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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">pimi</journal-id><journal-title-group><journal-title xml:lang="ru">Приборы и методы измерений</journal-title><trans-title-group xml:lang="en"><trans-title>Devices and Methods of Measurements</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2220-9506</issn><issn pub-type="epub">2414-0473</issn><publisher><publisher-name>BNTU</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21122/2220-9506-2025-16-2-168-174</article-id><article-id custom-type="elpub" pub-id-type="custom">pimi-963</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>Методы измерений, контроля, диагностики</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Methods of measurements, monitoring, diagnostics</subject></subj-group></article-categories><title-group><article-title>Взаимосвязь оптимального значения частоты электростимуляции, величины максимума фазового сдвига и усилия, развиваемого мышцей</article-title><trans-title-group xml:lang="en"><trans-title>Relationship between the Electrical Stimulation Frequency Optimal Value and the Magnitude of the Maximum Phase Shift, and the Force Developed by the Muscle</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Осипов</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Osipov</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>П. Бровки, 6, г. Минск 220013</p></bio><bio xml:lang="en"><p>P. Brovki str., 6, Minsk 220013</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хазановский</surname><given-names>И. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Khazanovsky</surname><given-names>I. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Адрес для переписки:Хазановский И.О. -ООО «Горнэлектроникс»,ул. Козлова, 50 В, г. Минск 220088, Беларусь e-mail: khaz_igor@yahoo.com</p></bio><bio xml:lang="en"><p>Address for correspondence: Khazanovsky I.O.  Gornelektronics LLC,Kozlova str. 50 B, Minsk 220088, Belarus, e-mail: khaz_igor@yahoo.com</p></bio><email xlink:type="simple">khaz_igor@yahoo.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пацеев</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Paceev</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ул. Макаёнка, 17, г. Минск 220114</p></bio><bio xml:lang="en"><p>Makayonka str., 17, Minsk 220114</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пацеев</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Paceev</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ул. Игнатенко, 8, г. Минск 220035</p></bio><bio xml:lang="en"><p>Ignatenko str., 8, Minsk 220035</p></bio><xref ref-type="aff" rid="aff-4"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский государственный университет информатики и радиоэлектроники</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>1Belarusian State University of Informatics and Radioelectronics</institution><country>Belarus</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Горнэлектроникс ООО</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Gornelektronics LLC</institution><country>Belarus</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Республиканский центр медреабилитации и бальнеолечения</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Republican Center for Medical Rehabilitation and Balneotherapy</institution><country>Belarus</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Клиника «Мерси»</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Clinic "Mercy" LLC</institution><country>Belarus</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>02</day><month>07</month><year>2025</year></pub-date><volume>16</volume><issue>2</issue><fpage>168</fpage><lpage>174</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Осипов А.Н., Хазановский И.О., Пацеев А.В., Пацеев С.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Осипов А.Н., Хазановский И.О., Пацеев А.В., Пацеев С.В.</copyright-holder><copyright-holder xml:lang="en">Osipov A.N., Khazanovsky I.O., Paceev A.V., Paceev S.V.</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://pimi.bntu.by/jour/article/view/963">https://pimi.bntu.by/jour/article/view/963</self-uri><abstract><p>Важным моментом в процессе восстановительного лечения заболеваний нервно-мышечного аппарата является электростимуляция. Выбор частотно-временных параметров сигнала и его согласование с электрическими параметрами биологических тканей является одним из основных факторов в практике электростимуляции. Целью данной работы являлась оптимизация параметров электрического воздействия в соответствии с функциональным состоянием мышц. Исследования проводились на двуглавой мышце плеча верхней конечности испытуемого и включали исследование зависимости усилия, развиваемого мышцей, от амплитуды напряжения стимулирующего сигнала и исследование фазочастотной характеристики межэлектродного импеданса двуглавой мышцы плеча верхней конечности испытуемых. Определена взаимосвязь оптимального значения частоты электростимуляции, вызывающей максимальное усилие мышцы, и величины фазового сдвига фазочастотной характеристики тканей. Изучена зависимость усилия, развиваемого мышцей при электростимуляции, от величины амплитуды стимулирующего сигнала при различных значениях частоты электростимуляции. Установлено, что при увеличении амплитуды стимулирующего сигнала увеличивается частота экстремума фазочастотной характеристики биоткани, а соответственно и увеличивается частота электростимуляции, вызывающая максимальное усилие мышц. Результаты работы могут быть использованы при проектировании систем электростимуляции опорно-двигательного аппарата с обратной связью.</p></abstract><trans-abstract xml:lang="en"><p>Electrical stimulation restorative treatment’s process of neuromuscular system’s diseases very important. Choice of the signal frequency-time parameters and its coordination with the biological tissues electrical parameters one of the main factors in the practice of electrical stimulation. The purpose of this article was to optimize the electrical action parameters in accordance with the muscles’s functional state. The studies were conducted on the biceps brachii of the upper limb of the subject and included: study of dependence of the effort developed by the muscle on the amplitude of the stimulating signal’s voltage and study of the interelectrode impedance phase-frequency characteristic of the upper limb biceps brachii of the subjects. As a result, relationship between the optimal value of the electrical stimulation frequency causing the maximum effort of the muscle and the magnitude of the phase shift of the phase-frequency characteristic of the tissues was determined. Dependence of the effort developed by the muscle during electrical stimulation on the amplitude of the stimulating signal magnitude at different values of electrical stimulation frequency was studied. It was established that with an increase of the stimulating signal amplitude, frequency of the phase-frequency characteristic’s extremum of the biotissue increases and accordingly the frequency of electrical stimulation that causes maximum muscle effort increases. Results of the work can be used in the design of electrical stimulation systems for musculoskeletal system with feedback.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>частота электростимуляции</kwd><kwd>амплитуда стимулирующего сигнала</kwd><kwd>величина фазового сдвига</kwd><kwd>фазочастотная характеристика биоткани</kwd></kwd-group><kwd-group xml:lang="en"><kwd>electrical stimulation frequency</kwd><kwd>stimulation signal amplitude</kwd><kwd>phase shift magnitude</kwd><kwd>phase-frequency characteristic of biological tissue</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">Гурьянова У.А. 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