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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.2022-7.3.18</article-id><article-id custom-type="elpub" pub-id-type="custom">actabiomedica-3564</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>МОРФОЛОГИЯ, ФИЗИОЛОГИЯ И ПАТОФИЗИОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MORPHOLOGY, PHYSIOLOGY AND PATHOPHYSIOLOGY</subject></subj-group></article-categories><title-group><article-title>Вариабельность сердечного ритма и уровень кортизола у детей школьного возраста при разной когнитивной нагрузке</article-title><trans-title-group xml:lang="en"><trans-title>Heart rate variability and cortisol levels in school-age children with different cognitive tests</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7387-9998</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Догадкина</surname><given-names>С. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Dogadkina</surname><given-names>S. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p> кандидат биологических наук, старший научный сотрудник, лаборатория комплексных исследований процессов адаптации</p><p> 119121, г. Москва, ул. Погодинская, 8., корп. 2, Россия </p></bio><bio xml:lang="en"><p> Cand. Sc. (Biol.), Senior Research Officer at the Laboratory of Complex Studies of Adaptation Processes</p><p>Pogodinskaya str. 8, build. 2, Moscow 119121, Russian Federation </p></bio><email xlink:type="simple">almanac@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/0000-0001-7430-4849</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ермакова</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ermakova</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p> кандидат биологических наук, старший научный сотрудник, лаборатория комплексных исследований процессов адаптации</p><p> 119121, г. Москва, ул. Погодинская, 8., корп. 2, Россия</p></bio><bio xml:lang="en"><p> Cand. Sc. (Biol.), Senior Research Officer at the Laboratory of Complex Studies of Adaptation Processes </p><p>Pogodinskaya str. 8, build. 2, Moscow 119121, Russian Federation </p></bio><email xlink:type="simple">ermek61@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/0000-0002-0197-3379</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Адамовская</surname><given-names>О. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Adamovskaya</surname><given-names>O. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p> кандидат биологических наук, старший научный сотрудник, лаборатория комплексных исследований процессов адаптации</p><p> 119121, г. Москва, ул. Погодинская, 8., корп. 2, Россия</p></bio><bio xml:lang="en"><p> Cand. Sc. (Biol.), Senior Research Officer at the Laboratory of Complex Studies of Adaptation Processes </p><p>Pogodinskaya str. 8, build. 2, Moscow 119121, Russian Federation </p></bio><email xlink:type="simple">krysyuk-19@yandex.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/0000-0002-3749-9891</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кмить</surname><given-names>Г. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kmit</surname><given-names>G. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p> кандидат биологических наук, старший научный сотрудник, лаборатория комплексных исследований процессов адаптации</p><p> 119121, г. Москва, ул. Погодинская, 8., корп. 2, Россия</p></bio><bio xml:lang="en"><p> Cand. Sc. (Biol.), Senior Research Officer at the Laboratory of Complex Studies of Adaptation Processes </p><p>Pogodinskaya str. 8, build. 2, Moscow 119121, Russian Federation </p></bio><email xlink:type="simple">galkmit@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/0000-0002-0363-2375</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рублева</surname><given-names>Л. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Rubleva</surname><given-names>L. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p> кандидат биологических наук, старший научный сотрудник, лаборатория комплексных исследований процессов адаптации</p><p> 119121, г. Москва, ул. Погодинская, 8., корп. 2, Россия</p></bio><bio xml:lang="en"><p> Cand. Sc. (Biol.), Senior Research Officer at the Laboratory of Complex Studies of Adaptation Processes </p><p>Pogodinskaya str. 8, build. 2, Moscow 119121, Russian Federation </p></bio><email xlink:type="simple">LariusR@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/0000-0002-6862-8115</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шарапов</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Sharapov</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p> доктор медицинских наук, заведующий лабораторией, лаборатория комплексных исследований процессов адаптации</p><p> 119121, г. Москва, ул. Погодинская, 8., корп. 2, Россия</p></bio><bio xml:lang="en"><p> Dr. Sc. (Med.), Head of the Laboratory of Complex Studies of Adaptation Processes </p><p>Pogodinskaya str. 8, build. 2, Moscow 119121, Russian Federation </p></bio><email xlink:type="simple">alim.sharapov@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБНУ «Институт возрастной физиологии Российской академии образования»</institution></aff><aff xml:lang="en"><institution>Institute of Development Physiology of the Russian Academy of Education </institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>06</day><month>07</month><year>2022</year></pub-date><volume>7</volume><issue>3</issue><fpage>169</fpage><lpage>179</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Догадкина С.