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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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">Medicine and Biotechnology</journal-id><journal-title-group><journal-title xml:lang="en">Medicine and Biotechnology</journal-title><trans-title-group xml:lang="ru"><trans-title>Медицина и биотехнологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">3034-6231</issn><issn publication-format="electronic">3034-6258</issn><publisher><publisher-name xml:lang="en">National Research Mordovia State University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">345277</article-id><article-id pub-id-type="doi">10.15507/3034-6231.002.202601.047-057</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Internal medicine</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Внутренние болезни</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Assessment of Heart Rate and Cardiac Repolarization Parameters in the Prone Position in Young Healthy Men</article-title><trans-title-group xml:lang="ru"><trans-title>Оценка частоты сердечных сокращений и показателей реполяризации сердца в прон-позиции у молодых здоровых мужчин</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-5855-6487</contrib-id><name-alternatives><name xml:lang="ru"><surname>Паршукова</surname><given-names>Елизавета Александровна</given-names></name><name xml:lang="en"><surname>Parshukova</surname><given-names>Elizaveta A.</given-names></name></name-alternatives><bio xml:lang="en"><p>Resident, Institute of Medicine; Pediatrician</p></bio><bio xml:lang="ru"><p>ординатор Медицинского института; врач-педиатр участковый </p></bio><email>liza23psh@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0001-2235-2491</contrib-id><name-alternatives><name xml:lang="ru"><surname>Оскаленко</surname><given-names>Анастасия Михайловна</given-names></name><name xml:lang="en"><surname>Oskalenko</surname><given-names>Anastasia M.</given-names></name></name-alternatives><bio xml:lang="en"><p>Pediatrician</p></bio><bio xml:lang="ru"><p>врач-педиатр участковый </p></bio><email>nastya.oskalenko@bk.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7297-3395</contrib-id><name-alternatives><name xml:lang="en"><surname>Ignatova</surname><given-names>Alexandra N.</given-names></name><name xml:lang="ru"><surname>Игнатова</surname><given-names>Александра Николаевна</given-names></name></name-alternatives><bio xml:lang="en"><p>Undergraduate Student, Institute of Medicine</p></bio><bio xml:lang="ru"><p>студент Медицинского института </p></bio><email>sandraign@mail.ru</email></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8195-8111</contrib-id><contrib-id contrib-id-type="scopus">341116</contrib-id><contrib-id contrib-id-type="spin">1597-8390</contrib-id><name-alternatives><name xml:lang="ru"><surname>Кораблева</surname><given-names>Наталья Николаевна</given-names></name><name xml:lang="en"><surname>Korableva</surname><given-names>Natalya N.</given-names></name></name-alternatives><bio xml:lang="en"><p>Dr.Sci. (Med.), Associate Professor, Head of the Department of Pediatrics, Institute of Medicine</p></bio><bio xml:lang="ru"><p>доктор медицинских наук, доцент, заведующий кафедрой педиатрии Медицинского института</p></bio><email>kemcard@yandex.ru</email></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="ru">Сыктывкарский государственный университет имени Питирима Сорокина</institution></aff><aff><institution xml:lang="en">Pitirim Sorokin Syktyvkar State University</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="ru">Сыктывкарская детская поликлиника № 3</institution></aff><aff><institution xml:lang="en">Syktyvkar Children’s Polyclinic No. 3</institution></aff></aff-alternatives><content-language>ru</content-language><pub-date date-type="pub" iso-8601-date="2026-03-31" publication-format="electronic"><day>31</day><month>03</month><year>2026</year></pub-date><pub-date date-type="collection"><year>2026</year></pub-date><volume>2</volume><issue>1</issue><issue-title xml:lang="ru"/><fpage>47</fpage><lpage>57</lpage><history><date date-type="received" iso-8601-date="2025-10-24"><day>24</day><month>10</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2026-01-23"><day>23</day><month>01</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, Parshukova E.A., Oskalenko A.M., Ignatova A.N., Korableva N.N.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, Паршукова Е.А., Оскаленко А.М., Игнатова А.Н., Кораблева Н.Н.</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="en">Parshukova E.A., Oskalenko A.M., Ignatova A.N., Korableva N.N.</copyright-holder><copyright-holder xml:lang="ru">Паршукова Е.А., Оскаленко А.М., Игнатова А.Н., Кораблева Н.Н.