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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="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Russian Journal of Physiology</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Physiology</journal-title><trans-title-group xml:lang="ru"><trans-title>Российский физиологический журнал им. И.М. Сеченова</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0869-8139</issn><issn publication-format="electronic">2658-655X</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">651548</article-id><article-id pub-id-type="doi">10.31857/S0869813923070099</article-id><article-id pub-id-type="edn">XMVPMR</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>EXPERIMENTAL ARTICLES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ЭКСПЕРИМЕНТАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Decrease in Muscle Mass in Diet-Induced Visceral Obesity in Male Wistar Rats: Relationship with Hormonal and Metabolic Parameters</article-title><trans-title-group xml:lang="ru"><trans-title>Снижение мышечной массы при диет-индуцированном висцеральном ожирении у крыс-самцов линии Вистар: связь с гормонально-метаболическими показателями</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Mityukova</surname><given-names>T. A.</given-names></name><name xml:lang="ru"><surname>Митюкова</surname><given-names>Т. А.</given-names></name></name-alternatives><email>mityukovat@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Basalai</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Басалай</surname><given-names>А. А.</given-names></name></name-alternatives><email>anastasiya.basalay@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Chudilovskaya</surname><given-names>K. N.</given-names></name><name xml:lang="ru"><surname>Чудиловская</surname><given-names>Е. Н.</given-names></name></name-alternatives><email>anastasiya.basalay@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Poluliakh</surname><given-names>O. Y.</given-names></name><name xml:lang="ru"><surname>Полулях</surname><given-names>О. Е.</given-names></name></name-alternatives><email>anastasiya.basalay@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shcherbakov</surname><given-names>Ya. V.</given-names></name><name xml:lang="ru"><surname>Щербаков</surname><given-names>Я. В.</given-names></name></name-alternatives><email>anastasiya.basalay@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kastsiuchenko</surname><given-names>M. S.</given-names></name><name xml:lang="ru"><surname>Костюченко</surname><given-names>Н. С.</given-names></name></name-alternatives><email>anastasiya.basalay@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Institute of Physiology of the National Academy of Sciences of Belarus</institution></aff><aff><institution xml:lang="ru">Институт физиологии Национальной академии наук Беларуси</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-07-01" publication-format="electronic"><day>01</day><month>07</month><year>2023</year></pub-date><volume>109</volume><issue>7</issue><fpage>921</fpage><lpage>932</lpage><history><date date-type="received" iso-8601-date="2025-02-01"><day>01</day><month>02</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Т.А. Митюкова, А.А. Басалай, Е.Н. Чудиловская, О.Е. Полулях, Я.В. Щербаков, Н.С. Костюченко</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Т.А. Митюкова, А.А. Басалай, Е.Н. Чудиловская, О.Е. Полулях, Я.В. Щербаков, Н.С. Костюченко</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">Т.А. Митюкова, А.А. Басалай, Е.Н. Чудиловская, О.Е. Полулях, Я.В. Щербаков, Н.С. Костюченко</copyright-holder><copyright-holder xml:lang="ru">Т.А. Митюкова, А.А. Басалай, Е.Н. Чудиловская, О.Е. Полулях, Я.В. Щербаков, Н.