<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.3 20210610//EN" "JATS-journalpublishing1-3.dtd">
<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">porozendo</journal-id><journal-title-group><journal-title xml:lang="ru">Остеопороз и остеопатии</journal-title><trans-title-group xml:lang="en"><trans-title>Osteoporosis and Bone Diseases</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2072-2680</issn><issn pub-type="epub">2311-0716</issn><publisher><publisher-name>Endocrinology Research Centre</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.14341/osteo13165</article-id><article-id custom-type="elpub" pub-id-type="custom">porozendo-13165</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>ОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL GUIDELINES</subject></subj-group></article-categories><title-group><article-title>Факторы риска дефицита витамина D и его взаимосвязь с саркопенией у людей в возрасте 65 лет и старше</article-title><trans-title-group xml:lang="en"><trans-title>Risk factors for vitamin D deficiency and association with sarcopenia in people 65 years and older</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2923-9712</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сафонова</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Safonova</surname><given-names>Yu. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сафонова Юлия Александровна, д.м.н., доцент кафедры гериатрии, пропедевтики и управления в сестринской деятельности имени Э.С. Пушковой ФГБОУ ВО СЗГМУ им. И.И. Мечникова, врач-ревматолог СПб ГБУЗ "Клиническая ревматологическая больница № 25"</p><p>191015, Санкт-Петербург, ул. Кирочная, д. 41 </p><p>ResearcherID: O-9438-2015;</p><p>Scopus Author ID: 57200557368</p><p> </p></bio><bio xml:lang="en"><p>Yuliya A. Safonova, MD, PhD, Associate professor</p><p>41 Kirochnaya street, 191015 St. Petersburg</p><p>ResearcherID: O-9438-2015;</p><p>Scopus Author ID: 57200557368</p></bio><email xlink:type="simple">jula_safonova@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">ФГБОУ ВО «Северо-Западный государственный медицинский университет имени И.И. Мечникова» Минздрава России;&#13;
СПб ГБУ «Клиническая ревматологическая больница №25»<country>Россия</country></aff><aff xml:lang="en">The North-West State Medical University named after I.I. Mechnikov;&#13;
City Clinical Rheumatological Hospital N 25<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>11</day><month>06</month><year>2024</year></pub-date><volume>27</volume><issue>2</issue><fpage>15</fpage><lpage>23</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Сафонова Ю.А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Сафонова Ю.А.</copyright-holder><copyright-holder xml:lang="en">Safonova Y.A.</copyright-holder><license 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://www.osteo-endojournals.ru/jour/article/view/13165">https://www.osteo-endojournals.ru/jour/article/view/13165</self-uri><abstract><sec><title>ОБОСНОВАНИЕ</title><p>ОБОСНОВАНИЕ. Дефицит витамина D показал значимую роль в нарушении поддержания мышечной массы и функции скелетных мышц, которые прогрессирующе снижаются у пациентов с саркопенией в пожилом и старческом возрасте.</p></sec><sec><title>ЦЕЛЬ</title><p>ЦЕЛЬ. Оценить частоту и факторы риска дефицита витамина D и выявить его взаимосвязь с саркопенией у людей в возрасте 65 лет и старше.</p></sec><sec><title>МАТЕРИАЛЫ И МЕТОДЫ</title><p>МАТЕРИАЛЫ И МЕТОДЫ. В исследование включены 230 человек 65 лет и старше (медиана возраста 75 [68; 79] лет). Выполнены анкетирование с определением психического статуса на этапе скрининга по опроснику Mini-Mental State Examination (MMSE), уровня физической активности по опроснику International Physical Activity Questionnaire (IPAQ). Диагностику саркопении проводили в соответствии с критериями EWGSOP2 (2018 г.). Концентрацию 25(ОН)D в сыворотке крови определяли методом иммуноферментного анализа на аппарате Architect i2000SR (Abbot, США).