PDF(Pubmed)
Abstract：
This study aimed to verify whether peripheral perception, tactical behaviour, and physical performance are influenced by acute physical fatigue in soccer players. The study included 24 trained soccer players (18.6 ± 1.5 years) from two Brazilian clubs. The TSAFT90 test was used to induce acute physical fatigue. The results showed that physical fatigue did not affect peripheral perception (p = 0.360). Regarding tactical behaviour, improved efficiency was observed for the principles of offensive coverage (p = 0.029), width and length with the ball (p = 0.044), and concentration (p = 0.008). On the other hand, a reduction was observed in the number of tactical actions of offensive coverage (p = 0.020) and recovery balance (p = 0.042). Also, improved accuracy in the principles of defensive balance (p = 0.009), recovery balance (p = 0.021) and defensive unity (p = 0.003) occurred under physical fatigue. A reduction in the physical performance outcomes total distance covered (p < 0.001), average speed (p < 0.001), sprints (p = 0.029), number of accelerations (p = 0.008) and decelerations (p = 0.008) were also detected. The internal (p < 0.01) and external (p < 0.01) workload was higher under physical fatigue. Overall, acute physical fatigue did not influence peripheral perception. However, physical performance was reduced under fatigue, the perceived effort increased, and tactical behaviours were affected by decreasing tactical actions performed near the ball, increasing errors in defensive movements in the lateral corridors and the last defensive line, and improving offensive tactical actions performance.
摘要：
本研究旨在验证外周感知是否，战术行为,足球运动员的急性身体疲劳会影响身体表现。该研究包括来自两个巴西俱乐部的24名训练有素的足球运动员（18.6±1.5岁）。TSAFT90试验用于诱导急性身体疲劳。结果表明，身体疲劳不影响外周知觉（p=0.360）。关于战术行为，在进攻覆盖原则下观察到效率提高(p=0.029)，球的宽度和长度（p=0.044），和浓度（p=0.008）。另一方面,在进攻覆盖(p=0.020)和恢复平衡(p=0.042)的战术行动数量上观察到减少.此外，提高了防御平衡原则的准确性(p=0.009)，恢复平衡（p=0.021）和防御统一（p=0.003）发生在身体疲劳下。身体表现结果总覆盖距离的减少(p<0.001)，平均速度(p<0.001)，冲刺(p=0.029)，还检测到加速度(p=0.008)和减速度(p=0.008)的数量.在体力疲劳下，内部（p<0.01）和外部（p<0.01）工作量较高。总的来说,急性身体疲劳不影响外周知觉。然而,在疲劳的情况下，物理性能降低，感知到的努力增加了，战术行为受到靠近球的战术行动减少的影响，横向走廊和最后防线的防御运动错误增加，提高进攻战术动作表现。
