Effects of coaches' timeouts on basketball teams' offensive and defensive performances according to momentary differences in score and game period.

Gomez Ruano, Miguel Angel; Jimenez, Sergio; Navarro, Rafael; Lago-Penas, Carlos y Sampaio, Jaime (2011). Effects of coaches' timeouts on basketball teams' offensive and defensive performances according to momentary differences in score and game period.. "European Journal of Sport Science", v. 11 (n. 5); pp. 303-308. ISSN 1746-1391. https://doi.org/10.1080/17461391.2010.512366.

Descripción

Título: Effects of coaches' timeouts on basketball teams' offensive and defensive performances according to momentary differences in score and game period.
Autor/es:
  • Gomez Ruano, Miguel Angel
  • Jimenez, Sergio
  • Navarro, Rafael
  • Lago-Penas, Carlos
  • Sampaio, Jaime
Tipo de Documento: Artículo
Título de Revista/Publicación: European Journal of Sport Science
Fecha: 2011
Volumen: 11
Materias:
Palabras Clave Informales: Notational analysis, coaches, momentum, timeouts, bask
Escuela: Facultad de Ciencias de la Actividad Física y del Deporte (INEF) (UPM)
Departamento: Ciencias Sociales de la Actividad Física, del Deporte y del Ocio
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

The aim of the present study was to assess the effects of game timeouts on basketball teams? offensive and defensive performances according to momentary differences in score and game period. The sample consisted of 144 timeouts registered during 18 basketball games randomly selected from the 2007 European Basketball Championship (Spain). For each timeout, five ball possessions were registered before (n?493) and after the timeout (n?475). The offensive and defensive efficiencies were registered across the first 35 min and last 5 min of games. A k-means cluster analysis classified the timeouts according to momentary score status as follows: losing ( ?10 to ?3 points), balanced ( ?2 to 3 points), and winning (4 to 10 points). Repeated-measures analysis of variance identified statistically significant main effects between pre and post timeout offensive and defensive values. Chi-square analysis of game period identified a higher percentage of timeouts called during the last 5 min of a game compared with the first 35 min (64.999.1% vs. 35.1910.3%; x ?5.4, PB0.05). Results showed higher post timeout offensive and defensive performances. No other effect or interaction was found for defensive performances. Offensive performances were better in the last 5 min of games, with the least differences when in balanced situations and greater differences when in winning situations. Results also showed one interaction between timeouts and momentary differences in score, with increased values when in losing and balanced situations but decreased values when in winning situations. Overall, the results suggest that coaches should examine offensive and defensive performances according to game period and differences in score when considering whether to call a timeout.

Más información

ID de Registro: 35004
Identificador DC: http://oa.upm.es/35004/
Identificador OAI: oai:oa.upm.es:35004
Identificador DOI: 10.1080/17461391.2010.512366
URL Oficial: http://www.tandfonline.com/doi/abs/10.1080/17461391.2010.512366#.VVB0cPBchrY
Depositado por: Memoria Investigacion
Depositado el: 11 May 2015 09:57
Ultima Modificación: 11 May 2015 09:57
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