</p></sec><sec><title>РЕЗУЛЬТАТЫ</title><p>РЕЗУЛЬТАТЫ. Люди с дефицитом и без дефицита витамина D не различались по возрасту, полу, уровню физической активности, статусу курения и другим социальным характеристикам (р&gt;0,05). У лиц с недостаточным ИМТ и ожирением дефицит витамина D встречался чаще по сравнению с теми, кто имел нормальную или избыточную массу тела (р&lt;0,001). Вероятная саркопения установлена у 64,8% участников 65 лет и старше, подтвержденная — у 28,7%, тяжелую саркопению наблюдали у 21,3% человек. Дефицит витамина D увеличивал вероятность саркопении в 4,989 (95% ДИ 1,321–12,626; р=0,0420) раза и ассоциировался со слабой мышечной силой (ОШ=2,613; 95% ДИ 1,993–3,270; р=0,00116) и низкой физической работоспособностью по результатам SPPB тестов (ОШ=1,905; 95% ДИ 1,342–2,710; р=0,00034) и теста «Встань и иди» (ОШ=1,364; 95% ДИ 1,003–1,853; р=0,047).</p></sec><sec><title>ЗАКЛЮЧЕНИЕ</title><p>ЗАКЛЮЧЕНИЕ. Дефицит витамина D, установленный у 58,7% людей в возрасте 65 лет и старше, связан с недостаточным ИМТ и ожирением. У пациентов с саркопенией он выявлялся в 72,7% случаев и ассоциировался с возрастом, ИМТ менее 25 кг/м2, недостаточной физической активностью и низкой функцией скелетных мышц.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>BACKGROUND</title><p>BACKGROUND: Vitamin D deficiency has shown a significant role in the impairment of muscle mass maintenance and skeletal muscle function, which are progressively reduced in sarcopenic patients with sarcopenia in the elderly. However, there are different points of view about the relationship between vitamin D deficiency and sarcopenia.</p></sec><sec><title>AIM</title><p>AIM: to assess the frequency and risk factors for vitamin D deficiency and identify the relationship with sarcopenia in people 65 years of age and older.</p></sec><sec><title>MATERIALS AND METHODS</title><p>MATERIALS AND METHODS: the study included 230 people 65 years of age and older (median age 75 [68; 79] years) who completed a questionnaire using the Mini-Mental State Examination (MMSE), International Physical Activity Questionnaire (IPAQ). Sarcopenia was diagnosed according to EWGSOP2 criteria (2018). 25(OH)D was determined by enzyme immunoassay (Architect i2000SR, Abbot, USA).</p></sec><sec><title>RESULTS</title><p>RESULTS: there were no differences in age, gender, physical activity, smoking and other social characteristics between people with and without vitamin D deficiency (p&gt;0.05). Vitamin D deficiency was detected more often in people with low BMI and obesity (p&lt;0.001). Probable sarcopenia was detected in 64.8% of people 65 years of age and older, confirmed — in 28.7%, severe — in 21.3% of people. Vitamin D deficiency increased the risk of sarcopenia (OR=4.989; 95% CI 1.321–12.626; p=0.0420) and was associated with low muscle strength (OR=2.613; 95% CI 1.993–3.270; p=0.00116), low physical performance according to the results of the SPPB tests (OR = 1.905; 95% CI 1.342–2.710; p=0.00034) and the Timed Up and Go test (OR=1.364; 95% CI 1.003–1.853; p=0.047).</p></sec><sec><title>CONCLUSION</title><p>CONCLUSION: vitamin D deficiency was detected in 58.7% of elderly people and was associated with insufficient BMI and obesity. In sarcopenic patients, vitamin D deficiency was detected in 72.7% and was associated with age, BMI less than 25 kg/m2, low physical activity and low skeletal muscle function.