Table 1 The collected variables inclusive their respective categories and definitions
From: The use of vanishing spray reduces the extent of rule violations in soccer
Variable | Categories and definition |
|---|---|
Use of vanishing spray | True or false |
Local category | Left/right near: On the sides of the penalty box |
Left/right far: On the sides of the virtually extended penalty box between 16.5 and 35 m distance of the goal line | |
Central near left/right: Inside the virtually extended penalty box with not more than 26.5 m distance of the goal line (penalty box plus 10 m). Left and right are divided by a virtual line in the middle of the field drawn at right angle to the goal line | |
Central far: Otherwise, but within 35 m distance to the goal line | |
Players in wall | Numbers of defensive players in the wall |
Violation of the minimum distance | True: At least one player passes the referees mark with his entire foot |
False: otherwise | |
Massive violation of the min distance | True: More than one player commits a violation or a player reduces the distance by more than 1 m |
False: otherwise | |
Punishment for violations | Yellow card: A yellow card is awarded |
Verbal cautions: The referee corrects the players verbally | |
None: No punishment | |
Free kick retaken | True or false |
Success of shots | OnTarget: A goal is scored, the ball hits the goals border or the goalkeeper makes a save |
Missed: Ball misses the goal or is blocked by a player outside the wall | |
Wall: Ball is blocked by the wall | |
Success of crosses | Successful: A player of the offensive team is able to perform a shot or pass with the first touch after the cross |
Not successful: Otherwise |