{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,6]],"date-time":"2026-03-06T06:12:25Z","timestamp":1772777545171,"version":"3.50.1"},"reference-count":33,"publisher":"Human Kinetics","issue":"7","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2023,7,1]]},"abstract":"<jats:p><jats:italic><jats:bold>Purpose<\/jats:bold>:<\/jats:italic> To compare the load and wellness of second-team academy football players during a first-team preseason with those of first-team players and those of their previous second-team preseason. <jats:italic><jats:bold>Methods<\/jats:bold>:<\/jats:italic> Athletic Club\u2019s first- (n\u2009=\u200910) and second-team (n\u2009=\u20099) players were prospectively followed during the 2019\u201320 first- and second-team and 2020\u201321 first-team preseasons. Weekly external and internal loads and average wellness <jats:italic>z<\/jats:italic>-scores (fatigue, sleep quality, muscle soreness, stress, and mood) were compared between preseasons and teams. <jats:italic><jats:bold>Results<\/jats:bold>:<\/jats:italic> While training together during the 2020\u201321 preseason, second-team players performed more decelerations &lt;\u22123\u00a0m\/s<jats:sup>2<\/jats:sup> per week than first-team players (<jats:italic>moderate effect size<\/jats:italic>). For first-team players, there were only small differences between preseasons in external load, but session rating of perceived exertion was higher (<jats:italic>moderate<\/jats:italic>) and stress (<jats:italic>moderate<\/jats:italic>) and mood (<jats:italic>large<\/jats:italic>) <jats:italic>z<\/jats:italic>-scores were worse in 2020\u201321. For second-team players, more total distance (<jats:italic>large<\/jats:italic>), accelerations &gt;3\u00a0m\/s<jats:sup>2<\/jats:sup> (<jats:italic>large<\/jats:italic>), and decelerations &lt;\u22123\u00a0m\/s<jats:sup>2<\/jats:sup> (<jats:italic>very large<\/jats:italic>) were performed; total loading (<jats:italic>moderate<\/jats:italic>) and session rating of perceived exertion (<jats:italic>moderate<\/jats:italic>) were higher; and fatigue (very <jats:italic>large<\/jats:italic>) and stress (<jats:italic>moderate<\/jats:italic>) <jats:italic>z<\/jats:italic>-scores were worse during the 2020\u201321 first-team preseason compared to their previous second-team preseason. <jats:italic><jats:bold>Conclusions<\/jats:bold>:<\/jats:italic> Players transitioning from the second team faced higher external and internal loads, fatigue, and stress during the first-team preseason compared to the previous second-team preseason. Player development and monitoring plans appear necessary to manage the transition from the academy to the first team.<\/jats:p>","DOI":"10.1123\/ijspp.2022-0324","type":"journal-article","created":{"date-parts":[[2023,4,27]],"date-time":"2023-04-27T12:54:42Z","timestamp":1682600082000},"page":"726-733","source":"Crossref","is-referenced-by-count":6,"title":["What Are the Load and Wellness of Young Second-Team Football Players When Transitioning to the First Team? 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