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://medbiosci.ru/MedBiotech/article/view/345277">https://medbiosci.ru/MedBiotech/article/view/345277</self-uri><abstract xml:lang="en"><p><bold>Introduction. </bold>The prone position is widely used in modern medicine, ranging from surgical procedures to the management of patients with acute respiratory distress syndrome. The COVID-19 pandemic highlighted its clinical significance, demonstrating improvements in oxygenation and hemodynamics in patients. It is known that the prone position affects the electrical activity of the heart, causing changes in the axis and morphology of the QRS complex, as well as in repolarization parameters. These featuresmay mimic ischemic changes on the electrocardiogram. Contemporary studies also indicate a possible prolongation of the QT interval and its prognostic significance. <italic>The aim of the study</italic> is to assess the effect of body position (prone position) on heart rate and repolarization parameters according to electrocardiographic data in young healthy men.</p> <p><bold>Materials and methods.</bold> A cross-sectional study was conducted at the Research Laboratory “Problems of Hypoxia” of Pitirim Sorokin Syktyvkar State University. The study included 18 young men without chronic or acute diseases. Electrocardiogram recordings were obtained in standard lead II in the supine position and in the prone position using the Poly-Spectrum hardware–software complex. The heart rate, QT interval, corrected QT interval (QTc), Tp–e interval, and the Tp–e/QT and Tp–e/QTc ratios were analyzed.Results. A statistically significant increase in heart rate was observed in the prone position, averaging 21.5% (12.8%; 31.0%). The QT interval duration in the prone position significantly decreased compared with the supine position, whereas QTc significantly increased. QT dispersion, Tp-e, as well as the Tp-e/QT and Tp-e/QTc ratios did not demonstrate significant changes.<bold>Discussion and conclusion.</bold> The prone position affects the electrophysiological parameters of the heart, leading to an increase in heart rate and the QTc interval while not significantly altering indices of repolarization dispersion, which may be relevant for the interpretation of the electrocardiogram in clinical practice.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение. </bold>Прон-позиция широко применяется в современной медицине – от оперативных вмешательств до терапии пациентов с острым респираторным дистресс-синдромом. Пандемия COVID-19 подчеркнула ее клиническую значимость, показав улучшение оксигенации и гемодинамики у пациентов. Известно, что положение на животе влияет на электрическую активность сердца, вызывая изменения оси и морфологии комплекса QRS, а также показатели реполяризации. Эти особенности могут имитировать ишемические изменения на электрокардиограмме. Современные исследования указывают на возможное удлинение интервала QT и его прогностическую значимость. <italic>Цель исследования –</italic> оценка влияния положения тела (прон-позиции) на частоту сердечных сокращений и показатели реполяризации по данным электрокардиограммы у молодых здоровых мужчин.<bold>Материалы и методы. </bold>Проведено одномоментное исследование на базе научно-исследовательской лаборатории «Проблемы гипоксии» Сыктывкарского государственного университета имени Питирима Сорокина. В исследование включены 18 молодых мужчин без хронических и острых заболеваний. Регистрация электрокардиограммы проводилась во II стандартном отведении в положении лежа на спине и в прон-позиции с использованием аппаратно-программного комплекса «Поли-Спектр». Анализировались частота сердечных сокращений, интервал QT, корригированный QT (QTc), интервал Tp-e, отношения Tp-e/QT и Tp-e/QTc.<bold>Результаты исследования. </bold>Выявлено статистически значимое увеличение частоты сердечных сокращений в прон-позиции в среднем на 21,5 % (12,8 %; 31,0 %). Длительность интервала QT в прон-позиции значимо уменьшалась по сравнению с положением на спине, тогда как QTc значимо увеличивалась. Дисперсия QT, Tp-e, а также соотношения Tp-e/QT и Tp-e/QTc не продемонстрировали значимых изменений.</p> <p><bold>Обсуждение и заключение. </bold>Прон-позиция оказывает влияние на электрофизиологические параметры сердца, вызывая увеличение частоты сердечных сокращений и интервала QTc, значимо не изменяя показатели дисперсии реполяризации, что может иметь значение при интерпретации электрокардиограммы в клинической практике.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>прон-позиция</kwd><kwd>электрокардиограмма</kwd><kwd>частота сердечных сокращений</kwd><kwd>интервал QT</kwd><kwd>интервал QTc</kwd><kwd>интервал Tp-e</kwd><kwd>отношение Tp-e/QT</kwd><kwd>отношение Tp-e/QTc, реполяризация</kwd></kwd-group><kwd-group xml:lang="en"><kwd>prone position</kwd><kwd>electrocardiogram</kwd><kwd>heart rate</kwd><kwd>QT interval</kwd><kwd>corrected QT interval</kwd><kwd>Tp-e interval</kwd><kwd>Tp-e/QT ratio</kwd><kwd>Tp-e/QTc ratio</kwd><kwd>repolarization</kwd></kwd-group><funding-group/></article-meta><fn-group><fn xml:lang="ru"><p/></fn></fn-group></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Coppo A., Bellani G., Winterton D., Di Pierro M., Soria A., Faverio P., et al. 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