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>пожилой возраст</kwd><kwd>мышечная масса</kwd><kwd>мышечная сила</kwd><kwd>функция скелетных мышц</kwd><kwd>саркопения</kwd><kwd>дефицит витамина D</kwd></kwd-group><kwd-group xml:lang="en"><kwd>elderly</kwd><kwd>muscle mass</kwd><kwd>muscle strength</kwd><kwd>skeletal muscle function</kwd><kwd>sarcopenia</kwd><kwd>vitamin D deficiency</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">Pludowski P, Grant WB, Konstantynowicz J, Holick MF. Editorial: Classic and pleiotropic actions of vitamin D. Front Endocrinol (Lausanne). 2019;(10):217-230. doi: https://doi.org/10.3389/fendo.2019.00341</mixed-citation><mixed-citation xml:lang="en">Pludowski P, Grant WB, Konstantynowicz J, Holick MF. Editorial: Classic and pleiotropic actions of vitamin D. Front Endocrinol (Lausanne). 2019;(10):217-230. doi: https://doi.org/10.3389/fendo.2019.00341</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Bikle DD. Vitamin D: Production, Metabolism and Mechanisms of Action. In: Feingold KR, Anawalt B, Boyce A, et al. Endotext. South Dartmouth (MA): MDText.com, Inc.; 2021</mixed-citation><mixed-citation xml:lang="en">Bikle DD. Vitamin D: Production, Metabolism and Mechanisms of Action. In: Feingold KR, Anawalt B, Boyce A, et al. Endotext. South Dartmouth (MA): MDText.com, Inc.; 2021</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Montenegro KR, Cruzat V, Carlessi R, Newsholme P. Mechanisms of vitamin D action in skeletal muscle. Nutr Res Rev. 2019;32(2):192-204 doi: https://doi.org/110.1017/S0954422419000064</mixed-citation><mixed-citation xml:lang="en">Montenegro KR, Cruzat V, Carlessi R, Newsholme P. Mechanisms of vitamin D action in skeletal muscle. Nutr Res Rev. 2019;32(2):192-204 doi: https://doi.org/110.1017/S0954422419000064</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Пигарова Е.А., Петрушкина А.А. Неклассические эффекты витамина D // Остеопороз и остеопатии. — 2017. — Т. 20. — №3. — С. 90–101. doi: https://doi.org/10.14341/osteo2017390-101</mixed-citation><mixed-citation xml:lang="en">Pigarova EA, Petrushkina AA. Non-classical effects of vitamin D. Osteoporosis and Bone Diseases. 2017;20(3):90-101. (In Russ.). doi: https://doi.org/10.14341/osteo2017390-101</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Olsson K, Saini A, Strömberg A, et al. Evidence for Vitamin D Receptor Expression and Direct Effects of 1α,25(OH)2D3 in Human Skeletal Muscle Precursor Cells. Endocrinology. 2016;157(1):98-111. doi: https://doi.org/10.1210/en.2015-1685</mixed-citation><mixed-citation xml:lang="en">Olsson K, Saini A, Strömberg A, et al. Evidence for Vitamin D Receptor Expression and Direct Effects of 1α,25(OH)2D3 in Human Skeletal Muscle Precursor Cells. Endocrinology. 2016;157(1):98-111. doi: https://doi.org/10.1210/en.2015-1685</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Hii CS, Ferrante A. The Non-Genomic Actions of Vitamin D. Nutrients. 2016;8(3):135. doi: https://doi.org/10.3390/nu8030135</mixed-citation><mixed-citation xml:lang="en">Hii CS, Ferrante A. The Non-Genomic Actions of Vitamin D. Nutrients. 2016;8(3):135. doi: https://doi.org/10.3390/nu8030135</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Dzik KP, Kaczor JJ. Mechanisms of vitamin D on skeletal muscle function: oxidative stress, energy metabolism and anabolic state. Eur J Appl Physiol. 2019;119(4):825-839. doi: https://doi.org/10.1007/s00421-019-04104-x</mixed-citation><mixed-citation xml:lang="en">Dzik KP, Kaczor JJ. Mechanisms of vitamin D on skeletal muscle function: oxidative stress, energy metabolism and anabolic state. Eur J Appl Physiol. 