<?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>2184-1004</journal-id>
<journal-title><![CDATA[PsychTech & Health Journal]]></journal-title>
<abbrev-journal-title><![CDATA[PsychTech]]></abbrev-journal-title>
<issn>2184-1004</issn>
<publisher>
<publisher-name><![CDATA[PsychTech & Health Journal]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2184-10042017000200038</article-id>
<article-id pub-id-type="doi">10.26580/pthj.art4-2017</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Atividade física, autoconceito e aproveitamento escolar em adolescentes portugueses]]></article-title>
<article-title xml:lang="en"><![CDATA[The physical activity, self-concept and academic performance among Portuguese adolescents]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[André Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Costa]]></surname>
<given-names><![CDATA[Ana M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Nunes]]></surname>
<given-names><![CDATA[Claudia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Maciel]]></surname>
<given-names><![CDATA[Raquel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodrigues]]></surname>
<given-names><![CDATA[Pedro G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade do Minho  ]]></institution>
<addr-line><![CDATA[Braga ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Home Natural Therapy  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,ISMAI  ]]></institution>
<addr-line><![CDATA[Maia ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidade de Aveiro  ]]></institution>
<addr-line><![CDATA[Aveiro ]]></addr-line>
<country>Portugal</country>
</aff>
<pub-date pub-type="pub">
<day>30</day>
<month>12</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>30</day>
<month>12</month>
<year>2017</year>
</pub-date>
<volume>1</volume>
<numero>1</numero>
<fpage>38</fpage>
<lpage>49</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S2184-10042017000200038&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S2184-10042017000200038&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S2184-10042017000200038&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[RESUMO A presente investigação teve com objectivo principal estudar as relações entre exercício físico, autoconceito e o aproveitamento escolar em estudantes do segundo e terceiro ciclos de escolaridade com idades compreendidas entre os 12 e os 19 anos. Visa, ainda, constatar se os hábitos de exercício refletem as recomendações para a manutenção da saúde. A amostra foi constituída por 624 indivíduos (268 do sexo masculino, 354 do sexo feminino). Avaliou-se o autoconceito através do Self-Description Questionnaire II (SDQ-II) (Marsh, 1990; versão portuguesa de Gonçalves &amp; Vasconcelos-Raposo, 2001) e o aproveitamento escolar foi quantificado a partir do número de reprovações na escola. De uma forma geral conclui-se que existe uma relação positiva entre autoconceito e exercício físico e uma correlação também positiva entre o autoconceito e aproveitamento escolar.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The present research aims to study the relationship between physical exercise, self-concept, and academic achievement in students of the second and third cycles of schooling aged between 12 and 19 years. It also aims to see if the exercise habits reflect the recommendations for maintaining health. The sample consisted of 624 individuals (268 males, 354 females). Self-concept was assessed using the Self-Description Questionnaire II (SDQ-II) (Marsh, 1990; Portuguese version of Gonçalves &amp; Vasconcelos-Raposo, 2001), and school performance was quantified based on the number of failures at school. In general, it is concluded that there is a positive relationship between self-concept and physical exercise and a positive correlation between self-concept and academic achievement.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[atividade física]]></kwd>
<kwd lng="pt"><![CDATA[exercício físico]]></kwd>
<kwd lng="pt"><![CDATA[autoconceito]]></kwd>
<kwd lng="pt"><![CDATA[aproveitamento escolar]]></kwd>
<kwd lng="en"><![CDATA[physical activity]]></kwd>
<kwd lng="en"><![CDATA[physical exercise]]></kwd>
<kwd lng="en"><![CDATA[self-concept]]></kwd>
<kwd lng="en"><![CDATA[school performance]]></kwd>
</kwd-group>
</article-meta>
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