{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,29]],"date-time":"2026-10-29T04:44:52Z","timestamp":1793249092136,"version":"4.5.0"},"reference-count":25,"publisher":"SAGE Publications","issue":"3","license":[{"start":{"date-parts":[[2020,1,28]],"date-time":"2020-01-28T00:00:00Z","timestamp":1580169600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Am J Sports Med"],"published-print":{"date-parts":[[2020,3]]},"abstract":"<jats:sec>\n                    <jats:title>Background:<\/jats:title>\n                    <jats:p>Preseason training develops players\u2019 physical capacities and prepares them for the demands of the competitive season. In rugby, Australian football, and American football, preseason training may protect elite players against in-season injury. However, no study has evaluated this relationship at the team level in elite soccer.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Purpose\/Hypothesis:<\/jats:title>\n                    <jats:p>The aim of this study was to investigate whether the number of preseason training sessions completed by elite soccer teams was associated with team injury rates and player availability during the competitive season. It was hypothesized that elite soccer teams who participate in more preseason training will sustain fewer injuries during the competitive season.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Study Design:<\/jats:title>\n                    <jats:p>Descriptive epidemiology study.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>We used the Union of European Football Associations (UEFA) injury dataset to analyze 44 teams for up to 15 seasons (total, 244 team-seasons). Separate linear regression models examined the association between the number of team preseason training sessions and 5 in-season injury measures. Injury-related problems per team were quantified by totals of the following: (1) injury burden, (2) severe injury incidence, (3) training attendance, (4) match availability, and (5) injury incidence.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>\n                      Teams averaged 30 preseason training sessions (range, 10-51). A greater number of preseason training sessions was associated with less injury load during the competitive season in 4 out of 5 injury-related measures. Our linear regression models revealed that for every 10 additional preseason training sessions that the team performed, the in-season injury burden was 22 layoff days lower per 1000 hours ( P = .002), the severe injury incidence was 0.18 severe injuries lower per 1000 hours ( P = .015), the training attendance was 1.4 percentage points greater ( P = .014), and the match availability was 1.0 percentage points greater ( P = .042). As model fits were relatively low (adjusted R\n                      <jats:sup>2<\/jats:sup>\n                      = 1.3%-3.2%), several factors that contribute to in-season injury outcomes were unaccounted for.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>Teams that performed a greater number of preseason training sessions had \u201chealthier\u201d in-season periods. Many other factors also contribute to in-season injury rates. Understanding the benefit of preseason training on in-season injury patterns may inform sport teams\u2019 planning and preparation.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/0363546519899359","type":"journal-article","created":{"date-parts":[[2020,1,28]],"date-time":"2020-01-28T16:21:50Z","timestamp":1580228510000},"page":"723-729","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":61,"title":["Are Elite Soccer Teams\u2019 Preseason Training Sessions Associated With Fewer In-Season Injuries? A 15-Year Analysis From the Union of European Football Associations (UEFA) Elite Club Injury Study"],"prefix":"10.1177","volume":"48","author":[{"given":"Jan","family":"Ekstrand","sequence":"first","affiliation":[{"name":"Division of Community Medicine, Department of Medical and Health Sciences, Link\u00f6ping University, Link\u00f6ping, Sweden"},{"name":"Football Research Group, Link\u00f6ping, Sweden"},{"name":"Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Armin","family":"Spreco","sequence":"additional","affiliation":[{"name":"Football Research Group, Link\u00f6ping, Sweden"},{"name":"Region \u00d6sterg\u00f6tland, Center for Health Services Development, Link\u00f6ping, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Johann","family":"Windt","sequence":"additional","affiliation":[{"name":"Football Research Group, Link\u00f6ping, Sweden"},{"name":"United States Olympic Committee, Colorado Springs, Colorado, USA"},{"name":"United States Coalition for the Prevention of Illness and Injury in Sport, Colorado Springs, Colorado, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Karim M.","family":"Khan","sequence":"additional","affiliation":[{"name":"Football Research Group, Link\u00f6ping, Sweden"},{"name":"Department of Family Practice, University of British Columbia, Vancouver, British Columbia, 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