2019;119(4):825-839. doi: https://doi.org/10.1007/s00421-019-04104-x</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Talbot J, Maves L. Skeletal muscle fiber type: using insights from muscle developmental biology to dissect targets for susceptibility and resistance to muscle disease. Wiley Interdiscip Rev Dev Biol. 2016;5(4):518-534. doi: https://doi.org/10.1002/wdev.230</mixed-citation><mixed-citation xml:lang="en">Talbot J, Maves L. Skeletal muscle fiber type: using insights from muscle developmental biology to dissect targets for susceptibility and resistance to muscle disease. Wiley Interdiscip Rev Dev Biol. 2016;5(4):518-534. doi: https://doi.org/10.1002/wdev.230</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Girgis CM, Cha KM, So B, et al. Mice with myocyte deletion of vitamin D receptor have sarcopenia and impaired muscle function. J. Cachexia Sarcopenia Muscle. 2019;10(6):1228-1240. doi: https://doi.org/10.1002/jcsm.12460</mixed-citation><mixed-citation xml:lang="en">Girgis CM, Cha KM, So B, et al. Mice with myocyte deletion of vitamin D receptor have sarcopenia and impaired muscle function. J. Cachexia Sarcopenia Muscle. 2019;10(6):1228-1240. doi: https://doi.org/10.1002/jcsm.12460</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Kweder H, Eidi H. Vitamin D deficiency in elderly: Risk factors and drugs impact on vitamin D status. Avicenna J Med. 2018;8(4):139-146. doi: https://doi.org/10.4103/ajm.AJM_20_18</mixed-citation><mixed-citation xml:lang="en">Kweder H, Eidi H. Vitamin D deficiency in elderly: Risk factors and drugs impact on vitamin D status. Avicenna J Med. 2018;8(4):139-146. doi: https://doi.org/10.4103/ajm.AJM_20_18</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Lips P, Cashman KD, Lamberg-Allardt C, et.al. Current vitamin D status in European and Middle East countries and strategies to prevent vitamin D deficiency: a position statement of the European Calcified Tissue Society. European Journal of Endocrinology. 2019;180(4):23-54. doi: https://doi.org/10.1530/EJE-18-0736.80,P23–P54</mixed-citation><mixed-citation xml:lang="en">Lips P, Cashman KD, Lamberg-Allardt C, et.al. Current vitamin D status in European and Middle East countries and strategies to prevent vitamin D deficiency: a position statement of the European Calcified Tissue Society. European Journal of Endocrinology. 2019;180(4):23-54. doi: https://doi.org/10.1530/EJE-18-0736.80,P23–P54</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Carrillo-Vega MF, García-Peña C, Gutiérrez-Robledo LM, Pérez-Zepeda MU. Vitamin D deficiency in older adults and its associated factors: a cross-sectional analysis of the Mexican Health and Aging Study. Arch Osteoporos. 2017;12(1):8. doi: https://doi.org/10.1007/s11657-016-0297-9</mixed-citation><mixed-citation xml:lang="en">Carrillo-Vega MF, García-Peña C, Gutiérrez-Robledo LM, Pérez-Zepeda MU. Vitamin D deficiency in older adults and its associated factors: a cross-sectional analysis of the Mexican Health and Aging Study. Arch Osteoporos. 2017;12(1):8. doi: https://doi.org/10.1007/s11657-016-0297-9</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Сафонова Ю.А., Торопцова Н.В. Дефицит и недостаточность витамина D, факторы риска и его коррекция у людей пожилого возраста // Русский медицинский журнал. — 2021. — №6. — С. 96–100.</mixed-citation><mixed-citation xml:lang="en">Safonova YuA, Toroptsova NV. Vitamin D deficiency and insufficiency, risk factors and its correction in elderly people. Russian Medical Journal. 2021;(6):96-100 (In Russ.)</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Hilger J, Friedel A, Herr R, et al. A systematic review of vitamin D status in populations worldwide. British Journal of Nutrition. 2014;111(1):23-45. doi: https://doi.org/10.1017/S0007114513001840</mixed-citation><mixed-citation xml:lang="en">Hilger J, Friedel A, Herr R, et al. A systematic review of vitamin D status in populations worldwide. British Journal of Nutrition. 