<?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>S2184-10042018000200015</article-id>
<article-id pub-id-type="doi">10.26580/pthj.art10-2018</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Internet, Actividade Física, Depressão, Ansiedade e Stresse]]></article-title>
<article-title xml:lang="en"><![CDATA[Internet, Physical Activity, Depression, Anxiety and Stress]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cabral]]></surname>
<given-names><![CDATA[Flávia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pereira]]></surname>
<given-names><![CDATA[Mónica]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Teixeira]]></surname>
<given-names><![CDATA[Carla M.]]></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 Dept. Educação e Psicologia ]]></institution>
<addr-line><![CDATA[Vila Real ]]></addr-line>
<country>Portugal</country>
</aff>
<pub-date pub-type="pub">
<day>30</day>
<month>12</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>30</day>
<month>12</month>
<year>2018</year>
</pub-date>
<volume>2</volume>
<numero>1</numero>
<fpage>15</fpage>
<lpage>27</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S2184-10042018000200015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S2184-10042018000200015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S2184-10042018000200015&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[RESUMO O objetivo principal deste estudo consistiu em estudar a relação entre o uso da internet e a depressão, ansiedade e stresse, bem como a prática de atividade física. O estudo integrou uma amostra de 150 estudantes universitários, 25 do sexo masculino e 125 do sexo feminino, com idades compreendidas entre os 18 e os 30 anos. Relativamente aos instrumentos, foi administrado um questionário sociodemográfico e também foi avaliada a frequência de utilização da internet (dias por semana e horas por dia) e a frequência da prática da actividade física (AF). Utilizou -se também a versão portuguesa da Escala de Depressão, Ansiedade, e Stresse -21 e do Teste de Dependência de Internet de Young (IAT). Foram realizadas análises multivariadas para comparar o efeito do sexo, do meio de residencial, da frequência do uso da Internet (em dias e horas) e da prática ou não de AF sobre as variáveis dependentes (stress, ansiedade, depressão e dependência da internet - IAT), também foram realizadas análises de correlação de Pearson para examinar possíveis associações entre as referidas variáveis dependentes. Concluímos que existem efeitos significativos entre o sexo e a dependência da Internet e verificaram-se correlações positivas significativas entre stresse, ansiedade, depressão e dependência da Internet.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The main objective of this study was to examine the relationship between internet use, depression, anxiety, stress, and the practice of physical activity. The sample consisted of 150 college students, 25 males and 125 females between 18 and 30. The instruments used were a sociodemographic questionnaire including questions about the frequency of Internet use (days per week and hours per day) and physical activity practice. The Portuguese version of the Depression, Anxiety, and Stress-21Scale and the Young Internet Addiction Test (IAT) were also used. Multivariate analyses were carried out to compare the effect of gender, residence, frequency of Internet use (in days and hours), and physical activity practice. Dependent variables were Depression, Anxiety, and Stress, and internet dependence (IAT), Pearson&#8217;s correlation analyses were also performed to examine possible associations between the dependent variables. We concluded that there are significant effects between sexes and Internet Addiction, and significant positive correlations were found between stress, anxiety, depression, and Internet Addiction.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[Internet]]></kwd>
<kwd lng="pt"><![CDATA[actividade física]]></kwd>
<kwd lng="pt"><![CDATA[stresse]]></kwd>
<kwd lng="pt"><![CDATA[ansiedade]]></kwd>
<kwd lng="pt"><![CDATA[depressão]]></kwd>
<kwd lng="en"><![CDATA[Internet]]></kwd>
<kwd lng="en"><![CDATA[physical activity]]></kwd>
<kwd lng="en"><![CDATA[stress]]></kwd>
<kwd lng="en"><![CDATA[anxiety]]></kwd>
<kwd lng="en"><![CDATA[depression]]></kwd>
</kwd-group>
</article-meta>
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