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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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">RUDN Journal of Ecology and Life Safety</journal-id><journal-title-group><journal-title xml:lang="en">RUDN Journal of Ecology and Life Safety</journal-title><trans-title-group xml:lang="ru"><trans-title>Вестник Российского университета дружбы народов. Серия: Экология и безопасность жизнедеятельности</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2313-2310</issn><issn publication-format="electronic">2408-8919</issn><publisher><publisher-name xml:lang="en">Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">27354</article-id><article-id pub-id-type="doi">10.22363/2313-2310-2020-28-4-408-416</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Human ecology</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Экология человека</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">The impact of magnesium on psycho-emotional stress and functional activity of the cardiovascular system in students from African countries</article-title><trans-title-group xml:lang="ru"><trans-title>Влияние магния на психоэмоциональное напряжение и функциональную активность сердечно-сосудистой системы у студентов из стран Африки</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5125-5116</contrib-id><name-alternatives><name xml:lang="en"><surname>Kirichuk</surname><given-names>Anatoly A.</given-names></name><name xml:lang="ru"><surname>Киричук</surname><given-names>Анатолий Александрович</given-names></name></name-alternatives><bio xml:lang="en"><p>Candidate of Agricultural Sciences, Associate Professor, Department of Forensic Ecology with the Course of Human Ecology</p></bio><bio xml:lang="ru"><p>кандидат сельскохозяйственных наук, доцент, кафедра судебной экологии с курсом экологии человека</p></bio><email>kirichuk-aa@rudn.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8591-3746</contrib-id><name-alternatives><name xml:lang="en"><surname>Klimenko</surname><given-names>Anna S.</given-names></name><name xml:lang="ru"><surname>Клименко</surname><given-names>Анна Сергеевна</given-names></name></name-alternatives><bio xml:lang="en"><p>Candidate of Medical Sciences, Associate Professor, Director, Outpatient Polyclinic Center, RUDN Clinical and Diagnostic Center</p></bio><bio xml:lang="ru"><p>кандидат медицинских наук, доцент, директор, Амбулаторно-поликлинический центр, Клинико-диагностический центр</p></bio><email>klimenko-as@rudn.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0934-4315</contrib-id><name-alternatives><name xml:lang="en"><surname>Lobanova</surname><given-names>Yulia N.</given-names></name><name xml:lang="ru"><surname>Лобанова</surname><given-names>Юлия Николаевна</given-names></name></name-alternatives><bio xml:lang="en"><p>Candidate of Biological Sciences, Associate Professor, Department of Medical Elementology</p></bio><bio xml:lang="ru"><p>кандидат биологических наук, доцент, кафедра медицинской элементологии</p></bio><email>lobanova_ju@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Pobilat</surname><given-names>Anna E.</given-names></name><name xml:lang="ru"><surname>Побилат</surname><given-names>Анна Евгеньевна</given-names></name></name-alternatives><bio xml:lang="en"><p>Candidate of Medical Sciences, senior lecturer, Department of Medical Elementology</p></bio><bio xml:lang="ru"><p>кандидат медицинских наук, старший преподаватель, кафедра медицинской элементологии</p></bio><email>pobiiat_anna@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4785-2668</contrib-id><name-alternatives><name xml:lang="en"><surname>Mazilina</surname><given-names>Aksana N.</given-names></name><name xml:lang="ru"><surname>Мазилина</surname><given-names>Аксана Николаевна</given-names></name></name-alternatives><bio xml:lang="en"><p>Candidate of Medical Sciences, senior lecturer, Department of Medical Elementology</p></bio><bio xml:lang="ru"><p>кандидат медицинских наук, старший преподаватель, кафедра медицинской элементологии</p></bio><email>gman65@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Koroleva</surname><given-names>Anastasia A.</given-names></name><name xml:lang="ru"><surname>Королева</surname><given-names>Анастасия Александровна</given-names></name></name-alternatives><bio xml:lang="en"><p>therapist</p></bio><bio xml:lang="ru"><p>терапевт, амбулаторно-поликлиническое отделение</p></bio><email>koroleva@drskalny.