<?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>2174-5145</journal-id>
<journal-title><![CDATA[Revista Española de Nutrición Humana y Dietética]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Esp Nutr Hum Diet]]></abbrev-journal-title>
<issn>2174-5145</issn>
<publisher>
<publisher-name><![CDATA[Academia Española de Nutrición y Dietética]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2174-51452017000300004</article-id>
<article-id pub-id-type="doi">10.14306/renhyd.21.3.352</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Incidencia del período vacacional de Navidad en el estado ponderal de escolares de Primaria]]></article-title>
<article-title xml:lang="en"><![CDATA[Incidence of the Christmas holiday period on the weight condition of Primary-school students]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Redondo]]></surname>
<given-names><![CDATA[Melchor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Latorre-Román]]></surname>
<given-names><![CDATA[Pedro Ángel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Jaén  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Spain</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2017</year>
</pub-date>
<volume>21</volume>
<numero>3</numero>
<fpage>230</fpage>
<lpage>236</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S2174-51452017000300004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S2174-51452017000300004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S2174-51452017000300004&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  El objetivo de este estudio fue conocer si existen cambios en el índice de masa corporal (IMC) en el alumnado de Educación Primaria tras el período no escolar de vacaciones de Navidad y las diferencias entre niños con normopeso, sobrepeso y obesidad.  Material y Métodos:  Estudio descriptivo longitudinal y prospectivo. Participaron 156 alumnos del colegio público Doctor Fleming de Jódar, Jaén (España), de 8 a 12 años de edad: 119 con normopeso, 18 con sobrepeso y 19 con obesidad. Se realizaron mediciones de talla, peso y cálculo del IMC en tres momentos: en período lectivo previo a las vacaciones de Navidad, tras período no lectivo vacacional (Navidad) y medición tras 20 días después de Navidad, con un intervalo de tiempo entre mediciones de 20 días.  Resultados:  Los datos obtenidos (media [desviación estándar]) mostraron un aumento del IMC tras el período de Navidad en todos los grupos: normopeso: 0,09(0,43)kg/m2; sobrepeso: 0,29(0,46)kg/m2; y obesidad: 0,50(0,70)kg/m2 con diferencias significativas entre los de normopeso y obesidad (p=0,007). Transcurridos 20 días tras la Navidad, los niños con normopeso se aproximaron a los valores cercanos a la primera medición con diferencias significativas (p&lt;0,05) en relación con los niños con obesidad que son los que menos disminuyen su IMC (0,04[0,56]kg/m2 frente a 0,38[0,50]kg/m2).  Conclusiones:  Los niños con obesidad incrementan en mayor medida su IMC tras el período de vacaciones de Navidad y no recuperan los valores iniciales en relación con los niños con normopeso.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  The aim of this study was to analyze changes in body mass index (BMI) of primary-school students and the differences between children with normal-weight, overweight and obesity after the Christmas holiday period.  Material and Methods:  Longitudinal and prospective descriptive study was performed. A total of 156 students of the public school Doctor Fleming from Jódar, Jaén (Spain) participated in this study, aged 8 to 12 years: 119 with normal-weight, 18 with overweight and 19 with obesity. Measurements of height, weight, and BMI were taken at three moments: in the school period prior to the Christmas holiday, after a non-school period (Christmas holiday) and 20 days after the Christmas holiday, with an interval time between measurements of 20 days.  Results:  The data (mean [standard deviation]) showed an increase in the BMI after the Christmas holiday period in all groups: normal-weight: 0.09(0.43)kg/m2; overweight: 0.29(0.46)kg/m2; and obesity: 0.50(0.70)kg/m2 with significant differences between normal-weight and obesity (p=0.007). After 20 days after Christmas, children with normal-weight were approximated to near values to the first measurement with significant differences (p&lt;0.05) in relation to children whit obesity who were the ones that least decrease their BMI (0.04[0.56]kg/m2 versus 0.38[0.50]kg/m2).  Conclusions:  Children with obesity showed higher values of BMI than normal-weight children during the non-school period, and they do not recover initial values in relation to normal-weight children.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Índice de Masa Corporal]]></kwd>
<kwd lng="es"><![CDATA[Niño]]></kwd>
<kwd lng="es"><![CDATA[Instituciones Académicas]]></kwd>
<kwd lng="es"><![CDATA[Vacaciones y Feriados]]></kwd>
<kwd lng="en"><![CDATA[Body Mass Index]]></kwd>
<kwd lng="en"><![CDATA[Child]]></kwd>
<kwd lng="en"><![CDATA[Schools]]></kwd>
<kwd lng="en"><![CDATA[Holidays]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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