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Analyse biomécanique de la performance en rugby professionnel : optimisation du lancer en touche et prise en charge des commotions cérébrales.

Abstract : The biomechanical analysis of the sport movement is a part of a dual perspective of performance optimization and injury prevention. The researches that was carried out during this thesis apply to rugby and center around two axes: the optimization of the lineout throwing performance and the concussion management improvement.50% of tries scored at international level come from a lineout throwing possession. Despite the strategic importance of this play phase, few biomechanical studies are present in the scientific literature. First, we proposed a throwing performance evaluation system, that allows to simultaneously quantify throwing accuracy and throwing timing. Subsequently, we conducted a series of experiments to better understand the biomechanical factors involved in this play phase. The first characterized the influence of dynamic postural stability on throwing accuracy over long distances, while the second identified the 3D kinematic parameters associated with throwing performance in players of different skills levels.The concussion study represents a growing interest in the rugby world, in particular because of the increase of its incidence observed over the last two decades. In addition, tackle is identified as the main cause of concussion and some factors are likely to increase the risk. The work produced in this second part of the thesis consisted in on the one hand, in evaluating the NeuroTracker interest (perceptual-cognitive tool) in the detection and the return to play monitoring of concussed players. On the other hand, an impact simulation device has been developed in order to reproduce “unanticipated” tackles under safe and reproducible conditions. Then, the biomechanical response to this type of impact was analyzed in a professional rugby players group, highlighting the influence of morphological characteristics specific to position on the concussion risk.All experiments were realized in the Racing 92 training center to promote the results transfer to the medical and sport staff.
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Submitted on : Friday, July 22, 2022 - 4:05:17 PM
Last modification on : Friday, August 5, 2022 - 2:54:01 PM

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  • HAL Id : tel-03736631, version 1

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Antoine Kneblewski. Analyse biomécanique de la performance en rugby professionnel : optimisation du lancer en touche et prise en charge des commotions cérébrales.. Biomécanique [physics.med-ph]. HESAM Université, 2022. Français. ⟨NNT : 2022HESAE040⟩. ⟨tel-03736631⟩

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