The Effect of Sport Practice on Enhanced Cognitive Processing of Bodily Indices: A Study on Volleyball Players and Their Ability to Predict Hand Gestures.

To program proper reactions, athletes must anticipate opponents' actions on the basis of previous visuomotor experience. In particular, such abilities seem to rely on processing others' intentions to act. We adopted a new approach based on an attentional spatial compatibility paradigm to investigate how elite volleyball players elaborate both spatial and motor information at upper-limb posture presentation. Forty-two participants (18 volleyball players and 17 nonathlete controls assigned to Experiments 1 a and b, and eight basketball players assigned to Experiment 2) were tested to study their ability to process the intentions to act conveyed by hands and extract motor primitives (i.e., significant components of body movements). Analysis looked for a spatial compatibility effect between direction of the spike action (correspondence factor) and response side for both palm and back of the hand (view factor). We demonstrated that volleyball players encoded spatial sport-related indices from bodily information and showed preparatory motor activation according to the direction of the implied spike actions for the palm view (Experiment 1; hand simulating a cross-court spike, = 0.013, and a down-the-line spike, = 0.026) but both nonathlete controls (Experiment 1; both < 0.05) and other sports athletes (basketball players, Experiment 2; = 0.34, only cross-court spike) did not. Results confirm that elite players' supremacy lies in the predictive abilities of coding elementary motor primitives for their sport discipline.