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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 Child Neurology</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Child Neurology</journal-title><trans-title-group xml:lang="ru"><trans-title>Русский журнал детской неврологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2073-8803</issn><issn publication-format="electronic">2412-9178</issn><publisher><publisher-name xml:lang="en">Publishing House ABV Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">211</article-id><article-id pub-id-type="doi">10.17650/2073-8803-2017-12-2-40-42</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL REPORTS</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">CIRCADIAN SLEEP DISORDERS IN SCHOOLCHILDREN OF COUNTRYSIDE SIBERIA</article-title><trans-title-group xml:lang="ru"><trans-title>Циркадные нарушения сна у школьников старших классов сельскохозяйственного района Сибири</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gazenkampf</surname><given-names>K. A.</given-names></name><name xml:lang="ru"><surname>Газенкампф</surname><given-names>К. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>1 Partizan Zheleznyak Str., Krasnoyarsk 660022</p></bio><bio xml:lang="ru"><p>660022 Красноярск, ул. Партизана Железняка, 1</p></bio><email>Hassenkampf@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Omelenchuk</surname><given-names>R. K.</given-names></name><name xml:lang="ru"><surname>Омеленчук</surname><given-names>Р. К.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>101 1st of May Str., Aban settlement, Abansky District, Krasnoyarsk Region 663740</p></bio><bio xml:lang="ru"><p>663740 Красноярский край, Абанский р-н, пос. Абан, ул. 1-го Мая, 101</p></bio><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Emelyanova</surname><given-names>V. N.</given-names></name><name xml:lang="ru"><surname>Емельянова</surname><given-names>В. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>101 1st of May Str., Aban settlement, Abansky District, Krasnoyarsk Region 663740</p></bio><bio xml:lang="ru"><p>663740 Красноярский край, Абанский р-н, пос. Абан, ул. 1-го Мая, 101</p></bio><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shnayder</surname><given-names>N. A.</given-names></name><name xml:lang="ru"><surname>Шнайдер</surname><given-names>Н. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>1 Partizan Zheleznyak Str., Krasnoyarsk 660022</p></bio><bio xml:lang="ru"><p>660022 Красноярск, ул. Партизана Железняка, 1</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Alekseeva</surname><given-names>A. N.</given-names></name><name xml:lang="ru"><surname>Алексеева</surname><given-names>А. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>24 40 years of Victory Str., Krasnoyarsk 660132</p></bio><bio xml:lang="ru"><p>660132 Красноярск, ул. 40 лет Победы, 24</p></bio><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Alekseeva</surname><given-names>O. V.</given-names></name><name xml:lang="ru"><surname>Алексеева</surname><given-names>О. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>1 Partizan Zheleznyak Str., Krasnoyarsk 660022</p></bio><bio xml:lang="ru"><p>660022 Красноярск, ул. Партизана Железняка, 1</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kazantsev</surname><given-names>A. D.</given-names></name><name xml:lang="ru"><surname>Казанцев</surname><given-names>А. Д.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>1 Partizan Zheleznyak Str., Krasnoyarsk 660022</p></bio><bio xml:lang="ru"><p>660022 Красноярск, ул. Партизана Железняка, 1</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Fadeeva</surname><given-names>E. P.</given-names></name><name xml:lang="ru"><surname>Фадеева</surname><given-names>Э. П.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>1 Partizan Zheleznyak Str., Krasnoyarsk 660022</p></bio><bio xml:lang="ru"><p>660022 Красноярск, ул. Партизана Железняка, 1</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Dmitrenko</surname><given-names>D. V.</given-names></name><name xml:lang="ru"><surname>Дмитренко</surname><given-names>Д. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>1 Partizan Zheleznyak Str., Krasnoyarsk 660022</p></bio><bio xml:lang="ru"><p>660022 Красноярск, ул. Партизана Железняка, 1</p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Krasnoyarsk State Medical University named after V.F. Voino-Yasenetsky, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГБОУ ВО «Красноярский государственный медицинский университет им. проф. В.Ф. Войно-Ясенецкого» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Secondary school No. 4</institution></aff><aff><institution xml:lang="ru">МБОУ Средняя общеобразовательная школа № 4</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Secondary school No. 144</institution></aff><aff><institution xml:lang="ru">МБОУ Средняя общеобразовательная школа № 144</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2017-04-15" publication-format="electronic"><day>15</day><month>04</month><year>2017</year></pub-date><volume>12</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>40</fpage><lpage>42</lpage><history><date date-type="received" iso-8601-date="2017-08-08"><day>08</day><month>08</month><year>2017</year></date><date date-type="accepted" iso-8601-date="2017-08-08"><day>08</day><month>08</month><year>2017</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2017, ABV-Press</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2017, АБВ-пресс</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="en">ABV-Press</copyright-holder><copyright-holder xml:lang="ru">АБВ-пресс</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://rjdn.abvpress.ru/jour/about/editorialPolicies</ali:license_ref></license></permissions><self-uri xlink:href="https://rjdn.abvpress.ru/jour/article/view/211">https://rjdn.abvpress.ru/jour/article/view/211</self-uri><abstract xml:lang="en"><p><bold>Background</bold>. Sleep is an important part of a healthy lifestyle, affecting all aspects of human life. Formation of the sleep–wake regime is associated with other physiological processes in the human body. Sleep disorders can lead to the development of various physical and psychological disorders. In schoolchildren and students sleep disorders can lead to memory loss, increase in anxiety and fatigue. Taken together, these factors can lead to lower performance. A variety of internal and external factors can lead to disruption of sleep: stress, much physical and emotional strain, artificial light in the streets, excessive activity of a person during the night (night work, homework etc.). Schoolchildren, living in rural areas, also suffer from sleep disorders. Most of the schoolchildren of countryside are not satisfied with the quality of nocturnal sleep, sleep at least 8 hours a day and notice daytime sleepiness.</p><p><bold>Objective</bold>: to estimate derangements of circadian rhythms of a sleep at schoolchildren of the senior classes, living in countryside.</p><p><bold>Materials and methods</bold>. 67 questionnaires of schoolchildren of the 10th grades of schools of the Abansky District of the Krasnoyarsk Region were analyzed. To estimate the daytime sleepiness, duration and quality of sleep there were used the Child Sleep Questionnaire and the Epworth Sleepiness Scale.</p><p><bold>Results</bold>. A derangements of nocturnal sleep were registered in 52 % of schoolchildren of the 10th grades.</p><p><bold>Conclusion</bold>. Identified sleep disorders in schoolchildren can cause serious damage to their health and cause the development of a serious disorders in the future. </p></abstract><trans-abstract xml:lang="ru"><p/></trans-abstract><kwd-group xml:lang="en"><kwd>sleep</kwd><kwd>circadian rhythms</kwd><kwd>schoolchildren</kwd><kwd>countryside</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>сон</kwd><kwd>циркадные ритмы</kwd><kwd>школьники</kwd><kwd>сельская местность</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">1. Алексеева А.Н., Жданова В.Н., Шнайдер Н.А., Газенкампф К.А. Циркадные нарушения сна у школьников старших классов крупного промышленного города Сибири. Международный студенческий научный вестник 2016;4:713–16. [Alekseeva A.N., Zhdanova V.N., Shnayder N.A., Gazenkampf K.A. 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