Does Physical Loading Affect The Speed and Accuracy of Tactical Decision-Making in Elite Junior Soccer Players?
Abstrakt
A soccer player's capability to control and manage his behav-iour in a game situation is a prerequisite, reflecting not only swift and accurate tactical decision-making, but also prompt implementation of a motor task during intermittent exercise conditions. The purpose of this study was to analyse the rela-tionship between varying exercise intensity and the visual-motor response time and the accuracy of motor response in an offen-sive game situation in soccer.
The participants (n = 42) were male, semi-professional, soccer players (M age 18.0 +- 0.9 years) and trained five times a week. Each player performed four dif-ferent modes of exercise intensity on the treadmill (motor inac-tivity, aerobic, intermittent and anaerobic activity).
After the end of each exercise, visual-motor response time and accuracy of motor response were assessed. Players' motion was captured by digital video camera.
ANOVA indicated no significant differ-ence (p = 0.090) in the accuracy of motor response between the four exercise intensity modes. Practical significance (Z-test = 0.31) was found in visual-motor response time between exercise with dominant involvement of aerobic metabolism, and intense intermittent exercise.
A medium size effect (Z-test = 0.34) was also found in visual-motor response time between exercise with dominant involvement of aerobic metabolism and exercise with dominant involvement of anaerobic metabolism, which was confirmed by ANOVA (897.02 +- 57.46 vs. 940.95 +- 71.14; p = 0.002). The results showed that different modes of exercise intensity do not adversely affect the accuracy of motor respons-es; however, high-intensity exercise has a negative effect on visual-motor response time in comparison to moderate intensity exercise.