Б., Ермакова И.В., Адамовская О.Н., Кмить Г.В., Рублева Л.В., Шарапов А.Н., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Догадкина С.Б., Ермакова И.В., Адамовская О.Н., Кмить Г.В., Рублева Л.В., Шарапов А.Н.</copyright-holder><copyright-holder xml:lang="en">Dogadkina S.B., Ermakova I.V., Adamovskaya O.N., Kmit G.V., Rubleva L.V., Sharapov A.N.</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/3564">https://www.actabiomedica.ru/jour/article/view/3564</self-uri><abstract><p>Актуальность. Актуальной задачей возрастной физиологии является изучение функционального состояния организма детей школьного возраста при когнитивной деятельности из-за большой учебной нагрузки и использования в образовательном процессе информационно-компьютерных технологий. Выявление особенностей реактивности организма обучающихся при выполнении когнитивной нагрузки разного вида, в том числе и на электронных устройствах, необходимо для организации школьной образовательной среды.Цель исследования. Оценить характер вегетативной, сердечно-сосудистой и гормональной реактивности при когнитивной нагрузке разного вида у детей школьного возраста.Материалы и методы. Методами анализа вариабельности сердечного ритма, электрокардиографии, тонометрии и иммуноферментного определения кортизола в слюне обследовано 117 детей школьного возраста при выполнении когнитивной нагрузки разного вида.Результаты. При выполнении школьниками когнитивной нагрузки происходит изменение показателей вариабельности сердечного ритма. Устный счёт вызывает рост симпатических влияний на сердечный ритм при снижении парасимпатической активности, а также сдвиг вагосимпатического баланса. Работа на электронных устройствах вызывает снижение общей плотности мощности спектра и увеличение показателя соотношения низкочастотных и высокочастотных колебаний за счёт снижения парасимпатической активности. Выявлено два типа реакции: I тип – повышение концентрации кортизолав слюне, повышение симпатических влияний на сердечный ритм с одновременным снижением парасимпатической активности (счёт), снижение общей мощности плотности спектра (ноутбук), уменьшение парасимпатической активности (планшет). II тип – понижение уровня гормона и снижение очень низкочастотных колебаний и парасимпатической активности независимо от вида предъявляемой нагрузки.Заключение. Полученные результаты свидетельствуют, что характер реактивности показателей сердечного ритма и стресс-гормона кортизола у обучающихся зависит не столько от того на каком электронном устройстве она выполняется, а от вида когнитивной нагрузки.</p></abstract><trans-abstract xml:lang="en"><p>Background. An urgent task of age-related physiology is to study the functional state of the body of school-age children in cognitive activity due to the large academic load and the use of information and computer technologies in the educational process to identify the characteristics of the reactivity of the body of students when performing cognitive load of various types, including on electronic devices, is necessary for the organization of the school educational environment.The aim. To assess the nature of vegetative, cardiovascular and hormonal reactivity in cognitive load of various types in school-age children.Materials and methods. By methods of heart rate variability analysis, electrocardiography, tonometry and enzyme immunoassay of cortisol in saliva, 117 school-age children were examined while performing cognitive load of various types.Results. There is a change in heart rate variability indicators while performing cognitive load. Oral counting causes an increase in sympathetic influences on the heart rate with a decrease in parasympathetic activity, as well as a shift in the vagosympathetic balance. Operation on the electronic devices causes a decrease in the total power density of the spectrum and an increase in the index of low-frequency and highfrequency vibrations ratio due to a decrease in parasympathetic activity. Two types of reaction were revealed: type I – an increase in the concentration of cortisol in saliva, an increase in sympathetic effects on Heart rate with a simultaneous decrease in parasympathetic activity (counting), a decrease in the total power of the spectrum density (laptop), a decrease in parasympathetic activity (tablet). Type II – a decrease in hormone levels and a decrease in very low-frequency vibrations and parasympathetic activity, regardless of the type of load presentedConclusion. The results obtained indicate that the nature of the reactivity of heart rate indicators and the stress hormone cortisol in students depends not so much on which electronic device it is performed on, but on the type of cognitive load.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>дети школьного возраста</kwd><kwd>когнитивная нагрузка</kwd><kwd>вариабельность сердечного ритма</kwd><kwd>кортизол</kwd></kwd-group><kwd-group xml:lang="en"><kwd>school-age children</kwd><kwd>cognitive test</kwd><kwd>cardiovascular system</kwd><kwd>heart rate variability</kwd><kwd>cortisol</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">Куликов В.Ю., Антропова Л.К., Арчибасова Е.А. Гендерные особенности спектральной мощности альфа-ритма и вариабельности ритма сердца при когнитивной нагрузке у здоровых студентов. 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