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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">Ekologiya cheloveka (Human Ecology)</journal-id><journal-title-group><journal-title xml:lang="en">Ekologiya cheloveka (Human Ecology)</journal-title><trans-title-group xml:lang="ru"><trans-title>Экология человека</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1728-0869</issn><issn publication-format="electronic">2949-1444</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">52799</article-id><article-id pub-id-type="doi">10.33396/1728-0869-2020-11-27-31</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</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 problem of statistical stability of parameters of the cardiovascular system</article-title><trans-title-group xml:lang="ru"><trans-title>Проблема статистической устойчивости параметров кардиоинтервалов сердечно-сосудистой системы</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Eskov</surname><given-names>V. V.</given-names></name><name xml:lang="ru"><surname>Еськов</surname><given-names>Валерий Валериевич</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат медицинских наук</p></bio><email>firing.squad@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Orlov</surname><given-names>E. V.</given-names></name><name xml:lang="ru"><surname>Орлов</surname><given-names>Евгений Владимирович</given-names></name></name-alternatives><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bashkatova</surname><given-names>Yu. V.</given-names></name><name xml:lang="ru"><surname>Башкатова</surname><given-names>Юлия Владимировна</given-names></name></name-alternatives><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Melnikova</surname><given-names>E. G.</given-names></name><name xml:lang="ru"><surname>Мельникова</surname><given-names>Екатерина Геннадьевна</given-names></name></name-alternatives><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Federal Science Center Scientific-research Institute for System Studies of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">ФГУ «ФНЦ Научно-исследовательский институт системных исследований Российской академии наук»</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Samara State Medical University</institution></aff><aff><institution xml:lang="ru">ГБОУ ВО «Самарский государственный медицинский университет» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2020-11-15" publication-format="electronic"><day>15</day><month>11</month><year>2020</year></pub-date><volume>27</volume><issue>11</issue><issue-title xml:lang="en">NO11 (2020)</issue-title><issue-title xml:lang="ru">№11 (2020)</issue-title><fpage>27</fpage><lpage>31</lpage><history><date date-type="received" iso-8601-date="2020-12-01"><day>01</day><month>12</month><year>2020</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2020, Eskov V.V., Orlov E.V., Bashkatova Y.V., Melnikova E.G.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2020, Еськов В.В., Орлов Е.В., Башкатова Ю.В., Мельникова Е.Г.</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="en">Eskov V.V., Orlov E.V., Bashkatova Y.V., Melnikova E.G.</copyright-holder><copyright-holder xml:lang="ru">Еськов В.В., Орлов Е.В., Башкатова Ю.В., Мельникова Е.Г.</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-nd/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://hum-ecol.ru/1728-0869/article/view/52799">https://hum-ecol.ru/1728-0869/article/view/52799</self-uri><abstract xml:lang="en"><p>One of the main problems in the theory of homeostasis and the theory of functional systems of the human body is the problem of choosing standards. It turned out that the statistics poorly diagnose the norm (standard) of function of the human body. The aim of the study was to assess the possibility of using a new quantitative criteria - the area of the pseudoattractors (Eskov's quasiattractors) as standard (physiological norm) parameters. Methods. In a group of 15 women (mean age  = 28 ± 2,3 years, who have been living in the North of the Russian Federation in Ugra for more than 15 years), cardiointerval samples were recorded (300 cardiointervals per sample) 225 times for each test subject. As a result, we calculated 15 matrices of pairwise comparisons of samples. A total of 225 matrices for all 15 subjects and 225 areas of S pseudoattractors for each subject were created. Area S was found from the formula S = Δx1 х Δх2, where Ax1 is the range for cardio intervals, and Δx2 is the range for Δx1. Results. All 225 matrices for 15 subjects showed showed a substantial variability in samples of cardiointervals. However, S areas showed statistical stability for each of 15 subjects. Conclusions: further application of statistics in the calculation of cardio intervals is problematic due to the statistical instability of the samples, therefore we propose to use areas of pseudoattractors to assess the physiological norm.</p></abstract><trans-abstract xml:lang="ru"><p>Одной из главных проблем в теории гомеостаза и теории функциональных систем организма человека является проблема выбора стандартов. При этом оказалось, что статистика слабо диагностирует норму (стандарт) в состоянии функций организма. Цель исследования - доказательство возможностей применения в качестве стандарта (физиологической нормы) параметров организма новых количественных критериев - площади псевдоаттрактора (квазиаттрактора Еськова). Методы. В группе из 15 женщин (средний возраст  = (28 ± 2,3) года, которые более 15 лет проживают на Севере Российской Федерации в Югре) по 225 раз (для каждой испытуемой) регистрировали выборки кардиоинтервалов (по 300 кардиоинтервалов в каждой такой выборке). В итоге рассчитывали по 15 матриц парных сравнений выборок для каждой испытуемой (всего 225 матриц для всех 15 испытуемых) и по 225 площадей S псевдоаттракторов для каждой испытуемой. Площадь S находили из формулы S = Δx1 х Δх2, где Δx1 - вариационный размах для кардиоинтервалов, а Δх2 - вариационный размах для Δх1. Результаты. Все 225 матриц для 15 испытуемых показали отсутствие устойчивости выборок кардиоинтервалов. Однако площади S показали статистическую устойчивость для каждой из 15 испытуемых. Выводы: дальнейшее применение статистики в расчетах кардиоинтервалов представляется проблемным из-за статистической неустойчивости выборок, и предлагается для оценки физиологической нормы использовать площади псевдоаттракторов.</p></trans-abstract><kwd-group xml:lang="en"><kwd>cardiointervals</kwd><kwd>statistical stability</kwd><kwd>paired comparison matrices</kwd><kwd>pseudoattractors</kwd><kwd>Eskov-Zinchenko effect</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>кардиоинтервалы</kwd><kwd>статистическая устойчивость</kwd><kwd>матрицы парных сравнений</kwd><kwd>псевдоаттракторы</kwd><kwd>эффект Еськова - Зинченко</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Филатова О. Е., Гудков А. Б., Еськов В. В., Чемпалова Л. С. Понятие однородности группы в экологии человека // Экология человека. 2020. № 2. С. 40-44. Filatova O. E., Gudkov A. B., Eskov V. V., Chempalova L. S. 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