{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,22]],"date-time":"2026-02-22T01:20:35Z","timestamp":1771723235748,"version":"3.50.1"},"reference-count":45,"publisher":"Human Kinetics","issue":"9","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2023,9,1]]},"abstract":"<jats:p><jats:italic><jats:bold>Purpose<\/jats:bold>:<\/jats:italic> This study investigated within- and between-matches blood lactate (La<jats:sup>\u2212<\/jats:sup>) responses across an international Rugby Sevens tournament (5 matches over 2\u00a0d) in male and female players. <jats:italic><jats:bold>Methods<\/jats:bold>:<\/jats:italic> Earlobe blood samples were taken from 25 professional players around matches: before warm-up (PRE), immediately upon finishing match participation (POST), and 30 minutes postmatch (30\u00a0min). <jats:italic><jats:bold>Results<\/jats:bold>:<\/jats:italic> POST [La<jats:sup>\u2212<\/jats:sup>] (mean [SD], range) for males was 10.3 (3.2; 2.9\u201320.2) mmol\u00b7L<jats:sup>\u22121<\/jats:sup> and for females was 9.1 (2.3; 3.4\u201314.6) mmol\u00b7L<jats:sup>\u22121<\/jats:sup>. Linear mixed-effects models revealed a decrease in POST [La<jats:sup>\u2212<\/jats:sup>] after match 5, compared to match 1. Increased PRE [La<jats:sup>\u2212<\/jats:sup>] was found before match 2 (+0.8 [0.6\u20131.1]\u00a0mmol\u00b7L<jats:sup>\u22121<\/jats:sup>), match 3 (+0.8 [0.5\u20131.1]\u00a0mmol\u00b7L<jats:sup>\u22121<\/jats:sup>), and match 5 (+0.6 [0.4\u20130.9]\u00a0mmol\u00b7L<jats:sup>\u22121<\/jats:sup>) compared to match 1 (all <jats:italic>P<\/jats:italic>\u2009&lt;\u2009.001). The [La<jats:sup>\u2212<\/jats:sup>] remained elevated at 30\u00a0min, compared to PRE (+1.7 [1.4\u20132.0]\u00a0mmol\u00b7L<jats:sup>\u22121<\/jats:sup>, <jats:italic>P<\/jats:italic>\u2009&lt;\u2009.001), with \u223c20% of values persisting &gt;4\u00a0mmol\u00b7L<jats:sup>\u22121<\/jats:sup>. Higher POST was observed in males compared to females (+1.6 [0.1\u20133.2]\u00a0mmol\u00b7L<jats:sup>\u22121<\/jats:sup>, <jats:italic>P<\/jats:italic>\u2009=\u2009.042); however, no differences between sexes were found across 30 min or PRE [La<jats:sup>\u2212<\/jats:sup>]. No [La<jats:sup>\u2212<\/jats:sup>] differences between positions (backs and forwards) were identified. <jats:italic><jats:bold>Conclusions<\/jats:bold>:<\/jats:italic> Lactate concentrations above 10\u00a0mmol\u00b7L<jats:sup>\u22121<\/jats:sup> are required to effectively simulate the anaerobic demands of international Rugby Sevens matches. Practitioners are advised to individualize anaerobic training prescription due to the substantial variability observed within positional groups. Additionally, improving athletes\u2019 metabolic recovery capacity through training, nutrition, and recovery interventions may enhance physical preparation for subsequent matches within a day, where incomplete lactate clearance was observed.<\/jats:p>","DOI":"10.1123\/ijspp.2023-0167","type":"journal-article","created":{"date-parts":[[2023,8,18]],"date-time":"2023-08-18T10:38:23Z","timestamp":1692355103000},"page":"927-936","source":"Crossref","is-referenced-by-count":3,"title":["Blood Lactate Responses of Male and Female Players Across an International Rugby Sevens Tournament"],"prefix":"10.1123","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2099-5343","authenticated-orcid":true,"given":"Carl","family":"James","sequence":"first","affiliation":[{"name":"Hong Kong Sports Institute (HKSI), Hong Kong, Hong Kong"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-0734-6094","authenticated-orcid":true,"given":"James","family":"Rees","sequence":"additional","affiliation":[{"name":"Hong Kong Rugby Union (HKRU), Hong Kong, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Henry","family":"Chong","sequence":"additional","affiliation":[{"name":"Hong Kong Sports Institute (HKSI), Hong Kong, Hong Kong"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8483-7187","authenticated-orcid":true,"given":"Lee","family":"Taylor","sequence":"additional","affiliation":[{"name":"School of Sport, Exercise and Health Sciences, Loughborough University, National Centre for Sport and Exercise Medicine (NCSEM), Loughborough, United Kingdom"},{"name":"School of Sport, Exercise and Rehabilitation, Faculty of Health, University of Technology Sydney (UTS), Broadway, NSW, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2900-7460","authenticated-orcid":true,"given":"Christopher M.","family":"Beaven","sequence":"additional","affiliation":[{"name":"Te Huataki Waiora School of Health, University of Waikato, Tauranga, New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7342-4240","authenticated-orcid":true,"given":"Mitch","family":"Henderson","sequence":"additional","affiliation":[{"name":"School of Sport, Exercise and Rehabilitation, Faculty of Health, University of Technology Sydney (UTS), Broadway, NSW, Australia"},{"name":"Human Performance Research Centre, University of Technology Sydney (UTS), Broadway, NSW, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9093-7897","authenticated-orcid":true,"given":"Julien S.","family":"Baker","sequence":"additional","affiliation":[{"name":"Centre for Health and Exercise Science Research, Hong Kong Baptist University (HKBU), Hong Kong, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"100","reference":[{"issue":"3","key":"r1","series-title":"Int J Sport Sci Coach","first-page":"451","article-title":"Match demands of professional rugby football codes: a review from 2008 to 2015","volume":"11","author":"Hogarth LW","year":"2016","unstructured":"Hogarth LW, Burkett BJ, McKean MR. 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