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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">actabiomedica</journal-id><journal-title-group><journal-title xml:lang="ru">Acta Biomedica Scientifica</journal-title><trans-title-group xml:lang="en"><trans-title>Acta Biomedica Scientifica</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2541-9420</issn><issn pub-type="epub">2587-9596</issn><publisher><publisher-name>Scientific Centre for Family Health and Human Reproduction Problems</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29413/ABS.2024-9.3.3</article-id><article-id custom-type="elpub" pub-id-type="custom">actabiomedica-4813</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ДИСКУССИОННЫЕ СТАТЬИ, ЛЕКЦИИ, НОВЫЕ ТРЕНДЫ МЕДИЦИНСКОЙ НАУКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>DISCUSSION PAPERS, LECTURES, NEW TRENDS IN MEDICAL SCIENCE</subject></subj-group></article-categories><title-group><article-title>Факторы и уровень физической работоспособности школьников 13–14 лет</article-title><trans-title-group xml:lang="en"><trans-title>Factors and level of physical performance of schoolchildren aged 13–14 years</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8628-6924</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Криволапчук</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Krivolapchuk</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Криволапчук Игорь Альлерович – доктор биологических наук, руководитель лаборатории физиологии мышечной деятельности и физического воспитания; профессор кафедры теории и методики спорта и физического воспитания; профессор кафедры физического воспитания</p><p>119121, г. Москва, ул. Погодинская, 8, корп. 2117519, г. Москва, ул. Кировоградская, 21, корп. 1109542, г. Москва, Рязанский просп., 99</p></bio><bio xml:lang="en"><p>Igor A. Krivolapchuk – Dr. Sc. (Biol.), Head of the Laboratory of Physiology of Muscle Activity and Physical Education; Professor at the Department of Theory and Methodology of Sports and Physical Education; Professor at the Department of Physical Education</p><p>Pogodinskaya str. 8, building 2, Moscow 119121</p><p>Kirovogradskaya str. 21, building 1, Moscow 117519</p><p>Ryazansky ave. 99, Moscow 109542</p></bio><email xlink:type="simple">i.krivolapchuk@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1253-9842</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чернова</surname><given-names>М. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Chernova</surname><given-names>M. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Чернова Мария Борисовна – кандидат педагогических наук, доцент, старший научный сотрудник лаборатории физиологии мышечной деятельности и физического воспитания</p><p>119121, г. Москва, ул. Погодинская, 8, корп. 2</p></bio><bio xml:lang="en"><p>Maria B. Chernova – Cand. Sc. (Ped.), Docent, Senior Research Officer at the Laboratory of Physiology of Muscle Activity and Physical Education</p><p>Pogodinskaya str. 8, building 2, Moscow 119121</p></bio><email xlink:type="simple">mashacernova@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5710-3583</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сухецкий</surname><given-names>В. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Suheckij</surname><given-names>V. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сухецкий Валерий Константинович – доцент кафедры спортивных дисциплин</p><p>230023, г. Гродно, ул. Ожешко, 22</p></bio><bio xml:lang="en"><p>Valerij K. Suheckij – Associate Professor at the Department of Sports Disciplines</p><p>Ozheshko str. 22, Grodno 230023</p></bio><email xlink:type="simple">vsukhetski@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4884-4635</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чичерин</surname><given-names>В. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Chicherin</surname><given-names>V. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Чичерин Вадим Петрович – кандидат биологических наук, доцент, заведующий кафедрой физического воспитания</p><p>109542, г. Москва, Рязанский просп., 99</p></bio><bio xml:lang="en"><p>Vadim P. Chicherin – Cand. Sc. (Biol.), Docent, Head of the Department of Physical Education</p><p>Ryazansky ave. 99, Moscow 109542</p></bio><email xlink:type="simple">vp_chicherin@guu.ru</email><xref ref-type="aff" rid="aff-4"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБНУ «Институт развития, здоровья и адаптации ребёнка»;ГАОУ ВО г. Москвы «Московский государственный университет спорта и туризма»; ФГБОУ ВО «Государственный университет управления»</institution></aff><aff xml:lang="en"><institution>Institute of Child Development, Health and Adaptation; Moscow State University of Sport and Tourism; The State University of Management</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГБНУ «Институт развития, здоровья и адаптации ребёнка»</institution></aff><aff xml:lang="en"><institution>Institute of Child Development, Health and Adaptation</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>УО «Гродненский государственный университет имени Янки Купалы»</institution></aff><aff xml:lang="en"><institution>Yanka Kupala State University of Grodno</institution></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>ФГБОУ ВО «Государственный университет управления»</institution></aff><aff xml:lang="en"><institution>The State University of Management</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>22</day><month>07</month><year>2024</year></pub-date><volume>9</volume><issue>3</issue><fpage>26</fpage><lpage>37</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Криволапчук И.