TITLE:
The Influence of a Goalkeeper as an Outfield Player on Defensive Subsystems in Futsal
AUTHORS:
Umberto C. Corrêa, Keith Davids, Silvia L. Silva, Renata A. Denardi, Go Tani
KEYWORDS:
Ecological Dynamic, Interpersonal Coordination, Team Sport, Decision-Making, Futsal
JOURNAL NAME:
Advances in Physical Education,
Vol.4 No.2,
May
15,
2014
ABSTRACT:
The aim of this
study was to investigate the influence of the goalkeeper as an outfield player
on defensive subsystems in the team sport of futsal. For this purpose, all
sequences of play involving the goalkeeper (n = 65), and the sequences without
a goalkeeper (controls) (n = 11), were selected from digital video footage of a
futsal competition, and analysed using TACTO software. The defensive area,
attacker-defender distance, and interception distance were used to examine
players’ coordination tendencies as a team in completion of successful and
unsuccessful passes and shots. Results showed that each team reduced its
defensive area as well as its variability in situations where the goalkeeper
acted as an outfield player. This finding implies that it was an effective defensive
strategy because it led to emergence of more unsuccessful passes. It was also
observed that the goalkeeper acting as an outfield player was an effective
strategy for attacking in terms of increasing shots at goal.