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has been cited by the following article:

• 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.