А., Чернова М.Б., Сухецкий В.К., Чичерин В.П., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Криволапчук И.А., Чернова М.Б., Сухецкий В.К., Чичерин В.П.</copyright-holder><copyright-holder xml:lang="en">Krivolapchuk I.A., Chernova M.B., Suheckij V.K., Chicherin V.P.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.actabiomedica.ru/jour/article/view/4813">https://www.actabiomedica.ru/jour/article/view/4813</self-uri><abstract><p>Существует недостаток данных об особенностях физической работоспособности школьников в критический период онтогенеза, связанный с процессом полового созревания.Цель исследования. Выявить факторы и уровень физической работоспособности школьников 13–14 лет с учётом полового созревания.Методика. В исследовании приняли участие здоровые подростки мужского пола 13–14 лет (n = 165). Определяли пять стадий полового созревания. Для диагностики уровня физической работоспособности использовали комплекс функциональных и эргометрических проб и батарею моторных тестов. Структуру работоспособности определяли на основе факторного анализа.Результаты и обсуждение. Идентифицированы факторы, характеризующие физическую работоспособность: аэробная ёмкость; абсолютная аэробная мощность; анаэробная алактатная работоспособность; анаэробная гликолитическая работоспособность; относительная аэробная мощность. Выделенные факторы ассоциируются с зонами относительной мощности. Установлено, что в процессе полового созревания изменения показателей, объединённых в разные факторы, происходят нелинейно и неодновременно. Результаты исследования показывают, что испытуемые одного возраста со II, III и IV стадиями полового созревания отличаются по уровню ключевых биоэнергетических критериев работоспособности. С переходом на более высокие стадии полового созревания наблюдается прогрессивная динамика большинства показателей, связанных с факторами анаэробной работоспособности, тогда как показатели аэробной мощности и ёмкости изменяются разнонаправленно, проявляя в отдельных случаях тенденцию к временному снижению.Заключение. Результаты исследования целесообразно использовать при организации различных видов контроля функционального состояния и нормирования физических нагрузок аэробной и анаэробной направленности у подростков 13–14 лет с разными стадиями полового созревания. Полученные материалы могут служить естественнонаучным основанием для совершенствования системы физического воспитания в целях повышения функциональных возможностей организма детей в критический период онтогенеза, связанный с процессом полового созревания</p></abstract><trans-abstract xml:lang="en"><p>There is an insufficiency of data on the characteristics of physical performance of schoolchildren in the critical period of ontogenesis associated with pubertal development.The aim of the study. To determine the factors and level of physical performance of schoolchildren aged 13–14 years, taking into account pubertal development.Methodology. The study involved healthy male adolescents aged 13–14 years (n = 165). Five stages of puberty were determined. To diagnose the level of physical performance, a complex of functional and ergometric tests and a battery of motor tests were used. The structure of performance was determined based on the factor analysis.Results and discussion. We determined the factors characterizing physical performance: aerobic capacity; absolute aerobic power; anaerobic alactic performance; anaerobic glycolytic performance; relative aerobic power. The identified factors are associated with zones of relative power. It has been established that during puberty, changes in indicators combined into different factors occur non-linearly and non-simultaneously. The results of the study show that subjects of the same age with stages II, III and IV of puberty differ in the level of key bioenergetic performance criteria. Transition to higher stages of puberty is accompanied with progressive dynamics of most indicators associated with factors of anaerobic performance, while indicators of aerobic power and capacity change in different directions, showing in some cases a tendency to temporarily decrease.Conclusion. It is advisable to use the results of the study when organizing various types of monitoring the functional state and regulation of aerobic and anaerobic physical activity in adolescents aged 13–14 years at different stages of puberty. The obtained materials can serve as a scientific basis for improving the physical education system in order to increase the functional capabilities of children’s bodies during the critical period of ontogenesis associated with pubertal development</p></trans-abstract><kwd-group xml:lang="ru"><kwd>факторный анализ</kwd><kwd>физическая работоспособность и мышечная энергетика</kwd><kwd>стадии полового созревания</kwd><kwd>мальчики-подростки</kwd></kwd-group><kwd-group xml:lang="en"><kwd>factor analysis</kwd><kwd>physical performance and muscle energy</kwd><kwd>stages of puberty</kwd><kwd>adolescent boys</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Tonson A, Ratel S, Le Fur Y, Vilmen C, Cozzone PJ, Bendahan D. Muscle energetics changes throughout maturation: A quantitative 31P-MRS analysis. 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