Background: One key issue in elite interactive team sports is the simultaneous execution of
motor actions (eg, dribbling a ball) and perceptual-cognitive tasks (eg, visually scanning the
environment for action choices). In volleyball, one typical situation is to prepare and execute
maximal block jumps after multiple-options decision-making and concurrent visual tracking
of the ongoing game dynamics to find an optimal blocking location. Based on resource-
related dual-and multi-tasking theories simultaneous execution of visual-cognitive and motor …