2014;111(1):23-45. doi: https://doi.org/10.1017/S0007114513001840</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Каронова Т.Л., Шмонина И.А., Андреева А.Т. и др. Дефицит витамина D: причина или следствие ожирения? // Consilium Medicum. –– 2016. –– Т. 8. –– №4. –– С. 49–52.</mixed-citation><mixed-citation xml:lang="en">Karonova TL, Shmonina IA, Andreeva AT, et al. Vitamin D deficiency: the cause or the result of obesity? Consilium Medicum. 2016;18(4):49–52. (In Russ.)</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Vimaleswaran KS, Berry DJ, Lu C, et al. Causal relationship between obesity and vitamin D status: bi-directional Mendelian randomization analysis of multiple cohorts. PLoS Med. 2013;10(2):e1001383. doi: https://doi.org/10.1371/journal.pmed.1001383</mixed-citation><mixed-citation xml:lang="en">Vimaleswaran KS, Berry DJ, Lu C, et al. Causal relationship between obesity and vitamin D status: bi-directional Mendelian randomization analysis of multiple cohorts. PLoS Med. 2013;10(2):e1001383. doi: https://doi.org/10.1371/journal.pmed.1001383</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Sousa-Santos AR, Afonso C, Santos A, et al. The association between 25(OH)D levels, frailty status and obesity indices in older adults. PLoS One. 2018;13(8):e0198650. doi: https://doi.org/10.1371/journal.pone.0198650</mixed-citation><mixed-citation xml:lang="en">Sousa-Santos AR, Afonso C, Santos A, et al. The association between 25(OH)D levels, frailty status and obesity indices in older adults. PLoS One. 2018;13(8):e0198650. doi: https://doi.org/10.1371/journal.pone.0198650</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Pereira-Santos M, Costa PR, Assis AM, et al. Obesity and vitamin D deficiency: a systematic review and meta-analysis. Obesity Reviews. 2016;16(4):341-349. doi: https://doi.org/10.1111/obr.12239</mixed-citation><mixed-citation xml:lang="en">Pereira-Santos M, Costa PR, Assis AM, et al. Obesity and vitamin D deficiency: a systematic review and meta-analysis. Obesity Reviews. 2016;16(4):341-349. doi: https://doi.org/10.1111/obr.12239</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Chen J, Yun C, He Y, et al. Vitamin D status among the elderly Chinese population: a cross-sectional analysis of the 2010-2013 China national nutrition and health survey (CNNHS). Nutr J. 2017;16(1):3. doi: https://doi.org/10.1186/s12937-016-0224-3</mixed-citation><mixed-citation xml:lang="en">Chen J, Yun C, He Y, et al. Vitamin D status among the elderly Chinese population: a cross-sectional analysis of the 2010-2013 China national nutrition and health survey (CNNHS). Nutr J. 2017;16(1):3. doi: https://doi.org/10.1186/s12937-016-0224-3</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Alharbi AF, Ali M, Alrefaey YI, et al. Association Between Serum Vitamin D Levels and Body Mass Index Status: A Cross-Sectional Study at King Khalid Hospital, Jeddah, Saudi Arabia, From 2019 to 2020. Cureus. 2023;15(10):e46927. doi: https://doi.org/10.7759/cureus.46927</mixed-citation><mixed-citation xml:lang="en">Alharbi AF, Ali M, Alrefaey YI, et al. Association Between Serum Vitamin D Levels and Body Mass Index Status: A Cross-Sectional Study at King Khalid Hospital, Jeddah, Saudi Arabia, From 2019 to 2020. Cureus. 2023;15(10):e46927. doi: https://doi.org/10.7759/cureus.46927</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Głogowska-Szeląg J, Bełz A, Kajdaniuk D, et al. Relationship Between Body Mass Index-BMI and Vitamin D Concentrations in Women with Postmenopausal Osteoporosis. Current Women`s Health Reviews. 