<?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>S2184-10042020000100015</article-id>
<article-id pub-id-type="doi">10.26580/pthj.art22-2020</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Actividade físico-desportivas, autoconceito e aproveitamento escolar em adolescentes portugueses]]></article-title>
<article-title xml:lang="en"><![CDATA[Physical and sports activity, self-concept and school performance in portuguese adolescents]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Maciel]]></surname>
<given-names><![CDATA[Raquel Vila-Chã]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Costa]]></surname>
<given-names><![CDATA[Ana Marisa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Nunes]]></surname>
<given-names><![CDATA[Cláudia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodrigues]]></surname>
<given-names><![CDATA[Pedro Gavazzo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade de Trás-os-Montes e Alto Douro  ]]></institution>
<addr-line><![CDATA[Vila Real ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidade de Trás-os-Montes e Alto Douro  ]]></institution>
<addr-line><![CDATA[Vila Real ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidade de Trás-os-Montes e Alto Douro  ]]></institution>
<addr-line><![CDATA[Vila Real ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidade de Trás-os-Montes e Alto Douro  ]]></institution>
<addr-line><![CDATA[Vila Real ]]></addr-line>
<country>Portugal</country>
</aff>
<pub-date pub-type="pub">
<day>30</day>
<month>06</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>30</day>
<month>06</month>
<year>2020</year>
</pub-date>
<volume>3</volume>
<numero>2</numero>
<fpage>15</fpage>
<lpage>28</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S2184-10042020000100015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S2184-10042020000100015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S2184-10042020000100015&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 correlações da actividade físico-desportivas com o autoconceito e o aproveitamento escolar de estudantes do segundo e terceiro ciclos de escolaridade com idades compreendidas entre os 12 e os 19 anos, verificando igualmente se os hábitos de exercício reflectem as recomendações do American College of Sports Medicine/American Heart Association. A amostra consistiu de 622 indivíduos (268 do sexo masculino, 354 do sexo feminino e 2 que não se classificaram por sexo). Avaliou-se o autoconceito através do Self-Description Questionnaire II (SDQ-II) e para o efeito recorremos à versão portuguesa de Gonçalves e Vasconcelos-Raposo. O aproveitamento escolar foi avaliados a partir do número de reprovações na escola. De uma forma geral conclui-se que existe uma correlação positiva entre autoconceito e actividade físico-desportivas e uma correlação também negativa entre o autoconceito e aproveitamento escolar.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The purpose of this investigation was to study the relations between physical activity/sports, self-concept, and school performance, among youngsters between 12 and 19 years of age. Comparisons were made taking into account the recommendations made by American College of Sports Medicine/ American Heart Association for physical activity. The sample consisted of 624 individuals (268 males, 354 females, and two unclassified by sex). Self-concept was measured with the Self-Description Questionnaire II (SDQ-II) translated and validated for Portuguese by Gonçalves e Vasconcelos-Raposo. Academic achievement/ school performance was defined based on the number of times the individuals failed. The results showed that there are positive relationships between physical activity and several dimensions of the self-concept and negative correlations between the level of physical activity and academic achievement.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[actividade física]]></kwd>
<kwd lng="pt"><![CDATA[actividade físico-desportivas]]></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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