<?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>S0212-16112019000400026</article-id>
<article-id pub-id-type="doi">10.20960/nh.02381</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Influencia del entrenamiento en fútbol sobre parámetros de estrés oxidativo en eritrocitos]]></article-title>
<article-title xml:lang="en"><![CDATA[Influence of soccer training on parameters of oxidative stress in erythrocytes]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Siquier Coll]]></surname>
<given-names><![CDATA[Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muñoz Marín]]></surname>
<given-names><![CDATA[Diedo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Grijota Pérez]]></surname>
<given-names><![CDATA[Francisco Javier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bartolomé Sánchez]]></surname>
<given-names><![CDATA[Ignacio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Robles Gil]]></surname>
<given-names><![CDATA[María Concepción]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Montero Arroyo]]></surname>
<given-names><![CDATA[Julio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Maynar Mariño]]></surname>
<given-names><![CDATA[Marcos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Extremadura Facultad de Ciencias del Deporte ]]></institution>
<addr-line><![CDATA[Cáceres ]]></addr-line>
<country>Spain</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Extremadura Facultad de Formación del Profesorado ]]></institution>
<addr-line><![CDATA[Cáceres ]]></addr-line>
<country>Spain</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2019</year>
</pub-date>
<volume>36</volume>
<numero>4</numero>
<fpage>926</fpage>
<lpage>930</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S0212-16112019000400026&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S0212-16112019000400026&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S0212-16112019000400026&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción: cualquier situación de estrés, entre las cuales se incluye la realización de ejercicio físico, implica la posibilidad de una excesiva producción de radicales libres y, por acción de estos, un estrés oxidativo en las células. Para combatir estos efectos, las células disponen de unos mecanismos de defensa denominados sistemas antioxidantes.  Objetivos: el objetivo del presente estudio se basa en analizar los posibles cambios fisiológicos en relación a parámetros relacionados con el estrés oxidativo (MDA) y con la actividad antioxidante (vitamina A, vitamina C y vitamina E) en los eritrocitos de jugadores profesionales de fútbol, en comparación con sujetos no entrenados.  Métodos: cuarenta y dos varones divididos en 21 jugadores de fútbol (SG) (24,95 ± 3,03 años) y 21 estudiantes sedentarios (CG) (23,71 ± 2,42 años) participaron en el estudio. Se les evaluaron los niveles basales de MDA, vitamina C, vitamina A y vitamina E en eritrocitos, así como las características antropométricas y el VO2max.  Resultados: se observaron diferencias significativas en las características antropométricas (p &lt; 0,05) y VO2max (p &gt; 0,01). SG presentó niveles estadísticamente inferiores de MDA (p &gt; 0,01), vitamina C (p &gt; 0,05), vitamina E (p &gt; 0,05) y vitamina A (p &gt; 0,01).  Conclusiones: existe un mayor estrés oxidativo en jugadores de fútbol que en sedentarios, por lo que puede ser necesaria una suplementación con antioxidantes en este grupo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction: the situations of stress among which physical exercise is included imply the possibility of an excessive production of free radicals and, by their action, an oxidative stress in the cells. To combat these effects, cells have defense mechanisms called antioxidant systems.  Objectives: the objective of this study is to analyze the possible physiological changes in relation to parameters related to oxidative stress (MDA) and antioxidant activity (vitamin A, vitamin C and vitamin E) in the erythrocytes of professional soccer players, in comparison with untrained subjects.  Methods: forty-two men divided into 21 soccer players (SG) (24.95 ± 3.03 years) and 21 sedentary students (CG) (23.71 ± 2.42 years) participated in the study. Their basal levels of MDA, vitamin C, vitamin A and vitamin E in erythrocytes, as well as their anthropometric characteristics and VO2max, were evaluated.  Results: significant differences were observed in the anthropometric characteristics (p &lt; 0.05) and VO2max (p &gt; 0.01). SG presented statistically lower levels of MDA (p &gt; 0.01), vitamin C (p &gt; 0.05), vitamin E (p &gt; 0.05) and vitamin A (p &gt; 0.01).  Conclusions: there is higher oxidative stress in soccer players than in sedentary players and it may be necessary to supplement with antioxidants in this group]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Estrés oxidativo]]></kwd>
<kwd lng="es"><![CDATA[Malondialdehido]]></kwd>
<kwd lng="es"><![CDATA[Actividad antioxidante no enzimática]]></kwd>
<kwd lng="en"><![CDATA[Oxidative stress]]></kwd>
<kwd lng="en"><![CDATA[Malondialdehyde]]></kwd>
<kwd lng="en"><![CDATA[Non-enzymatic antioxidant activity]]></kwd>
</kwd-group>
</article-meta>
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