{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,29]],"date-time":"2026-10-29T17:35:11Z","timestamp":1793295311893,"version":"4.5.0"},"reference-count":20,"publisher":"Human Kinetics","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026]]},"abstract":"<jats:p>\n                    <jats:bold>\n                      <jats:italic>Purpose<\/jats:italic>\n                    <\/jats:bold>\n                    <jats:italic>:<\/jats:italic>\n                    This retrospective study investigated the relationships between maximal oxygen uptake (\n                    <jats:inline-formula\/>\n                    ), maximal fat oxidation (MFO), maximal lower-limb power output (P\n                    <jats:sub>max<\/jats:sub>\n                    ), and match running performance in youth national-level football players across a competitive season.\n                    <jats:bold>\n                      <jats:italic>Methods<\/jats:italic>\n                    <\/jats:bold>\n                    <jats:italic>:<\/jats:italic>\n                    During the preseason period, 41 youth national-level football players from the academy of a French Ligue 1 club completed a series of laboratory and field-based assessments. Incremental and fasted submaximal graded treadmill tests were performed to determine\n                    <jats:inline-formula\/>\n                    and MFO via indirect calorimetry, whereas a horizontal force\u2013velocity\u2013power profile was used to assess P\n                    <jats:sub>max<\/jats:sub>\n                    . Match running performance was monitored throughout the season using 10-Hz GPS. A nonlinear, decision tree modeling approach was then applied to identify discriminative thresholds in physiological variables that characterize distinct player profiles.\n                    <jats:bold>\n                      <jats:italic>Results<\/jats:italic>\n                    <\/jats:bold>\n                    <jats:italic>:<\/jats:italic>\n                    Among the 3 determinants of game performance examined,\n                    <jats:inline-formula\/>\n                    was the only variable linearly associated with total match distance (\n                    <jats:italic>P<\/jats:italic>\n                    \u2009&lt;\u2009.01). In contrast, MFO was the sole predictor identified of distance covered at speed running &gt;15\u00a0km\u00b7h\n                    <jats:sup>\u22121<\/jats:sup>\n                    (\n                    <jats:italic>P<\/jats:italic>\n                    \u2009&lt;\u2009.01), with a threshold of 0.73\u00a0g\u00b7min\n                    <jats:sup>\u22121<\/jats:sup>\n                    distinguishing players covering greater moderate- to high-speed distances (\n                    <jats:italic>P<\/jats:italic>\n                    \u2009&lt;\u2009.01).\n                    <jats:bold>\n                      <jats:italic>Conclusions<\/jats:italic>\n                    <\/jats:bold>\n                    <jats:italic>:<\/jats:italic>\n                    These results suggest that monitoring both\n                    <jats:inline-formula\/>\n                    and MFO are complementary for optimizing football players\u2019 match performance. While\n                    <jats:inline-formula\/>\n                    remains crucial for achieving a high total match distance in national-level players, MFO appears more strongly associated with the distance covered at moderate and high running speeds.\n                  <\/jats:p>","DOI":"10.1123\/ijspp.2026-0143","type":"journal-article","created":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T09:45:49Z","timestamp":1789551949000},"page":"1-5","source":"Crossref","is-referenced-by-count":0,"title":["Maximal Fat Oxidation Is Associated With Moderate- and High-Speed Running Performance During Competitive Matches in Youth National-Level Football Players: A Retrospective In-Season Study"],"prefix":"10.1123","author":[{"given":"Pierre","family":"Hernot","sequence":"first","affiliation":[{"name":"Laboratory \u201cMovement Sport and Health Sciences\u201d EA7470, University of Rennes\/ENS Rennes, Rennes, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Arthur","family":"Guillotel","sequence":"additional","affiliation":[{"name":"Laboratory \u201cMovement Sport and Health Sciences\u201d EA7470, University of Rennes\/ENS Rennes, Rennes, France"},{"name":"Stade Rennais FC, Rennes, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mathieu","family":"Horeau","sequence":"additional","affiliation":[{"name":"Laboratory \u201cMovement Sport and Health Sciences\u201d EA7470, University of Rennes\/ENS Rennes, Rennes, France"},{"name":"Department of Biomedical Sciences, University of Padova, Padova, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rufin","family":"Boumpoutou","sequence":"additional","affiliation":[{"name":"Laboratory \u201cMovement Sport and Health Sciences\u201d EA7470, University of Rennes\/ENS Rennes, Rennes, France"},{"name":"Rennes Ortho Sport, Polyclinique Saint Laurent, Rennes,\u00a0France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Laurent","family":"Bessi\u00e8re","sequence":"additional","affiliation":[{"name":"Stade Rennais FC, Rennes, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S\u00e9bastien","family":"Sangnier","sequence":"additional","affiliation":[{"name":"Stade Rennais FC, Rennes, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1492-2789","authenticated-orcid":true,"given":"David","family":"Martin","sequence":"additional","affiliation":[{"name":"Mathematics Research Institute of Rennes (IRMAR), UMR-CNRS 6625, Rennes, France"},{"name":"Aix-Marseille University, C2VN, Marseille, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1531-6425","authenticated-orcid":true,"given":"Fr\u00e9d\u00e9ric","family":"Derbr\u00e9","sequence":"additional","affiliation":[{"name":"Laboratory \u201cMovement Sport and Health Sciences\u201d EA7470, University of Rennes\/ENS Rennes, Rennes, France"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"100","reference":[{"issue":"2","key":"r1","series-title":"Eur J Appl Physiol","doi-asserted-by":"publisher","first-page":"251","DOI":"10.1007\/s00421-015-3274-x","article-title":"Muscle variables of importance for physiological performance in competitive football","volume":"116","author":"Mohr M","year":"2016","unstructured":"Mohr M, Thomassen M, Girard O, Racinais S, Nybo L. 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