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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" article-type="research-article" dtd-version="1.1d1" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher">Молодежный инновационный вестник</journal-id><journal-title-group><journal-title>Молодежный инновационный вестник</journal-title></journal-title-group><issn publication-format="print">2415-7805</issn><publisher><publisher-name>Федеральное государственное бюджетное образовательное учреждение высшего образования "Воронежский государственный медицинский университет имени Н.Н. Бурденко" Министерства здравоохранения Российской Федерации</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">11509</article-id><article-categories><subj-group subj-group-type="heading"><subject>Conference Proceedings</subject></subj-group></article-categories><title-group><article-title>Assessment of B-Group Vitamin Status in Elite Ice Hockey Players and Its Correlation with Key Indicators of Cardiopulmonary Exercise Testing</article-title></title-group><contrib-group><contrib contrib-type="author"><name name-style="western"><surname>Kabanov</surname><given-names>Andrey Romanovich</given-names></name><bio>&lt;p&gt;Postgraduate Student of the Department of Clinical Pharmacology and Propaedeutics of Internal Diseases. I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University)&lt;/p&gt;</bio><email>kabanov.ar@mail.ru</email><uri content-type="orcid">https://orcid.org/0009-0005-2769-4908</uri><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author"><name name-style="western"><surname>Shikh</surname><given-names>Evgeniya Valerievna</given-names></name><email>shikh_e_v@staff.sechenov.ru</email><uri content-type="orcid">https://orcid.org/0000-0001-6589-7654</uri><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author"><name name-style="western"><surname>Achkasov</surname><given-names>Evgeny Evgenevich</given-names></name><bio>&lt;p&gt;Prof., MD, Head of the Department of Sports Medicine and Medical Rehabilitation, Director of the Medical Rehabilitation Clinic of the Federal State Autonomous Educational Institution of Higher Education Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University).&lt;/p&gt;</bio><email>achkasov_e_e@staff.sechenov.ru</email><uri content-type="orcid">https://orcid.org/0000-0001-9964-5199</uri><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff id="aff-1">I.M. Sechenov First Moscow State Medical University</aff><pub-date date-type="epub" iso-8601-date="2026-10-01" publication-format="electronic"><day>01</day><month>10</month><year>2026</year></pub-date><volume>15</volume><issue>S1</issue><fpage>200</fpage><lpage>201</lpage><history><pub-date date-type="received" iso-8601-date="2026-03-10"><day>10</day><month>03</month><year>2026</year></pub-date><pub-date date-type="accepted" iso-8601-date="2026-04-05"><day>05</day><month>04</month><year>2026</year></pub-date></history><permissions><copyright-statement>Copyright © 2026, Kabanov A.R., Shikh E.V., Achkasov E.E.</copyright-statement><copyright-year>2026</copyright-year></permissions><abstract>&lt;p style="text-align: justify;"&gt;Adequate B-vitamin status is important for energy metabolism, aerobic performance, and athletes adaptation to physical exertion. The aim of the study was to investigate the relationship between plasma levels of vitamins B&lt;sub&gt;1&lt;/sub&gt;, B&lt;sub&gt;2&lt;/sub&gt;, and B&lt;sub&gt;6&lt;/sub&gt; and the parameters of cardiopulmonary exercise testing in elite ice hockey players during the preseason period. The study included 42 elite athletes. Plasma concentrations of thiamine, riboflavin, and pyridoxine were determined using high-performance liquid chromatography coupled with tandem mass spectrometry. Functional status was assessed using a cycle ergometer test with gas analysis. It was found that in 50% of those examined, the level of vitamin B&lt;sub&gt;1&lt;/sub&gt; was below the reference values; for vitamin B&lt;sub&gt;6&lt;/sub&gt;, this was observed in 30.9%, and for vitamin B&lt;sub&gt;2&lt;/sub&gt;, in 9.5%. The mean VO₂max value was 42.495.45 mL/kg/min. A moderate positive correlation was identified between vitamin B1 concentration and VO₂max (r=+0.43; p0.05). Athletes with combined B-group vitamin deficiency demonstrated lower aerobic performance compared with participants without deficiency. The results obtained confirm the relevance of laboratory monitoring of vitamin status in athletes for the subsequent personalization of nutritional support.&lt;/p&gt;</abstract><kwd-group xml:lang="en"><kwd>thiamine</kwd><kwd>riboflavin</kwd><kwd>pyridoxine</kwd><kwd>cardiopulmonary exercise test</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>тиамин</kwd><kwd>рибофлавин</kwd><kwd>пиридоксин</kwd><kwd>кардиореспираторный нагрузочный тест</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Раджабкадиев Р.М., Вржесинская О.А., Бекетова Н.А., Кошелева О.В., Выборная К.В. Содержание некоторых витаминов в рационе питания и сыворотке крови высококвалифицированных спортсменов. 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