Jorge Arede - Profile on Academia.edu (original) (raw)
Papers by Jorge Arede
Space occupation near the basket shapes collective behaviours in youth basketball
This study aimed to analyse how youth basketball players explored numerical overloads during shot... more This study aimed to analyse how youth basketball players explored numerical overloads during shot attempts by measuring their space occupation across specific court areas. Four process-tracing variables measured how the number of attackers (NA), number of defenders (ND), interpersonal distance between attacker and the closest defender (ID) and distance between attacker and the basket (DBkt) impacted on the performance outcome (converted shot; missed shot; ball possession lost). Ten competitive games involving 13 U14 teams were video recorded and players' displacements were digitised. The associations between performance outcomes and the process-tracing measures were assessed using standardised mean differences and a cross-correlation function. A multinomial logistic regression was used to calculate the odds ratio (OR) for each of the three possible outcomes. Results revealed that when shot attempts occurred at larger ID and at smaller DBkt, the possibilities to obtain a converted shot increased. The numerical overload of defenders near the scoring target was predominantly associated with offensive success. Also, the possibility of attackers to lead the spatial relation of movements with the defenders, near the scoring target, appeared as a prominent strategy to succeed. In sum, basketball teams that exhibit potential to adapt their collective behaviours to local changes in the environment might be closer to achieving successful outcomes.
Este estudio tuvo como objetivo analizar la distribución espacial de los jugadores de acuerdo con... more Este estudio tuvo como objetivo analizar la distribución espacial de los jugadores de acuerdo con la eficacia de las acciones de juego de baloncesto. Tres partidos oficiales de baloncesto, campeonato portugués U14, fueron filmados y después analizados con el fin de seleccionar 10 secuencias de juego que terminaron en éxito ofensivo o defensivo. Las trayectorias de los jugadores en la cancha fueron digitalizadas con el fin de acceder a sus coordenadas reales con software TACTO. Este procedimiento ha permitido calcular el número de atacantes, defensores y ratio atacantes/defensores en cada uno de las siete áreas de la cancha (A1, A2, A3, A4, A5, A6, A7), sobre una base de momento a momento en toda la secuencia de juego. La distribución espacial de los jugadores ha ocurrido en función de la posición relativa a la canasta. En particular, la superioridad numérica defensiva en las zonas más cercanas a la canasta (A3) se relacionó con una mayor eficacia ofensiva. Estos resultados sugieren que la interacción entre constreñimientos, probablemente relacionados con la proximidad a la canasta, la ineficacia de las habilidades defensivas y la eficacia de la movilidad atacante pueden haber desencadenado patrones colectivos distintivos de distribución espacial. Palabras clave: Toma de decisiones, Análisis del comportamiento, Creatividad Abstract: this study aimed to analyse players' spatial distribution according to their performance outcomes in basketball. Three competitive games of U14 portuguese basketball teams were filmed and then analysed in order to select 10 sequences of play ending in successful offense or successful defence. Movement displacement trajectories of performers were digitized in order to access their real world coordinates using TACTO software. This procedure allowed computing the number of attackers, defenders and ratio attackers/defenders on each of seven court locations (A1, A2, A3, A4, A5, A6 and A7) throughout the sequence of play, on a moment-to-moment basis. We found that player's spatial distribution proceeds in function of the relative position to the basket. Particularly, defensive numerical superiority in closer areas to the basket (A3) was related with higher offensive efficacy. These results suggest that interacting constraints, probably related with the proximity to the basket, inefficacy of defensive skills and superior attacker mobility might have shaped distinctive collective patterns of spatial distribution.
In the current context the coaches have to be knowledgeable, competent and qualified to meet the... more In the current context the coaches have to be knowledgeable, competent and
qualified to meet the demands’ athletes (International Council for Excellence
& Coaching Association of Summer Olympic International Federations,
2012) and the study of coaches’ excellence can provide us a guide to improve
coaches’ performance (Schempp, Webster, McCullick, Busch, & Mason,
2007). This study aimed to assess which features are presented by the expert
coaches. Between March and April 2014, occurred a search in B-on database
and ResearchGate scientific network, which resulted in 11 registers and were
added more two articles provided directly by the authors, all published in the
last five years in Portuguese and English languages. The documents’ analysis
showed the absence of a unanimous expert coach’ profile, although the
features found may be framed in different components of the coaching
effectiveness (Côté & Gilbert, 2009). However, we highlight characteristics
such as knowledge, search for continuous improvement, dedication, passion,
adaptability and effective communication that reinforce pursuit for
systematic performance improvement and continuous learning throughout
life as essential prerequisites for the development of excellence.
