Anticipation of Tennis Shot Direction from Whole-body Movement: The role of movement amplitude and dynamicsReportar como inadecuado

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* Corresponding author 1 Chelsea School 2 Université de la Méditerranée - Aix-Marseille 2

Abstract : While recent studies indicate that observers are able to use dynamic information to anticipate whole-body actions like tennis shots, it is less clear whether the action-s amplitude may also allow for anticipation. We therefore examined the role of movement dynamics and amplitude for the anticipation of tennis shot direction. In a previous study, movement dynamics and amplitude were separated from the kinematics of tennis players- forehand groundstrokes. In the present study, these were manipulated and tennis shots were simulated. Three conditions were created in which shot direction differences were either preserved or removed: Dynamics-Present-Amplitude-Present DA, Dynamics-Present-Amplitude-Absent DA, and Dynamics-Absent-Amplitude-Present DA. Nineteen low-skill and fifteen intermediate-skill tennis players watched the simulated shots and predicted shot direction from movements prior to ball-racket contact only. Percent of correctly predicted shots per condition was measured. On average, both groups- performance was superior when the dynamics were present the DA and DA conditions compared to when it was absent the DA condition. However, the intermediate-skill players performed above chance independent of amplitude differences in shots i.e., both the DA and DA conditions, whereas the low-skill group only performed above chance when amplitude differences were absent the DA condition. These results suggest that the movement-s dynamics but not their amplitude provides information from which tennis-shot direction can be anticipated. Furthermore, the successful extraction of dynamical information may be hampered by amplitude differences in a skill dependent manner.

Keywords : Motor Processes Visual Perception Sports Expert-novice biological motion perception PCA sport prediction advance-cue

Autor: N.J. Smeeton - R. Huys -



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