{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,23]],"date-time":"2026-01-23T10:03:22Z","timestamp":1769162602900,"version":"3.49.0"},"reference-count":20,"publisher":"SAGE Publications","issue":"2","license":[{"start":{"date-parts":[[2015,5,4]],"date-time":"2015-05-04T00:00:00Z","timestamp":1430697600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology"],"published-print":{"date-parts":[[2016,6]]},"abstract":"<jats:p> This study proposes a computational method to inspect the tactical position of players during the match and a new metric to analyse the defensive pressure made by a soccer team. These metrics only require Cartesian information about the players\u2019 positions on the field. As a case study, three matches played by the same professional soccer team were considered, including variables computed for the half of the match (first half vs second half) and the final score of the game for an analysis of variance of tactical performance, trying to identify the influence of such variables on the collective organisation. The data were collected at 1\u2009Hz and from this process, 9218 instances of useful time were collected. The results revealed that the different kinds of final scores had significant effects on the tactical performance. The comparison between two halves of the match revealed significant differences with a small effect size on tactical performance. In summary, this study showed that these new tactical metrics can be a computational option to increase a coaches\u2019 knowledge about the defensive organisation of soccer teams, giving them the possibility to augment their own perception with metrics that can provide specific information. <\/jats:p>","DOI":"10.1177\/1754337115583198","type":"journal-article","created":{"date-parts":[[2015,5,5]],"date-time":"2015-05-05T00:50:38Z","timestamp":1430787038000},"page":"124-132","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":8,"title":["Developing a tactical metric to estimate the defensive area of soccer teams: The defensive play area"],"prefix":"10.1177","volume":"230","author":[{"given":"Filipe M","family":"Clemente","sequence":"first","affiliation":[{"name":"Department of Education, Coimbra College of Education (ESEC), Polytechnic Institute of Coimbra (Instituto Polit\u00e9cnico de Coimbra), Coimbra, Portugal"},{"name":"Faculty of Sport Sciences and Physical Education, University of Coimbra, Coimbra, Portugal"}]},{"given":"Fernando ML","family":"Martins","sequence":"additional","affiliation":[{"name":"Department of Education, Coimbra College of Education (ESEC), Polytechnic Institute of Coimbra (Instituto Polit\u00e9cnico de Coimbra), Coimbra, Portugal"},{"name":"Instituto de Telecomunica\u00e7\u00f5es \u2013 Delega\u00e7\u00e3o da Covilh\u00e3, Coimbra, Portugal"}]},{"given":"Micael S","family":"Couceiro","sequence":"additional","affiliation":[{"name":"RoboCorp, Department of Electrical Engineering (DEE), Engineering Institute of Coimbra (ISEC), Polytechnic Institute of Coimbra (Instituto Polit\u00e9cnico de Coimbra), Coimbra, Portugal"},{"name":"Ingeniarius, Lda., Mealhada, Portugal"}]},{"given":"Rui S","family":"Mendes","sequence":"additional","affiliation":[{"name":"Department of Education, Coimbra College of Education (ESEC), Polytechnic Institute of Coimbra (Instituto Polit\u00e9cnico de Coimbra), Coimbra, Portugal"}]},{"given":"Ant\u00f3nio J","family":"Figueiredo","sequence":"additional","affiliation":[{"name":"Faculty of Sport Sciences and Physical Education, University of Coimbra, Coimbra, Portugal"},{"name":"CIDAF, Faculty of Sport Sciences and Physical Education, University of Coimbra, Coimbra, Portugal"}]}],"member":"179","published-online":{"date-parts":[[2015,5,4]]},"reference":[{"key":"bibr1-1754337115583198","volume-title":"Notational analysis of sport: systems for better coaching and performance in sport","author":"Hughes M","year":"2004"},{"key":"bibr2-1754337115583198","doi-asserted-by":"publisher","DOI":"10.1007\/BF03262285"},{"key":"bibr3-1754337115583198","doi-asserted-by":"publisher","DOI":"10.1080\/24748668.2013.11868680"},{"key":"bibr4-1754337115583198","doi-asserted-by":"publisher","DOI":"10.1080\/02640410903503640"},{"key":"bibr5-1754337115583198","doi-asserted-by":"publisher","DOI":"10.1080\/24748668.2012.11868607"},{"key":"bibr6-1754337115583198","first-page":"40","volume":"2","author":"Schollhorn W","year":"2003","journal-title":"Int J Computer Sci Sport"},{"key":"bibr7-1754337115583198","doi-asserted-by":"publisher","DOI":"10.1080\/17461391.2010.499967"},{"key":"bibr8-1754337115583198","doi-asserted-by":"publisher","DOI":"10.1260\/1747-9541.8.4.723"},{"key":"bibr9-1754337115583198","first-page":"515","volume":"22","author":"Okihara K","year":"2004","journal-title":"J Sport Sci"},{"key":"bibr10-1754337115583198","doi-asserted-by":"publisher","DOI":"10.1080\/24748668.2001.11868248"},{"key":"bibr11-1754337115583198","unstructured":"Abdel-Aziz Y, Karara H. 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