O objetivo deste estudo foi verificar a existência de relação entre variáveis cinemát... more O objetivo deste estudo foi verificar a existência de relação entre variáveis cinemáticas da
fase de contacto da corrida e também com variáveis fisiológicas ligadas à economia de
corrida, em alunos universitários.
Dois alunos realizaram 10 séries de 400 metros, com registo vídeo do exercício e
monitorização da frequência cardíaca, responderam ainda a uma escala de perceção subjetiva
de esforço (Foster, 1998).
Os dados foram analisados através dos softwares Kinovea 0.8.15 e IBM SPSS Statistics 19,
com um Alpha de Cronbach superior a .726. O ângulo do joelho no toe-off apresentou-se
como um indicador da técnica e economia de corrida, em exercícios com intensidade
submáxima, que justifica o treino da força dos membros inferiores e a sua monitorização com
recurso a tecnologias da informação e comunicação.
This study aimed to assess how literature described the barriers and constraints that prevent/ c... more This study aimed to assess how literature described the barriers and constraints that prevent/
constrain the participation in leisure -time physical activity for disabled people. For this review, B -on,
Scielo and Google Scholar databases were used to search bibliographic sources, resulting in different
types of articles with relief (n = 5), supplemented by other sources presented in articles’ bibliography
(n= 6). The sources, were later grouped and presented in various types of disabilities, physical disability, mental disability and hearing impairment.
Documents analysis showed that disabled people were constrained by: i) structural barriers, at
transcontinental level and independently of its type of disability; ii) economic reasons, especially the
subjects with physical disabilities; iii) social issues, in particular the attitude that society has towards
people with disabilities, that constrains its practice of leisure -time physical activity. A systematic review
showed that the emerging paradigm of an inclusive recreational sport and leisure-time physical activity presents weaknesses because disabled people were faced with a diverse set of barriers/constraints
(intrapersonal, interpersonal and structural) in order to access to leisure -time physical activity, which
should be removed together with the promotion of stimuli, increasing the opportunities for practice
and consequently the levels of leisure-time physical activity.
Space occupation near the basket shapes collective behaviours in youth basketball
This study aimed to analyse how youth basketball players explored numerical overloads during shot... more This study aimed to analyse how youth basketball players explored numerical overloads during shot attempts by measuring their space occupation across specific court areas. Four process-tracing variables measured how the number of attackers (NA), number of defenders (ND), interpersonal distance between attacker and the closest defender (ID) and distance between attacker and the basket (DBkt) impacted on the performance outcome (converted shot; missed shot; ball possession lost). Ten competitive games involving 13 U14 teams were video recorded and players' displacements were digitised. The associations between performance outcomes and the process-tracing measures were assessed using standardised mean differences and a cross-correlation function. A multinomial logistic regression was used to calculate the odds ratio (OR) for each of the three possible outcomes. Results revealed that when shot attempts occurred at larger ID and at smaller DBkt, the possibilities to obtain a converted shot increased. The numerical overload of defenders near the scoring target was predominantly associated with offensive success. Also, the possibility of attackers to lead the spatial relation of movements with the defenders, near the scoring target, appeared as a prominent strategy to succeed. In sum, basketball teams that exhibit potential to adapt their collective behaviours to local changes in the environment might be closer to achieving successful outcomes.
