{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,27]],"date-time":"2026-10-27T20:02:04Z","timestamp":1793131324456,"version":"4.5.0"},"reference-count":49,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2021,4,22]],"date-time":"2021-04-22T00:00:00Z","timestamp":1619049600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>This study aimed to analyze the correlations among weekly (w) acute workload (wAW), chronic workload (wCW), acute\/chronic workload ratio (wACWR), training monotony (wTM), training strain (wTS), sleep quality (wSleep), delayed onset muscle soreness (wDOMS), fatigue (wFatigue), stress (wStress), and Hooper index (wHI) in pre-, early, mid-, and end-of-season. Twenty-one elite soccer players (age: 16.1 \u00b1 0.2 years) were monitored weekly on training load and well-being for 36 weeks. Higher variability in wAW (39.2%), wFatigue (84.4%), wStress (174.3%), and wHI (76.3%) at the end-of-season were reported. At mid-season, higher variations in wSleep (59.8%), TM (57.6%), and TS (111.1%) were observed. Moderate to very large correlations wAW with wDOMS (r = 0.617, p = 0.007), wFatigue, wStress, and wHI were presented. Similarly, wCW reported a meaningful large association with wDOMS (r = 0.526, p &lt; 0.001); moderate to very large associations with wFatigue (r = 0.649, p = 0.005), wStress, and wHI. Moreover, wTM presented a large correlation with wSleep (r = 0.515, p &lt; 0.001); and a negatively small association with wStress (r = \u22120.426, p = 0.003). wTS showed a small to large correlation with wSleep (r = 0.400, p = 0.005) and wHI; also, a large correlation with wDOMS (r = 0.556, p = 0.028) and a moderate correlation with wFatigue (r = 0.343, p = 0.017). Wellness status may be considered a useful tool to provide determinant elite players\u2019 information to coaches and to identify important variations in training responses.<\/jats:p>","DOI":"10.3390\/ijerph18094451","type":"journal-article","created":{"date-parts":[[2021,4,22]],"date-time":"2021-04-22T13:59:14Z","timestamp":1619099954000},"page":"4451","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":50,"title":["Association between Training Load and Well-Being Measures in Young Soccer Players during a Season"],"prefix":"10.3390","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7951-8977","authenticated-orcid":false,"given":"Hadi","family":"Nobari","sequence":"first","affiliation":[{"name":"Department of Physical Education and Sports, University of Granada, 18010 Granada, Spain"},{"name":"Sports Scientist, Sepahan Football Club, Isfahan 81887-78473, Iran"},{"name":"Department of Exercise Physiology, Faculty of Sport Sciences, University of Isfahan, Isfahan 81746-7344, Iran"},{"name":"HEME Research Group, Faculty of Sport Sciences, University of Extremadura, 10003 C\u00e1ceres, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0145-2143","authenticated-orcid":false,"given":"Ana Ruivo","family":"Alves","sequence":"additional","affiliation":[{"name":"Department of Arts, Humanities and Sports, Polytechnic Institute of Beja, School of Education, 7800-295 Beja, Portugal"},{"name":"Research Center in Sports Sciences, Health Sciences and Human Development, CIDESD, 5001-801Vila Real, Portugal"},{"name":"Laboratory of Physical Activity and Health, Polytechnic Institute of Beja, School of Education, 7800-295 Beja, Portugal"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hamed","family":"Haghighi","sequence":"additional","affiliation":[{"name":"Department of Sport Injuries and Corrective Exercises, Faculty of Sport Sciences, University of Isfahan, Isfahan 81746-7344, Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9813-2842","authenticated-orcid":false,"given":"Filipe Manuel","family":"Clemente","sequence":"additional","affiliation":[{"name":"Polytechnic Institute of Viana do Castelo, School of Sport and Leisure, 4900-347 Viana do Castelo, Portugal"},{"name":"Institute of Telecommunications, IT-Branch Covilh\u00e3, 6200-001 Covilh\u00e3, Portugal"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6377-9950","authenticated-orcid":false,"given":"Jorge","family":"Carlos-Vivas","sequence":"additional","affiliation":[{"name":"HEME Research Group, Faculty of Sport Sciences, University of Extremadura, 10003 C\u00e1ceres, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4054-9132","authenticated-orcid":false,"given":"Jorge","family":"P\u00e9rez-G\u00f3mez","sequence":"additional","affiliation":[{"name":"HEME Research Group, Faculty of Sport Sciences, University of Extremadura, 10003 C\u00e1ceres, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7677-5070","authenticated-orcid":false,"given":"Luca Paolo","family":"Ardig\u00f2","sequence":"additional","affiliation":[{"name":"Department of Neurosciences, Biomedicine and Movement Sciences, School of Exercise and Sport Science, University of Verona, 37134 Verona, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,4,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1370","DOI":"10.1519\/JSC.0b013e3181a4e82f","article-title":"Seasonal Variation in Physiological Fitness of a Semiprofessional Soccer Team","volume":"23","author":"Caldwell","year":"2009","journal-title":"J. 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