The ecological dynamics of 1v1 sub-phases in association football
By Ricardo Duarte, Duarte Araújo, Vítor Gazimba, O. Fernandes, H. Folgado, J. Marmeleira, Keith Davids. 2010
50 citations recorded by the source corpus.
This paper analyzes effects of different practice task constraints on heart rate (HR) variability during 4v4 smallsided football games. Participants were sixteen football players divided into two age groups (U13, Mean age: 12.4±0.5 yrs; U15: 14.6±0.5). The task consisted of a 4v4 sub-phase without goalkeepers, on a 25x15 m field, of 15 minutes duration with an active recovery period of 6 minutes between each condition. We recorded players’ heart rates using heart rate monitors (Polar Team System, Polar Electro, Kempele, Finland) as scoring mode was manipulated (line goal: scoring by dribbling past an extended line; double goal: scoring in either of two lateral goals; and central goal: scoring only in one goal). Subsequently, %HR reserve was calculated with the Karvonen formula. We performed a time-series analysis of HR for each individual in each condition. Mean data for intra-participant variability showed that autocorrelation function was associated with more short-range dependence processes in the “line goal” condition, compared to other conditions, demonstrating that the “line goal” constraint induced more randomness in HR response. Relative to inter-individual variability, line goal constraints demonstrated lower %CV and %RMSD (U13: 9% and 19%; U15: 10% and 19%) compared with double goal (U13: 12% and 21%; U15: 12% and 21%) and central goal (U13: 14% and 24%; U15: 13% and 24%) task constraints, respectively. Results suggested that line goal constraints imposed more randomness on cardiovascular stimulation of each individual and lower inter-individual variability than double goal and central goal constraints.
Subfields: Cognitive Neuroscience, Orthopedics and Sports Medicine, Social Psychology
View Paper: https://www.semanticscholar.org/paper/5b919863daf0656a9b3bfe73d3cf4aa26b212ef0
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Citations in the corpus
- Varying Numbers of Players in Small-Sided Soccer Games Modifies Action Opportunities during Training (2014, unknown): “Statistical analysis of RDipass revealed a significant main effect for relative number of players, F(2,261) = 8.”
- An Ecological Dynamics Approach to Skill Acquisition: Implications for Development of Talent in Sport (2013, background): “Additionally, the relative velocity of an attacker and a defender was shown to constrain the emergence of dribbling behaviours when values of interpersonal distance were 4 m or less (Passos et al., 2008; Duarte et al., 2010).”