<?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>1659-4436</journal-id>
<journal-title><![CDATA[Pensar en Movimiento: Revista de ciencias del ejercicio y la salud]]></journal-title>
<abbrev-journal-title><![CDATA[Pensar en Movimiento]]></abbrev-journal-title>
<issn>1659-4436</issn>
<publisher>
<publisher-name><![CDATA[Escuela de Educación Física de la Universidad de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1659-44362020000200067</article-id>
<article-id pub-id-type="doi">10.15517/pensarmov.v18i2.40268</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Atividade eletromiográfica da musculatura do quadríceps associado às diferentes posições do pé: um estudo piloto]]></article-title>
<article-title xml:lang="en"><![CDATA[Electromyographic activity of the quadriceps musculature associated with the different functions of the foot: a pilot study]]></article-title>
<article-title xml:lang="es"><![CDATA[Actividad electromiografíca de los músculos del cuádriceps asociada a las diferentes posiciones del pie: un estudio piloto]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Loures]]></surname>
<given-names><![CDATA[Poliana Lima Costa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santos]]></surname>
<given-names><![CDATA[Francielle Pereira]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Monteiro]]></surname>
<given-names><![CDATA[Luiz Gustavo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[Cintia Campolina Duarte Rocha da]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[Sandro Fernandes da]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Faculdade Presbiteriana Gammon  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brasil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidade Federal de Lavras  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brasil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<volume>18</volume>
<numero>2</numero>
<fpage>67</fpage>
<lpage>80</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S1659-44362020000200067&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S1659-44362020000200067&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S1659-44362020000200067&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo O fortalecimento do grupo muscular quadríceps femoral (QF) é muito importante devido sua função para o movimento. Mudanças na posição do pé, podem gerar alterações no recrutamento muscular, desta forma o presente estudo objetivou verificar se as variações nas posições dos pés, durante a extensão de joelhos, são eficazes para a seleção específica dos músculos reto femoral, vasto lateral e vasto medial, que compõem o QF. Onze mulheres universitárias (idade 22.36 ± 3.56 anos) participaram do estudo. Foi avaliada a ativação dos músculos através da eletromiografia de superfície, com configuração bipolar, em 3 séries de 10 repetições máximas (RM) de extensão de joelhos bilateral, em três posições dos pés: posição neutra, rotação interna e rotação externa. Os resultados não apontam diferenças significativas entre os músculos do QF superficial em todas as posições dos pés. Em conclusão, os resultados do presente estudo sugerem que as variações nos graus de rotação dos pés durante a extensão de joelhos, não são eficazes para a seleção específica dos músculos que compõem o QF.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Strengthening the femoral quadriceps (FQ) muscular group is very important due to its function in moving. The joint position may generate modifications in muscle recruitment. Consequently, the objective of this study was to verify if foot position variations during knee extension are efficient in the specific selection of the rectus femoris, vastus lateralis, and vastus medialis muscles comprising the FQ. Eleven female college students (ages 22.36 ± 3.56 years old) participated in the study. Muscle activation was evaluated through surface electromyography, with bipolar configuration, in 3 series of 10 maximum repetition (MR) of bilateral knee extension, in three foot positions: neutral position, internal rotation, and external rotation. Results do not indicate significant differences among the superficial FQ muscles in all foot positions. In conclusion, results suggest that variations in foot rotation degrees during knee extension are not efficient for the specific selection of the muscles comprising FQ.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El fortalecimiento de los músculos del cuádriceps femoral (CF) es importante debido a su función en el movimiento. La posición de la articulación puede generar cambios en el reclutamiento muscular. De esa forma el presente estudio tiene como objetivo verificar si variaciones en las posiciones del pie durante la extensión de las rodillas son eficaces para la selección específica de los músculos recto femoral, vasto lateral y vasto medial, que componen el CF. Once mujeres universitarias (edad 22.36 ± 3.56 años) participaron del estudio. Fue evaluada la activación de los músculos a través de la electromiografía de superficie, con una configuración bipolar, en 3 series de 10 repeticiones máximas (RM) de extensión bilateral de rodilla, en tres posiciones de los pies: neutra, rotación interna y rotación externa. Los resultados no presentaron diferencias significativas entre los músculos del CF en todas las posiciones del pie. En conclusión, los resultados del presente estudio sugieren que las variaciones en los grados de rotación de los pies durante la extensión de las rodillas no son eficaces para la selección específica de los músculos que componen el CF.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[avaliação eletromiográfica]]></kwd>
<kwd lng="pt"><![CDATA[extensores de joelho]]></kwd>
<kwd lng="pt"><![CDATA[posição dos pés]]></kwd>
<kwd lng="en"><![CDATA[electromyographic evaluation]]></kwd>
<kwd lng="en"><![CDATA[knee extensors]]></kwd>
<kwd lng="en"><![CDATA[foot variation]]></kwd>
<kwd lng="es"><![CDATA[evaluación electromiográfica]]></kwd>
<kwd lng="es"><![CDATA[extensores de la rodilla]]></kwd>
<kwd lng="es"><![CDATA[variaciones del pie]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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