

In addition, physical fatigue induced players to make quicker decisions regarding tactical actions near the ball and inside the centre of play. In summary, physical fatigue did not affect players' ability to detect information from the peripheral visual field and did not influence the quality of decision-making of soccer players. Results displayed that physical fatigue did not influence peripheral perception and decision-making quality, although it improved decision-making response time for the tactical principles of penetration, width and length with the ball, delay, defensive coverage, and recovery balance. Peripheral perception and decision-making abilities were compared between the control and physical fatigue "conditions". Physical fatigue was induced through T-SAFT 90 that simulated the metabolic and physical demands of a soccer game (e.g., acceleration, deacceleration, change direction, jump, and technical action). In laboratory conditions, the Vienna Test System and the TacticUP® video test was used to assess peripheral perception and decision making (response time and decision-making quality), respectively. The sample was composed of 48 soccer players from two youth academies of Brazilian clubs (17.03 ± 2.33 years old). This study aimed to verify whether the peripheral perception and decision making of young soccer players are influenced by physical fatigue.
