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Conferências
cient data prevented comprehensive analysis of individual
teams. The aims of this study are twofold; firstly, to confirm
that previously researched perturbations could be reliably identified
and classified in association football and use these to create
a normative profile for an individual team whereby the
means stabilise, allowing the portrayal of characteristic ways of
creating scoring opportunities. And secondly, to explore the
concept of momentum and combine these ideas and applied
analyses with those of perturbations to achieve a simpler and
more practical use of dynamic systems.
Fifteen games involving Arsenal Football Club were analysed
from the British League seasons 2002/2003 and 2003/2004,
post-event from video. It was found that the 12 perturbations
previously identified Hughes et al. (1997) were consistently
identified and classified. Arsenals characteristic patterns of play
were identified, highlighting important coaching information in
attack and defence. From the eleven matches used to compile a
normative profile, a total of 212 shots were analysed with goals
scored, on average from every 5 Arsenal shots. Lost control
was the most efficient attacking perturbation (42.9% shots
resulted in goals) and foul the least (10%). In defence Arsenal
conceded, on average from every 7.5 shots but appeared to
show vulnerability to attacking runs, with 75% of those perturbations
resulting in goals.
Although total shot frequency stabilised satisfactorily after 8
matches, the significant (p