<?xml version="1.0" encoding="ISO-8859-1"?><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">
<front>
<journal-meta>
<journal-id>0212-1611</journal-id>
<journal-title><![CDATA[Nutrición Hospitalaria]]></journal-title>
<abbrev-journal-title><![CDATA[Nutr. Hosp.]]></abbrev-journal-title>
<issn>0212-1611</issn>
<publisher>
<publisher-name><![CDATA[Grupo Arán]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0212-16112021000400797</article-id>
<article-id pub-id-type="doi">10.20960/nh.03448</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Adiposity-related risks among the middle-aged and elderly Chinese: the role of siesta and nocturnal sleep duration]]></article-title>
<article-title xml:lang="es"><![CDATA[Riesgos relacionados con la adiposidad en chinos de mediana edad y ancianos: el papel de la siesta y la duración del sueño nocturno]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tang]]></surname>
<given-names><![CDATA[Xiangyu]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Yao]]></surname>
<given-names><![CDATA[Feifei]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[Kangkang]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Shekou People's Hospital Gastroenterology Department ]]></institution>
<addr-line><![CDATA[Shenzhen City Guangdong]]></addr-line>
<country>China</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Shekou People's Hospital Accreditation Department ]]></institution>
<addr-line><![CDATA[Shenzhen City Guangdong]]></addr-line>
<country>China</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Sun Yat-Sen University School of Public Health ]]></institution>
<addr-line><![CDATA[Guangzhou Guangdong]]></addr-line>
<country>China</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<volume>38</volume>
<numero>4</numero>
<fpage>797</fpage>
<lpage>806</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S0212-16112021000400797&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S0212-16112021000400797&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S0212-16112021000400797&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: increasingly, research suggests that lack of sleep is linked to adiposity worldwide, but few studies have been conducted in middle-aged and elderly Chinese subjects. The purpose of the present study was to analyze the association of siesta and nocturnal sleep duration with the prevalence of adiposity in middle-aged and elderly Chinese individuals.  Methods: a total of 7,891 community dwelling Chinese subjects who had participated in the 2015 China Health and Retirement Longitudinal Study were included. A four-stage random sampling method was used to select participants. Siesta and nocturnal sleep duration was self-reported. Adiposity, including general obesity and abdominal obesity, was assessed. Multiple logistic analyses were conducted to explore the association between siesta, nocturnal sleep duration, and adiposity.  Results: people with long siesta durations (&#8805; 1 hour/day) were significantly associated with an increased risk for abdominal obesity, independently and in all subgroup analyses, when compared to those without regular siesta. ORs after adjustment of confounding factors included: all subjects, OR = 1.45, 95 % CI, 1.23 to 1.70; middle-aged subjects, OR = 1.46, 95 % CI, 1.15 to 1.86; elderly, OR = 1.43, 95 % CI, 1.14 to 1.78.  Conclusions: our data show that siesta duration plays a role in the prevalence of age-specific abdominal obesity. Individuals with long siesta durations are more likely to have abdominal obesity among the middle-aged and elderly population when compared to those without regular siesta. The results of this study need to be confirmed by further studies.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Antecedentes: cada vez más investigaciones sugieren que la falta de sueño está relacionada con la adiposidad en todo el mundo, pero pocos estudios se han realizado en chinos de mediana edad y ancianos. El propósito del presente estudio fue analizar la asociación de la siesta y la duración del sueño nocturno con la prevalencia de la adiposidad en chinos de mediana edad y ancianos.  Métodos: se incluyeron en total 7891 chinos de la comunidad que habían participado en el "Estudio longitudinal de salud y jubilación en China" de 2015. Se utilizó el método de muestreo aleatorio de 4 etapas para seleccionar a los participantes. La duración de la siesta y del sueño nocturno fue autoinformada. Se evaluó la adiposidad, incluidas la obesidad general y la obesidad abdominal. Se realizaron múltiples análisis logísticos para explorar la asociación entre la siesta, la duración del sueño nocturno y la adiposidad.  Resultados: las personas con siestas prolongadas (&#8805; 1 hora al día) se asociaron significativamente a un mayor riesgo de obesidad abdominal, de forma independiente, en todos los análisis de subgrupos, en comparación con aquellos sin siesta regular. Los OR después de ajustar los factores de confusión fueron: todos los sujetos, OR = 1,45, IC del 95 %, 1,23 a 1,70; mediana edad: OR = 1,46, IC del 95 %, 1,15 a 1,86; ancianos: OR = 1,43, IC del 95 %, 1,14 a 1,78.  Conclusiones: nuestros datos muestran que la duración de la siesta juega un papel en la prevalencia de la obesidad abdominal específica de cada edad. Las personas con siestas prolongadas tienen más probabilidades de tener obesidad abdominal, entre la población de mediana edad y anciana, que las que no duermen siesta regularmente. Los resultados de este estudio deben ser confirmados por estudios adicionales.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Middle-aged]]></kwd>
<kwd lng="en"><![CDATA[Elderly]]></kwd>
<kwd lng="en"><![CDATA[Nocturnal sleep duration]]></kwd>
<kwd lng="en"><![CDATA[Siesta]]></kwd>
<kwd lng="en"><![CDATA[Obesity]]></kwd>
<kwd lng="es"><![CDATA[Mediana edad]]></kwd>
<kwd lng="es"><![CDATA[Anciano]]></kwd>
<kwd lng="es"><![CDATA[Duración del sueño nocturno]]></kwd>
<kwd lng="es"><![CDATA[Siesta]]></kwd>
<kwd lng="es"><![CDATA[Obesidad]]></kwd>
</kwd-group>
</article-meta>
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