С. Костюченко</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/0869-8139/article/view/651548">https://journals.eco-vector.com/0869-8139/article/view/651548</self-uri><abstract xml:lang="en"><p id="idm45181323787648">Decrease in muscle mass, as a rule, develops with the aging of the body, but in obesity the signs of decrease in mass and functional activity of the skeletal muscles are also registered, which requires experimental research. The aim of the work was to study the effect of diet-induced obesity and health variants of its correction on mass-metric and metabolic tissue parameters of musculus triceps surae in male Wistar rats. The experiments were carried out on sexually mature male Wistar rats and included the study of mass-metric, metabolic and hormonal indices characterizing the state of muscle tissue under the standard (Std, 16 weeks) and high-caloric diet (HCD, 16 weeks), during the transition from HCD to standard diet (HCD/StD, 8/8 weeks), when physical activity in the form of running on a treadmill was added (StD + running, HCD + running and HCD/StD + running, 8/8). Prolonged high-caloric diet led to the development of visceral obesity and decreased musculus triceps surae mass in male Wistar rats. Metabolic shifts were registered in the skeletal muscles during HCD, such as an increase in glucose, lactate, lactate dehydrogenase activity, and lipid peroxidation. Visceral obesity was accompanied by a decrease in serum testosterone content, but the concentration of the hormone in muscle tissue remained relatively stable. Application of moderate physical activity in HCD did not lead to correction of visceral fat mass, did not prevent decrease in muscle mass, but caused normalization of biochemical indices in muscle tissue and serum testosterone level. The most adequate correction of visceral obesity, muscle mass and biochemical indices in muscle tissue in male rats was achieved by switching from a high-caloric to a balanced diet regardless of physical activity. Thus, correction of diet-induced visceral obesity, muscle mass and associated metabolic shifts in male Wistar rats requires a transition to a balanced diet.</p></abstract><trans-abstract xml:lang="ru"><p id="idm45181323783968">Снижение мышечной массы, как правило, развивается при старении организма, однако при ожирении также регистрируются признаки снижения массы и функциональной активности скелетной мускулатуры, что требует экспериментальных исследований. Цель работы <bold>–</bold> изучить влияние диет-индуцированного ожирения и оздоровительных вариантов его коррекции на масс-метрические и метаболические показатели тканей трехглавых мышц голени у крыс-самцов линии Вистар. Опыты проводились на половозрелых крысах и включали изучение масс-метрических, метаболических и гормональных показателей, характеризующих состояние мышечной ткани при стандартной (СтД, 16 нед) и высококалорийной диетах (ВКД, 16 нед), при переходе от ВКД к стандартной диете (ВКД/СтД, 8/8 нед), при подключении физических нагрузок в виде бега на тредмиле (СтД + бег, ВКД + бег и ВКД/СтД + бег, 8/8). Длительная высококалорийная диета приводила к развитию висцерального ожирения и снижению массы трехглавой мышцы голени у исследуемых животных. При ВКД в скелетных мышцах регистрировались метаболические сдвиги – нарастание содержания глюкозы, лактата, активности лактатдегидрогеназы и перекисного окисления липидов. Висцеральное ожирение сопровождалось снижением содержания тестостерона в сыворотке крови, но при этом в мышечной ткани сохранялась относительно стабильная концентрации гормона. Применение умеренных физических нагрузок при ВКД не приводило к коррекции массы висцерального жира, не предупреждало снижения мышечной массы, но вызывало нормализацию биохимических показателей в мышечной ткани и уровня тестостерона в сыворотке крови. Наиболее адекватная коррекция висцерального ожирения, мышечной массы и биохимических показателей в мышечной ткани у крыс-самцов достигалась при переходе от высококалорийной к сбалансированной диете независимо от физических нагрузок. Таким образом, коррекция диет-индуцированного висцерального ожирения, мышечной массы и сопряженных метаболических сдвигов у крыс-самцов линии Вистар требует перехода к сбалансированному питанию.</p></trans-abstract><kwd-group xml:lang="en"><kwd>diet-induced visceral obesity</kwd><kwd>muscle mass reduction</kwd><kwd>muscle tissue metabolism</kwd><kwd>hormonal status</kwd><kwd>male rats</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>диет-индуцированное висцеральное ожирение</kwd><kwd>снижение мышечной массы</kwd><kwd>метаболизм мышечной ткани</kwd><kwd>гормональный статус</kwd><kwd>крысы-самцы линии Вистар</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>The European Health Report 2021. Taking stock of the health-related Sustainable Development Goals in the COVID-19 era with a focus on leaving no one behind. Copenhagen: WHO Regional Office for Europe; 2022. 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