2021;17(4):316-320. doi: https://doi.org/10.2174/1573404817666210105150707</mixed-citation><mixed-citation xml:lang="en">Głogowska-Szeląg J, Bełz A, Kajdaniuk D, et al. Relationship Between Body Mass Index-BMI and Vitamin D Concentrations in Women with Postmenopausal Osteoporosis. Current Women`s Health Reviews. 2021;17(4):316-320. doi: https://doi.org/10.2174/1573404817666210105150707</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">Kim SH, Oh JE, Song DW, et al. The factors associated with Vitamin D deficiency in community dwelling elderly in Korea. Nutr Res Pract. 2018;12(5):387-395. doi: https://doi.org/10.4162/nrp.2018.12.5.387</mixed-citation><mixed-citation xml:lang="en">Kim SH, Oh JE, Song DW, et al. The factors associated with Vitamin D deficiency in community dwelling elderly in Korea. Nutr Res Pract. 2018;12(5):387-395. doi: https://doi.org/10.4162/nrp.2018.12.5.387</mixed-citation></citation-alternatives></ref><ref id="cit23"><label>23</label><citation-alternatives><mixed-citation xml:lang="ru">Yang L, Zhao H, Liu K, et al. Smoking behavior and circulating vitamin D levels in adults: A meta-analysis. Food Sci Nutr. 2021;9(10):5820-5832. doi: https://doi.org/10.1002/fsn3.2488.</mixed-citation><mixed-citation xml:lang="en">Yang L, Zhao H, Liu K, et al. Smoking behavior and circulating vitamin D levels in adults: A meta-analysis. Food Sci Nutr. 2021;9(10):5820-5832. doi: https://doi.org/10.1002/fsn3.2488.</mixed-citation></citation-alternatives></ref><ref id="cit24"><label>24</label><citation-alternatives><mixed-citation xml:lang="ru">Luo J, Quan Z, Lin S, Cui L. The association between blood concentration of 25- hydroxyvitamin D and sarcopenia: a meta-analysis. Asia Pac J Clin Nutr. 2018;27(6):1258-1270. doi: https://doi.org/10.6133/apjcn.201811_27(6).0013</mixed-citation><mixed-citation xml:lang="en">Luo J, Quan Z, Lin S, Cui L. The association between blood concentration of 25- hydroxyvitamin D and sarcopenia: a meta-analysis. Asia Pac J Clin Nutr. 2018;27(6):1258-1270. doi: https://doi.org/10.6133/apjcn.201811_27(6).0013</mixed-citation></citation-alternatives></ref><ref id="cit25"><label>25</label><citation-alternatives><mixed-citation xml:lang="ru">Sha T, Wang Y, Zhang Y, et al. Genetic Variants, Serum 25-Hydroxyvitamin D Levels, and Sarcopenia: A Mendelian Randomization Analysis. JAMA Netw Open. 2023;6(8):e2331558. doi: https://doi.org/10.1001/jamanetworkopen.2023.31558</mixed-citation><mixed-citation xml:lang="en">Sha T, Wang Y, Zhang Y, et al. Genetic Variants, Serum 25-Hydroxyvitamin D Levels, and Sarcopenia: A Mendelian Randomization Analysis. JAMA Netw Open. 2023;6(8):e2331558. doi: https://doi.org/10.1001/jamanetworkopen.2023.31558</mixed-citation></citation-alternatives></ref><ref id="cit26"><label>26</label><citation-alternatives><mixed-citation xml:lang="ru">Aspell N, Laird E, Healy M, et.al. Vitamin D Deficiency Is Associated With Impaired Muscle Strength And Physical Performance In Community-Dwelling Older Adults: Findings From The English Longitudinal Study Of Ageing. Clinical Interventions in Aging. 2019;14:1751–1761. doi: https://doi.org/10.2147/CIA.S222143</mixed-citation><mixed-citation xml:lang="en">Aspell N, Laird E, Healy M, et.al. Vitamin D Deficiency Is Associated With Impaired Muscle Strength And Physical Performance In Community-Dwelling Older Adults: Findings From The English Longitudinal Study Of Ageing. Clinical Interventions in Aging. 2019;14:1751–1761. doi: https://doi.org/10.2147/CIA.S222143</mixed-citation></citation-alternatives></ref><ref id="cit27"><label>27</label><citation-alternatives><mixed-citation xml:lang="ru">Granic A, Hill TR, Davies K, et al. Vitamin D Status, Muscle Strength and Physical Performance Decline in Very Old Adults: A Prospective Study. Nutrients. 