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Judging the 'Passability' of Dynamic Gaps in a Virtual Rugby Environment

Nicolas Vignais 1 Benoit Bideau 1 Cathy Craig 2 Sébastien Brault 1 Franck Multon 1, 3 Paul Delamarche 1 Richard Kulpa 1, 3 
3 BUNRAKU - Perception, decision and action of real and virtual humans in virtual environments and impact on real environments
IRISA - Institut de Recherche en Informatique et Systèmes Aléatoires, ENS Cachan - École normale supérieure - Cachan, Inria Rennes – Bretagne Atlantique
Abstract : The authors investigated how different levels of detail (LODs) of a virtual throwing action can influence a handball goalkeeper's motor response. Goalkeepers attempted to stop a virtual ball emanating from five different graphical LODs of the same virtual throwing action. The five levels of detail were: a textured reference level (L0), a non-textured level (L1), a wire-frame level (L2), a point-light-display (PLD) representation (L3) and a PLD level with reduced ball size (L4). For each motor response made by the goalkeeper we measured and analyzed the time to respond (TTR), the percentage of successful motor responses, the distance between the ball and the closest limb (when the stopping motion was incorrect) and the kinematics of the motion. Results showed that TTR, percentage of successful motor responses and distance with the closest limb were not significantly different for any of the five different graphical LODs. However the kinematics of the motion revealed that the trajectory of the stopping limb was significantly different when comparing the L1 and L3 levels, and when comparing the L1 and L4 levels. These differences in the control of the goalkeeper's actions suggests that the different level of information available in the PLD representations (L3 and L4) are causing the goalkeeper to adopt different motor strategies to control the approach of their limb to stop the ball.
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Submitted on : Tuesday, November 16, 2010 - 3:45:25 PM
Last modification on : Tuesday, October 25, 2022 - 4:17:58 PM


  • HAL Id : inria-00536625, version 1


Nicolas Vignais, Benoit Bideau, Cathy Craig, Sébastien Brault, Franck Multon, et al.. Judging the 'Passability' of Dynamic Gaps in a Virtual Rugby Environment. Journal of Sports Science and Medicine, 2010. ⟨inria-00536625⟩



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