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Those injuries often result from suboptimal training programs that were not designed according to the players\u2019 individual needs. This prospective study aimed to examine in detail the effects of sports injuries on professional football players\u2019 weekly external load performances. Thirty-three male professional football players were monitored using 10-Hz Global Positioning System (GPS) units (Apex pro series, StatSports) during an entire season. The variables considered in the analysis were total distance (TD), high-speed running (HSR), accelerations (ACC), and decelerations (DEC). The comparisons were made between the four-week block before injury (\u20134T), four-week block after return (+4T), and players\u2019 season averages (S). Players displayed significantly higher values of TD, HSR, ACC, and DEC in the \u20134T, compared to the other two moments (+4T and S). Furthermore, the comparison between the +4T and S showed no significant variations in the GPS metrics. It was shown that a significant increase in players\u2019 weekly external load performance over a four\u2013week period may have a negative effect on the occurrence of injuries from a professional football standpoint. Future research should consider the effects of injury severity on players\u2019 external load variations.<\/jats:p>","DOI":"10.3390\/ijerph20021121","type":"journal-article","created":{"date-parts":[[2023,1,9]],"date-time":"2023-01-09T01:36:17Z","timestamp":1673228177000},"page":"1121","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Weekly External Load Performance Effects on Sports Injuries of Male Professional Football Players"],"prefix":"10.3390","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4838-4931","authenticated-orcid":false,"given":"Francisco","family":"Martins","sequence":"first","affiliation":[{"name":"Department of Physical Education and Sport, University of Madeira, 9020-105 Funchal, Portugal"},{"name":"LARSYS, Interactive Technologies Institute, 9020-105 Funchal, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9850-7771","authenticated-orcid":false,"given":"Adilson","family":"Marques","sequence":"additional","affiliation":[{"name":"CIPER, Faculty of Human Kinetics, University of Lisbon, 1495-751 Lisbon, Portugal"},{"name":"ISAMB, Faculty of Medicine, University of Lisbon, 1649-020 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8364-6832","authenticated-orcid":false,"given":"C\u00edntia","family":"Fran\u00e7a","sequence":"additional","affiliation":[{"name":"Department of Physical Education and Sport, University of Madeira, 9020-105 Funchal, Portugal"},{"name":"LARSYS, Interactive Technologies Institute, 9020-105 Funchal, Portugal"},{"name":"Research Center in Sports Sciences, Health Sciences, and Human Development (CIDESD), 5000-801 Vila Real, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8681-0642","authenticated-orcid":false,"given":"Hugo","family":"Sarmento","sequence":"additional","affiliation":[{"name":"University of Coimbra, Research Unit for Sport and Physical Activity (CIDAF), Faculty of Sport Sciences and Physical Education, 3004-504 Coimbra, Portugal"}]},{"given":"Ricardo","family":"Henriques","sequence":"additional","affiliation":[{"name":"Mar\u00edtimo da Madeira\u2014Futebol, SAD, 9020-208 Funchal, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9845-5190","authenticated-orcid":false,"given":"Andreas","family":"Ihle","sequence":"additional","affiliation":[{"name":"Department of Psychology, University of Geneva, 1205 Geneva, Switzerland"},{"name":"Center for the Interdisciplinary Study of Gerontology and Vulnerability, University of Geneva, 1205 Geneva, Switzerland"},{"name":"Swiss National Centre of Competence in Research LIVES\u2014Overcoming Vulnerability: Life Course Perspectives, 1015 Lausanne, Switzerland"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3577-3439","authenticated-orcid":false,"given":"Marcelo","family":"de Maio Nascimento","sequence":"additional","affiliation":[{"name":"Department of Physical Education, Federal University of Vale do S\u00e3o Francisco, Petrolina 56304-917, Brazil"}]},{"given":"Carolina","family":"Saldanha","sequence":"additional","affiliation":[{"name":"University of Coimbra, Research Unit for Sport and Physical Activity (CIDAF), Faculty of Sport Sciences and Physical Education, 3004-504 Coimbra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2128-4116","authenticated-orcid":false,"given":"Krzysztof","family":"Przednowek","sequence":"additional","affiliation":[{"name":"Institute of Physical Culture Sciences, Medical College, University of Rzesz\u00f3w, 35-959 Rzesz\u00f3w, Poland"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0927-692X","authenticated-orcid":false,"given":"\u00c9lvio R\u00fabio","family":"Gouveia","sequence":"additional","affiliation":[{"name":"Department of Physical Education and Sport, University of Madeira, 9020-105 Funchal, Portugal"},{"name":"LARSYS, Interactive Technologies Institute, 9020-105 Funchal, Portugal"},{"name":"Center for the Interdisciplinary Study of Gerontology and Vulnerability, University of Geneva, 1205 Geneva, Switzerland"}]}],"member":"1968","published-online":{"date-parts":[[2023,1,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"863","DOI":"10.1007\/s11332-021-00867-z","article-title":"Injuries and risk factors in professional football players during four consecutive seasons","volume":"18","author":"Smpokos","year":"2021","journal-title":"Sport Sci. 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