2017;9(4):379. doi: https://doi.org/10.3390/nu9040379</mixed-citation><mixed-citation xml:lang="en">Granic A, Hill TR, Davies K, et al. Vitamin D Status, Muscle Strength and Physical Performance Decline in Very Old Adults: A Prospective Study. Nutrients. 2017;9(4):379. doi: https://doi.org/10.3390/nu9040379</mixed-citation></citation-alternatives></ref><ref id="cit28"><label>28</label><citation-alternatives><mixed-citation xml:lang="ru">Mendes J, Santos A, Borges N, et.al. Vitamin D status and functional parameters: A cross-sectional study in an older population. PLoS ONE. 2018;13(8):e0201840. doi: https://doi.org/10.1371/journal.pone.0201840</mixed-citation><mixed-citation xml:lang="en">Mendes J, Santos A, Borges N, et.al. Vitamin D status and functional parameters: A cross-sectional study in an older population. PLoS ONE. 2018;13(8):e0201840. doi: https://doi.org/10.1371/journal.pone.0201840</mixed-citation></citation-alternatives></ref><ref id="cit29"><label>29</label><citation-alternatives><mixed-citation xml:lang="ru">Kim MK, Baek KH, Song KH, et al. Vitamin D deficiency is associated with sarcopenia in older Koreans, regardless of obesity: the Fourth Korea National Health and Nutrition Examination Surveys (KNHANES IV) 2009. J Clin Endocrinol Metab. 2011;96(10):3250–3256. doi: https://doi.org/10.1210/jc.2011-1602</mixed-citation><mixed-citation xml:lang="en">Kim MK, Baek KH, Song KH, et al. Vitamin D deficiency is associated with sarcopenia in older Koreans, regardless of obesity: the Fourth Korea National Health and Nutrition Examination Surveys (KNHANES IV) 2009. J Clin Endocrinol Metab. 2011;96(10):3250–3256. doi: https://doi.org/10.1210/jc.2011-1602</mixed-citation></citation-alternatives></ref><ref id="cit30"><label>30</label><citation-alternatives><mixed-citation xml:lang="ru">Matheï C, Pottelbergh GV, Vaes B, et al. No relation between vitamin D status and physical performance in the oldest old: Results from the Belfrail study. Age Ageing. 2013;42:186–190. doi: https://doi.org/10.1093/ageing/afs186</mixed-citation><mixed-citation xml:lang="en">Matheï C, Pottelbergh GV, Vaes B, et al. No relation between vitamin D status and physical performance in the oldest old: Results from the Belfrail study. Age Ageing. 2013;42:186–190. doi: https://doi.org/10.1093/ageing/afs186</mixed-citation></citation-alternatives></ref><ref id="cit31"><label>31</label><citation-alternatives><mixed-citation xml:lang="ru">Сафонова Ю.А., Зоткин Е.Г., Глазунова Г.М. Распространенность дефицита витамина D у пожилых людей с саркопенией на северо-западе России // Вестник Санкт-Петербургского Университета. Медицина. — 2019. — Т. 14. — №1. — С. 58–68. doi: https://doi.org/10.21638/11701/spbu10.2019.107</mixed-citation><mixed-citation xml:lang="en">Safonova YuA, Zotkin EG, Glazunova GM. Prevalence of vitamin D deficiency in the elderly with sarcopenia in north-west of Russia. Bulletin of St. Petersburg University. Medicine. 2019;14(1):58–68. (In Russ.). doi: https://doi.org/10.21638/11701/spbu10.2019.107</mixed-citation></citation-alternatives></ref><ref id="cit32"><label>32</label><citation-alternatives><mixed-citation xml:lang="ru">Jia S, Zhao W, Hu F, et al. Sex differences in the association of physical activity levels and vitamin D with obesity, sarcopenia, and sarcopenic obesity: a cross-sectional study. BMC Geriatr. 2022;22(1):898. doi: https://doi.org/10.1186/s12877-022-03577-4</mixed-citation><mixed-citation xml:lang="en">Jia S, Zhao W, Hu F, et al. Sex differences in the association of physical activity levels and vitamin D with obesity, sarcopenia, and sarcopenic obesity: a cross-sectional study. BMC Geriatr. 2022;22(1):898. doi: https://doi.org/10.1186/s12877-022-03577-4</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