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Peoples’ Friendship University of Russia (RUDN University)</institution></aff><aff><institution xml:lang="ru">Российский университет дружбы народов</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Center for Biotic Medicine</institution></aff><aff><institution xml:lang="ru">Центр биотической медицины</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2020-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2020</year></pub-date><volume>28</volume><issue>4</issue><issue-title xml:lang="en">VOL 28, NO4 (2020)</issue-title><issue-title xml:lang="ru">ТОМ 28, №4 (2020)</issue-title><fpage>408</fpage><lpage>416</lpage><history><date date-type="received" iso-8601-date="2021-09-04"><day>04</day><month>09</month><year>2021</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2020, Kirichuk A.A., Klimenko A.S., Lobanova Y.N., Pobilat A.E., Mazilina A.N., Koroleva A.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2020, Киричук А.А., Клименко А.С., Лобанова Ю.Н., Побилат А.Е., Мазилина А.Н., Королева А.А.</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="en">Kirichuk A.A., Klimenko A.S., Lobanova Y.N., Pobilat A.E., Mazilina A.N., Koroleva A.A.</copyright-holder><copyright-holder xml:lang="ru">Киричук А.А., Клименко А.С., Лобанова Ю.Н., Побилат А.Е., Мазилина А.Н., Королева А.А.</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-nc/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/ecology/article/view/27354">https://journals.rudn.ru/ecology/article/view/27354</self-uri><abstract xml:lang="en"><p style="text-align: justify;">The objective of the study is investigation of the impact of magnesium on psycho-emotional stress and functional activity of the cardiovascular system in foreign male students of African origin. A total of 33 male first course students were involved in the study. The examinees were supplemented with 150 mg/day of magnesium. Evaluation of serum and urinary Mg levels was performed using inductively-coupled plasma mass-spectrometry, whereas functional activity of the cardiovascular system and psycho-emotional stress were assessed using Angioscan-01 diagnostic complex both before and after a course of magnesium supplementation. It has been demonstrated that magnesium supplementation resulted in a significant 3% increase in serum Mg levels as compared to baseline. The observed increase in circulating magnesium levels was associated with a significant 26% decrease in stress index, whereas arterial stiffness index significantly reduced by 3%. A significant increase in absolute systole duration and time from the start of the pulse wave to a maximum of the early systolic wave was also observed. The results of the study demonstrate a significant decrease in stress index and arterial stiffness in response to magnesium intake, being in agreement with the existing data on protective effects of magnesium. Therefore, monitoring of magnesium supply and its improvement may be considered as a valuable tool supporting somatic and psychic health of students thus improving their academic performance.</p></abstract><trans-abstract xml:lang="ru"><p style="text-align: justify;">Изучено влияние дополнительного поступления в организм магния на психоэмоциональное напряжение и функциональную активность сердечно-сосудистой системы у студентов из стран Африки. В исследовании приняли участие 33 студента мужского пола из стран экваториальной Африки, обучающихся на первом курсе Российского университета дружбы народов. В течение 30 дней они получали дополнительно 150 мг магния в сутки. До и после курса приема магния проводилась оценка функциональной активности сердечно-сосудистой системы и психоэмоционального напряжения с использованием диагностического комплекса АнгиоСкан-01 (АнгиоСкан Электроникс, Россия), а также уровня магния в сыворотке крови и моче обследуемых методом масс-спектрометрии с индуктивно-связанной плазмой (ИСП-МС). Установлено, что месячный курс приема магния приводил к достоверному увеличению концентрации магния в сыворотке крови на 3 % относительно исходных значений. Увеличение поступления магния в течение месяца сопровождалось достоверным снижением величины индекса стресса Баевского по сравнению с исходными показателями. По окончании курса приема магния также отмечалось достоверное снижение индекса жесткости крупных сосудов, таких как аорта и ее ветви. Выявлено достоверное увеличение абсолютной длительности систолы и времени от начала пульсовой волны до максимума ранней систолической волны.</p></trans-abstract><kwd-group xml:lang="en"><kwd>magnesium</kwd><kwd>stress</kwd><kwd>arterial stiffness</kwd><kwd>functional activity</kwd><kwd>foreign students</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>магний</kwd><kwd>стресс</kwd><kwd>жесткость артерий</kwd><kwd>функциональная активность</kwd><kwd>студенты-иностранцы</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Kuryasev IA. Stress and stress resistance of students. Bulletin of the Peoples’ Friendship University of Russia. Series: Ecology and Life Safety. 2013;(5):64-67. (In Russ.)</mixed-citation><mixed-citation xml:lang="ru">Курясев И.А. Стресс и стрессоустойчивость студентов // Вестник Российского университета дружбы народов. 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