The objective was to analyze the effect of mental fatigue induced by a prolonged period of a sport-based videogame on decision-making skill and visual search behaviour in basketball players. Sixteen male basketball players participated in the study. The experiment was a randomised counterbalanced crossover design. They underwent the two experimental conditions [Control (CON) and videogame (VID)], interspersed by a one-week washout interval. We measured decision-making skill and visual search behaviour before (baseline) and after cognitive manipulations (VID and CON) in the two experimental sessions. Accuracy decreased, and the decision-making response time increased only in the VID condition (p < 0.05). The number of fixations only changed for the VID condition (p < 0.05), while the duration of fixations remained similar in both experimental conditions (p > 0.05). The mental fatigue induced by sport-based videogame impaired decision-making and altered visual search behaviour in basketball players.
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