<?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>S2184-10042022000100003</article-id>
<article-id pub-id-type="doi">10.26580/pthj.art37-2022</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Comparação entre a determinação direta do VO2 máximo e a determinação indireta do VO2 máximo pelo dispositivo polar V800 de corredores recreacionais]]></article-title>
<article-title xml:lang="en"><![CDATA[Comparison between the direct determination of VO2 max and the indirect determination of VO2 max by the polar device V800 in recreational runners]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Silvino]]></surname>
<given-names><![CDATA[Valmir Oliveira]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ferreira]]></surname>
<given-names><![CDATA[Cirley Pinheiro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Prado]]></surname>
<given-names><![CDATA[Danilo Marcelo Leite do]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santos]]></surname>
<given-names><![CDATA[Marcos António Pereira dos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade Federal do Piauí  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidade de São Paulo  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>30</day>
<month>06</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>30</day>
<month>06</month>
<year>2022</year>
</pub-date>
<volume>5</volume>
<numero>2</numero>
<fpage>3</fpage>
<lpage>10</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S2184-10042022000100003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S2184-10042022000100003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S2184-10042022000100003&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[RESUMO A estimação do consumo máximo de oxigênio (VO2max) com o sistema ergoespirométrico, considerado padrão ouro, é de difícil acesso para a população. Portanto, testes indiretos são comumente utilizados. Este estudo comparou o VO2max determinado por um sistema ergoespirométrico com valores estimados pelo dispositivo Polar V800. 17 corredores recreacionais do sexo masculino (29.89 ± 6.84 anos) realizaram um teste cardiorrespiratório em uma esteira programável (modelo ATL, Inbramed, Brasil). Trocas gasosas e variáveis ventilatórias foram medidas respiração por respiração, utilizando um sistema analisador metabólico (Ergoestik Geratherm®, Alemanha). O VO2max foi indiretamente estimado com o Polar V800. A normalidade dos dados foi analisada com o teste de Shapiro-Wilk. O coeficiente de correlação intraclasse e o erro padrão das medidas (SEM) foram utilizados para verificar a confiabilidade. Foi aplicado o teste coeficiente de correlação de Pearson. A significância estatística foi estabelecida em p &lt; .05. O Polar V800 demonstrou baixos níveis de SEM (1.83 mL/kg/min). Houve uma correlação intraclasse moderada-forte entre as repetições para ambos os métodos (ICC = .69; p = .01), uma correlação moderada (r = .54; R 2 = .29; p = .02) e uma concordância excelente entre os métodos. O Polar V800 pode ser usado para aferir indiretamente o VO2max de corredores recreacionais.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The estimation of maximum oxygen consumption (VO2max) with the ergospirometric system, considered the gold standard, is not easily feasible for the general population. Therefore, indirect tests are commonly used. This study aimed to compare the VO2max determined by an ergospirometric system with values estimated by the Polar V800 device. 17 male recreational runners (29.89 ± 6.84 years) performed a cardiorespiratory test on a programmable treadmill (ATL model, Inbramed, Brazil). Gas exchange and ventilatory variables were measured breath by breath, using a metabolic analyzer system (Ergoestik Geratherm®, Germany). VO2max was indirectly estimated with the Polar V800. Data normality was analyzed using the Shapiro-Wilk test. The intraclass correlation coefficient and the standard error of measurements (SEM) were used to verify reliability. Pearson&#8217;s correlation coefficient test was applied. Statistical significance was established at p &lt; .05. Polar V800 demonstrated low levels of SEM (1.83 mL/kg/min). There was a moderate-strong intraclass correlation between repetitions for both methods (ICC = .69; p = .01), a moderate correlation (r = .54; R 2 = .29; p = .02), and excellent agreement between methods. The Polar V800 can be used to indirectly measure the VO2max in recreational runners.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[aptidão física]]></kwd>
<kwd lng="pt"><![CDATA[consumo de oxigênio]]></kwd>
<kwd lng="pt"><![CDATA[teste de exercício cardiopulmonar]]></kwd>
<kwd lng="en"><![CDATA[physical fitness]]></kwd>
<kwd lng="en"><![CDATA[oxygen consumption]]></kwd>
<kwd lng="en"><![CDATA[cardiopulmonary exercise test]]></kwd>
</kwd-group>
</article-meta>
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