{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,6]],"date-time":"2026-04-06T16:39:24Z","timestamp":1775493564015,"version":"3.50.1"},"reference-count":35,"publisher":"MDPI AG","issue":"19","license":[{"start":{"date-parts":[[2019,9,23]],"date-time":"2019-09-23T00:00:00Z","timestamp":1569196800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The aim of the present study was to assess the accuracy of a multi-camera tracking system (Mediacoach\u00ae) to track elite football players\u2019 movements in real time. A total of 207 observations of 38 official matches from Liga 1, 2, 3\u2122 (2nd Spanish Division, season 2017\/18) were included in the study (88 defenders, 84 midfielders, and 35 attackers of the same team). Total distance (TD, m) distance in zone 4 (DZ4) at a speed of 14\u201321 km\/h, distance in zone 5 (DZ5) at a speed of 21\u201324 km\/h (DZ5), distance in zone 6 (DZ6) at a speed of \u226524 km\/h, maximum speed (km\/h), and number of sprints (actions above 24 km\/h) were registered with the Apex\u00ae GPS system (STATSports\u2122, Newry, N. Ireland) and Mediacoach\u00ae semi-automatic tracking system (LaLiga\u2122, Madrid, Spain). The level of agreement between variables estimated by the two systems was analyzed. Bias was also calculated by deducting the GPS estimated value from the video estimated value, and then dividing the difference score by the GPS estimated value. All variables showed high ICC values (&gt;0.75) and very large correlations (r &gt; 0.70). However the video-based performance analysis system overestimated the results obtained in the different speed zones (DZ5: +16.59 \u00b1 62.29 m; LOA95%: \u2212105.49 to 138.68; DZ6: +93.26 \u00b1 67.76 m; LOA95%: \u221239.55 to 226.07), the number of sprints (+2.27 \u00b1 2.94; LOA95%: \u22123.49 to 8.02), and the maximum speed (+0.32 \u00b1 1.25 km\/h; LOA95%: \u22122.13 to 2.77). The maximum bias was found in DZ6 (47%). This demonstrates that Mediacoach\u00ae is as accurate as a GPS system to obtain objective data in real time, adapted to physical and movement demands of elite football, especially for total distance and distances traveled at medium speeds.<\/jats:p>","DOI":"10.3390\/s19194113","type":"journal-article","created":{"date-parts":[[2019,9,23]],"date-time":"2019-09-23T11:02:00Z","timestamp":1569236520000},"page":"4113","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":64,"title":["Validation of a Video-Based Performance Analysis System (Mediacoach\u00ae) to Analyze the Physical Demands during Matches in LaLiga"],"prefix":"10.3390","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2029-1277","authenticated-orcid":false,"given":"Jose Luis","family":"Felipe","sequence":"first","affiliation":[{"name":"Universidad Europea de Madrid, Faculty of Sport Sciences, Villaviciosa de Od\u00f3n, 28670 Madrid, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1741-5566","authenticated-orcid":false,"given":"Jorge","family":"Garcia-Unanue","sequence":"additional","affiliation":[{"name":"Universidad de Castilla-La Mancha, IGOID Research Group, 45071 Toledo, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2633-4709","authenticated-orcid":false,"given":"David","family":"Viejo-Romero","sequence":"additional","affiliation":[{"name":"Universidad Europea de Madrid, Faculty of Sport Sciences, Villaviciosa de Od\u00f3n, 28670 Madrid, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6997-8099","authenticated-orcid":false,"given":"Archit","family":"Navandar","sequence":"additional","affiliation":[{"name":"Universidad Europea de Madrid, Faculty of Sport Sciences, Villaviciosa de Od\u00f3n, 28670 Madrid, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0017-0184","authenticated-orcid":false,"given":"Javier","family":"S\u00e1nchez-S\u00e1nchez","sequence":"additional","affiliation":[{"name":"Universidad Europea de Madrid, Faculty of Sport Sciences, Villaviciosa de Od\u00f3n, 28670 Madrid, Spain"}]}],"member":"1968","published-online":{"date-parts":[[2019,9,23]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"701","DOI":"10.1007\/s40279-014-0144-3","article-title":"Evaluation of research using computerised tracking systems (Amisco\u00ae and Prozone\u00ae) to analyse physical performance in elite soccer: A systematic review","volume":"44","author":"Castellano","year":"2014","journal-title":"Sports Med."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"808","DOI":"10.1016\/j.humov.2013.06.002","article-title":"Match performance and physical capacity of players in the top three competitive standards of English professional soccer","volume":"32","author":"Bradley","year":"2013","journal-title":"Hum. 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