewegung Arm Video |
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Notationen: | Kraft-Schnellkraft-Sportarten |
Tagging: | markerless |
Veröffentlicht in: | ISBS Proceedings Archive (Michigan) |
Herausgeber: | M. Robinson, M. Lake, B. Baltzopoulos, J. Vanrenterghem |
Veröffentlicht: |
Liverpool
International Society of Biomechanics in Sports
2022
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Jahrgang: | 40 |
Heft: | 1 |
Seiten: | Article 85 |
Dokumentenarten: | Kongressband, Tagungsbericht Artikel |
Sprache: | Englisch |
Level: | hoch |