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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 Medicine</journal-id><journal-title-group><journal-title xml:lang="en">RUDN Journal of Medicine</journal-title><trans-title-group xml:lang="ru"><trans-title>Вестник Российского университета дружбы народов. Серия: Медицина</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2313-0245</issn><issn publication-format="electronic">2313-0261</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">22799</article-id><article-id pub-id-type="doi">10.22363/2313-0245-2019-23-4-390-396</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>BIOLOGY. EXPERIMENTAL PHYSIOLOGY</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>БИОЛОГИЯ. ЭКСПЕРИМЕНТАЛЬНАЯ ФИЗИОЛОГИЯ</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">Effect of Long-Term Electrical Spinal Cord Stimulation on Expression of Non-Reciprocal Inhibition α-Motoneurons of Human Skeletal Muscles</article-title><trans-title-group xml:lang="ru"><trans-title>Эффект длительной электрической стимуляции спинного мозга на проявления нереципрокного торможения α-мотонейронов скелетных мышц человека</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Roshchina</surname><given-names>L. V.</given-names></name><name xml:lang="ru"><surname>Рощина</surname><given-names>Л. В.</given-names></name></name-alternatives><email>ljudaroschina@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gladchenko</surname><given-names>D. A.</given-names></name><name xml:lang="ru"><surname>Гладченко</surname><given-names>Д. А.</given-names></name></name-alternatives><email>ljudaroschina@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Pivovarova</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Пивоварова</surname><given-names>Е. А.</given-names></name></name-alternatives><email>ljudaroschina@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Chelnokov</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Челноков</surname><given-names>А. А.</given-names></name></name-alternatives><email>ljudaroschina@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Velikie Luki State Academy of Physical Education and Sports</institution></aff><aff><institution xml:lang="ru">Великолукская государственная академия физической культуры и спорта</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2019-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2019</year></pub-date><volume>23</volume><issue>4</issue><issue-title xml:lang="en">VOL 23, NO4 (2019)</issue-title><issue-title xml:lang="ru">ТОМ 23, №4 (2019)</issue-title><fpage>390</fpage><lpage>396</lpage><history><date date-type="received" iso-8601-date="2020-02-03"><day>03</day><month>02</month><year>2020</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2019, Roshchina L.V., Gladchenko D.A., Pivovarova E.A., Chelnokov A.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2019, Рощина Л.В., Гладченко Д.А., Пивоварова Е.А., Челноков А.А.</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="en">Roshchina L.V., Gladchenko D.A., Pivovarova E.A., Chelnokov A.A.</copyright-holder><copyright-holder xml:lang="ru">Рощина Л.В., Гладченко Д.А., Пивоварова Е.А., Челноков 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/">http://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/medicine/article/view/22799">https://journals.rudn.ru/medicine/article/view/22799</self-uri><abstract xml:lang="en"><p>It is known, transcutaneous electrical spinal cord stimulation (tESCS) in the T11-T12 level of the thoracic vertebrae increases the power capabilities of the leg agonist muscles. One of the inhibition spinal mechanisms that protects skeletal muscles from excessive force is non-reciprocal inhibition. Taking into account the biological role of non-reciprocal inhibition, the aim of the study was to research the effect of long-term tESCS on expression of non-reciprocal inhibition of soleus muscle α-motorneurons in humans at rest and when holding a weak static force. Materials and methods: the study involved 22 healthy male subjects aged 27 to 35 years. Non-reciprocal inhibition of α-motorneurons was recorded during the 20-minute tESCS in the T11-T12 level of the thoracic vertebrae at rest, in combination with arbitrary muscular effort (5% of MVC) and after its impact. Results: TESCS at rest resulted in the weakening of non-reciprocal inhibition within 20 minutes of exposure and 10 minutes after the end of stimulation. TESCS in combination with arbitrary muscular effort in 5% of the MVC increases the activity of non-reciprocal inhibition for 20 minutes of stimulation and 10 minutes after its end. The proposed physiological mechanisms underlying the effect of long-term tESCS on expression of non-reciprocal inhibition are discussed.</p></abstract><trans-abstract xml:lang="ru"><p>Известно, что длительная чрескожная электрическая стимуляция спинного мозга (ЧЭССМ) в области T11-T12 грудных позвонков повышает силовые возможности мышц-агонистов голени. Одним из тормозных спинальных механизмов, предохраняющим скелетные мышцы от чрезмерного напряжения (силы), является нереципрокное торможение. Учитывая биологическую роль нереципрокного торможения, целью исследования являлось изучение влияния длительной ЧЭССМ на проявление нереципрокного торможения α-мотонейронов m. soleus человека в состоянии покоя и при удержании слабого по величине статического усилия. Материалы и методы: В исследовании приняли участие 22 здоровых испытуемых мужского пола в возрасте от 27 до 35 лет. Нереципрокное торможение α-мотонейронов регистрировалось на протяжении 20-минутной ЧЭССМ в области Т11-Т12 грудных позвонков в покое, в сочетании с произвольным мышечным усилием (5% от МПС) и после ее воздействия. Результаты: ЧЭССМ в покое приводила к ослаблению нереципрокного торможения в течение 20 минут воздействия и 10 минут после окончания стимуляции. ЧЭССМ в сочетании с произвольным мышечным напряжением в 5% от МПС усиливает активность нереципрокного торможения на протяжении 20 минут стимуляционного воздействия и 10 минут после его окончания. Обсуждаются предполагаемые физиологические механизмы, лежащие в основе влияния длительной ЧЭССМ на проявление нереципрокного торможения.</p></trans-abstract><kwd-group xml:lang="en"><kwd>transcutaneous electrical spinal cord stimulation (tESCS)</kwd><kwd>non-reciprocal inhibition</kwd><kwd>H-reflex</kwd><kwd>spinal cord</kwd><kwd>motorneurons</kwd><kwd>maximum voluntary contraction (MVC)</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>чрескожная электрическая стимуляция спинного мозга (ЧЭССМ)</kwd><kwd>нереципрокное торможение</kwd><kwd>Н-рефлекс</kwd><kwd>спинной мозг</kwd><kwd>мотонейроны</kwd><kwd>максимальное произвольное сокращение (МПС)</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">Fedorov SA, Gorodnichev RM, Chelnokov AA. The effect of prolonged electrical stimulation of the spinal cord on the strength capabilities of skeletal muscles. 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