<?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>0036-3634</journal-id>
<journal-title><![CDATA[Salud Pública de México]]></journal-title>
<abbrev-journal-title><![CDATA[Salud pública Méx]]></abbrev-journal-title>
<issn>0036-3634</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Salud Pública]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0036-36342018000300007</article-id>
<article-id pub-id-type="doi">10.21149/8819</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Prevalencia y tendencias de actividad física en niños y adolescentes: resultados de Ensanut 2012 y Ensanut MC 2016]]></article-title>
<article-title xml:lang="en"><![CDATA[Prevalence and trends of physical activity in children and adolescents: results of the Ensanut 2012 and Ensanut MC 2016]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Medina]]></surname>
<given-names><![CDATA[Catalina]]></given-names>
</name>
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</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Jáuregui]]></surname>
<given-names><![CDATA[Alejandra]]></given-names>
</name>
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</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Campos-Nonato]]></surname>
<given-names><![CDATA[Ismael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Barquera]]></surname>
<given-names><![CDATA[Simón]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Salud Pública  ]]></institution>
<addr-line><![CDATA[Cuernavaca ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2018</year>
</pub-date>
<volume>60</volume>
<numero>3</numero>
<fpage>263</fpage>
<lpage>271</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0036-36342018000300007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0036-36342018000300007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0036-36342018000300007&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Objetivo:  Describir la prevalencia y tendencias de actividad física (AF) en niños y adolescentes de la Encuesta Nacional de Salud y Nutrición (Ensanut) 2012 y Encuesta Nacional de Salud y Nutrición de Medio Camino (Ensanut MC) 2016.  Material y métodos:  Se recolectó información sobre AF a partir del cuestionario de comportamientos en salud para niños en edad escolar (HBSC) en niños y el Cuestionamiento Internacional de Actividad Física (IPAQ) en adolescentes.  Resultados:  Más de 80% de los niños y 35% de los adolescentes en México no cumple con las recomendaciones de AF. En el periodo 2012-2016, las niñas y escolares de la zona rural mostraron un aumento en la participación en actividades organizadas y deportes.  Conclusión:  La prevalencia de AF es baja en niños y adolescentes y la tendencia no ha mejorado en los últimos seis años.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Objective:  To describe the prevalence and trends of physical activity (PA) in children and adolescents from Ensanut 2012 and Ensanut MC 2016.  Materials and methods:  Physical activity levels were obtained from the Health Behaviour in School-aged Children (HBSC) and the nternational Physical ActivityI (IPAQ) questionnaires for children and adolescents respectively.  Results:  More than 80% of the children and 35% of the adolescents in Mexico do not meet the PA recommendations. From 2012-2016, girls and schoolchildren in the rural area showed an increase in participation in organized activities and sports.  Conclusion:  The prevalence of PA is low in children and adolescents and the trend has not improved in the last six years.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[niños]]></kwd>
<kwd lng="es"><![CDATA[encuestas nacionales]]></kwd>
<kwd lng="es"><![CDATA[actividad física]]></kwd>
<kwd lng="es"><![CDATA[IPAQ]]></kwd>
<kwd lng="es"><![CDATA[México]]></kwd>
<kwd lng="en"><![CDATA[children]]></kwd>
<kwd lng="en"><![CDATA[national surveys]]></kwd>
<kwd lng="en"><![CDATA[physical activity]]></kwd>
<kwd lng="en"><![CDATA[IPAQ]]></kwd>
<kwd lng="en"><![CDATA[Mexico]]></kwd>
</kwd-group>
</article-meta>
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