Este estudio tuvo como objetivo analizar la distribución espacial de los jugadores de acuerdo con... more Este estudio tuvo como objetivo analizar la distribución espacial de los jugadores de acuerdo con la eficacia de las acciones de juego de baloncesto. Tres partidos oficiales de baloncesto, campeonato portugués U14, fueron filmados y después analizados con el fin de seleccionar 10 secuencias de juego que terminaron en éxito ofensivo o defensivo. Las trayectorias de los jugadores en la cancha fueron digitalizadas con el fin de acceder a sus coordenadas reales con software TACTO. Este procedimiento ha permitido calcular el número de atacantes, defensores y ratio atacantes/defensores en cada uno de las siete áreas de la cancha (A1, A2, A3, A4, A5, A6, A7), sobre una base de momento a momento en toda la secuencia de juego. La distribución espacial de los jugadores ha ocurrido en función de la posición relativa a la canasta. En particular, la superioridad numérica defensiva en las zonas más cercanas a la canasta (A3) se relacionó con una mayor eficacia ofensiva. Estos resultados sugieren que la interacción entre constreñimientos, probablemente relacionados con la proximidad a la canasta, la ineficacia de las habilidades defensivas y la eficacia de la movilidad atacante pueden haber desencadenado patrones colectivos distintivos de distribución espacial. Palabras clave: Toma de decisiones, Análisis del comportamiento, Creatividad Abstract: this study aimed to analyse players' spatial distribution according to their performance outcomes in basketball. Three competitive games of U14 portuguese basketball teams were filmed and then analysed in order to select 10 sequences of play ending in successful offense or successful defence. Movement displacement trajectories of performers were digitized in order to access their real world coordinates using TACTO software. This procedure allowed computing the number of attackers, defenders and ratio attackers/defenders on each of seven court locations (A1, A2, A3, A4, A5, A6 and A7) throughout the sequence of play, on a moment-to-moment basis. We found that player's spatial distribution proceeds in function of the relative position to the basket. Particularly, defensive numerical superiority in closer areas to the basket (A3) was related with higher offensive efficacy. These results suggest that interacting constraints, probably related with the proximity to the basket, inefficacy of defensive skills and superior attacker mobility might have shaped distinctive collective patterns of spatial distribution.
In the current context the coaches have to be knowledgeable, competent and qualified to meet the... more In the current context the coaches have to be knowledgeable, competent and
qualified to meet the demands’ athletes (International Council for Excellence
& Coaching Association of Summer Olympic International Federations,
2012) and the study of coaches’ excellence can provide us a guide to improve
coaches’ performance (Schempp, Webster, McCullick, Busch, & Mason,
2007). This study aimed to assess which features are presented by the expert
coaches. Between March and April 2014, occurred a search in B-on database
and ResearchGate scientific network, which resulted in 11 registers and were
added more two articles provided directly by the authors, all published in the
last five years in Portuguese and English languages. The documents’ analysis
showed the absence of a unanimous expert coach’ profile, although the
features found may be framed in different components of the coaching
effectiveness (Côté & Gilbert, 2009). However, we highlight characteristics
such as knowledge, search for continuous improvement, dedication, passion,
adaptability and effective communication that reinforce pursuit for
systematic performance improvement and continuous learning throughout
life as essential prerequisites for the development of excellence.
O objetivo deste estudo foi verificar a existência de relação entre variáveis cinemát... more O objetivo deste estudo foi verificar a existência de relação entre variáveis cinemáticas da
fase de contacto da corrida e também com variáveis fisiológicas ligadas à economia de
corrida, em alunos universitários.
Dois alunos realizaram 10 séries de 400 metros, com registo vídeo do exercício e
monitorização da frequência cardíaca, responderam ainda a uma escala de perceção subjetiva
de esforço (Foster, 1998).
Os dados foram analisados através dos softwares Kinovea 0.8.15 e IBM SPSS Statistics 19,
com um Alpha de Cronbach superior a .726. O ângulo do joelho no toe-off apresentou-se
como um indicador da técnica e economia de corrida, em exercícios com intensidade
submáxima, que justifica o treino da força dos membros inferiores e a sua monitorização com
recurso a tecnologias da informação e comunicação.
This study aimed to assess how literature described the barriers and constraints that prevent/ c... more This study aimed to assess how literature described the barriers and constraints that prevent/
constrain the participation in leisure -time physical activity for disabled people. For this review, B -on,
Scielo and Google Scholar databases were used to search bibliographic sources, resulting in different
types of articles with relief (n = 5), supplemented by other sources presented in articles’ bibliography
(n= 6). The sources, were later grouped and presented in various types of disabilities, physical disability, mental disability and hearing impairment.
Documents analysis showed that disabled people were constrained by: i) structural barriers, at
transcontinental level and independently of its type of disability; ii) economic reasons, especially the
subjects with physical disabilities; iii) social issues, in particular the attitude that society has towards
people with disabilities, that constrains its practice of leisure -time physical activity. A systematic review
showed that the emerging paradigm of an inclusive recreational sport and leisure-time physical activity presents weaknesses because disabled people were faced with a diverse set of barriers/constraints
(intrapersonal, interpersonal and structural) in order to access to leisure -time physical activity, which
should be removed together with the promotion of stimuli, increasing the opportunities for practice
and consequently the levels of leisure-time physical activity.