Information-governing dynamics of attacker-defender interactions in youth rugby union

PASSOS, P, ARAUJO, D, DAVIDS, Keith, GOUVEIA, L, MILHO, J and SERPA, S N (2008). Information-governing dynamics of attacker-defender interactions in youth rugby union. Journal of Sports Sciences, 26 (13), 1421-1429.

Full text not available from this repository.
Official URL:
Link to published version::


Previous work on dynamics of interpersonal interactions in 1 vs. 1 sub-phases of basketball has identified changes in interpersonal distance between an attacker and defender as a potential control parameter for influencing organizational states of attacker-defender dyads. Other studies have reported the constraining effect of relative velocity between an attacker and defender in 1 vs. 1 dyads. To evaluate the relationship between these candidate control parameters, we compared the impact of both interpersonal distance and relative velocity on the pattern-forming dynamics of attacker-defender dyads in the sport of rugby union. Results revealed that when interpersonal distance achieved a critical value of less than 4 m, and relative velocity values increased or were maintained above 1 m · s-1, a successful outcome (i.e. clean attempt) for an attacker was predicted. Alternatively, when values of relative velocity suddenly decreased below this threshold, at the same critical value of interpersonal distance, a successful outcome for the defender was predicted. Data demonstrated how the coupling of these two potential, nested control parameters moved the dyadic system to phase transitions, characterized as a try or a tackle. Observations suggested that relative velocity increased its influence on the organization of attacker-defender dyads in rugby union over time as spatial proximity to the try line increased.

Item Type: Article
Research Institute, Centre or Group - Does NOT include content added after October 2018: Centre for Sports Engineering Research
Identification Number:
Page Range: 1421-1429
Depositing User: Carole Harris
Date Deposited: 18 Mar 2011 15:50
Last Modified: 18 Mar 2021 21:00

Actions (login required)

View Item View Item


Downloads per month over past year

View more statistics